N10-009 Networking Concepts — All Questions With Answers

A network administrator is troubleshooting a connectivity issue and suspects the problem is related to the physical cabling. At which layer of the OSI model should the administrator begin their investigation?

Question 2easymultiple choice

A device is configured with IP address 192.168.1.130 and subnet mask 255.255.255.192. What is the network address of this device?

Question 3mediummultiple choice

A network technician is explaining the concept of encapsulation to a junior technician. At which OSI layer does a packet get encapsulated with a source and destination IP address?

Question 4hardmultiple choice

A network engineer is designing a new IPv6 addressing scheme. The company has been assigned a /48 prefix and needs to support up to 250 subnets. Which subnet size should be used to minimize waste while meeting the requirement?

Question 5easymultiple choice

Study the full ACL explanation →

A network technician is explaining the difference between a hub and a switch to a junior technician. Which statement correctly describes a key difference between these devices?

Question 6hardmultiple choice

A network engineer needs to connect two network segments that use different physical media: one segment uses copper Ethernet and the other uses fiber optic. The device must forward frames based on MAC addresses and must not perform any routing. Which device should the engineer choose?

Question 7easymultiple choice

A network engineer is troubleshooting a communication issue between two hosts. The engineer determines that the data is being segmented at the source and reassembled at the destination, but the segments are arriving out of order. Which OSI layer is responsible for sequencing the segments?

Question 8mediummultiple choice

A network technician is assigned a subnet mask of 255.255.255.248. How many usable host addresses are available in this subnet?

Question 9easymultiple choice

A network technician is explaining the OSI model to a junior technician. The technician mentions that the Transport layer is responsible for end-to-end communication and data segmentation. Which protocol operates at the Transport layer?

Question 10easymultiple choice

A network engineer is designing a subnet that can support at least 10 hosts. Which subnet mask would provide exactly 14 usable host addresses?

Question 11easymultiple choice

Which of the following protocols is used to automatically assign IP addresses to devices on a network?

Question 12mediummultiple choice

Which of the following is a characteristic of UDP when compared to TCP?

Question 13easymultiple choice

A network engineer needs to transfer a large database file from one server to another across a WAN link. The transfer must be reliable and guarantee that the data arrives without errors. Which transport layer protocol should the engineer use?

Question 14easymultiple choice

A network device receives a frame and forwards it based on the destination MAC address. The device does not modify the frame and only floods unknown unicast frames. At which layer of the OSI model does this device operate?

Question 15easymultiple choice

A network device receives a frame on one port and forwards it out to all other ports. The device does not examine the destination MAC address. Which type of device is being described?

Question 16mediummultiple choice

A network engineer needs to assign IP addresses to a new subnet that will support exactly 25 devices. Which subnet mask would provide the minimum number of usable host addresses while still accommodating the requirement?

Question 17mediummultiple choice

A network engineer is designing a network and needs to ensure that broadcast traffic is contained within a single broadcast domain. Which of the following devices should be used to create these separate broadcast domains?

Question 18mediummultiple choice

A network administrator wants to segment the network into multiple virtual LANs to reduce broadcast traffic. Which device is required to route traffic between these VLANs?

Question 19mediummultiple choice

Open the full BGP breakdown →

A company needs a subnet that will support exactly 50 devices. Which subnet mask provides the minimum number of usable host addresses while still accommodating the requirement?

Question 20hardmultiple choice

A network administrator is configuring BGP between two autonomous systems. Which BGP attribute is primarily used to influence inbound traffic to a particular AS?

Question 21easymultiple choice

A technician needs to connect two different networks and forward traffic based on IP addresses. Which of the following devices operates at Layer 3 of the OSI model and should be used?

Question 22easymultiple choice

A network administrator needs to create a subnet that supports exactly 50 hosts. Which subnet mask provides the smallest subnet that meets this requirement?

Question 23hardmultiple choice

A network engineer configures OSPF on two routers with a primary link (1 Gbps) and a backup link (100 Mbps). The engineer expects traffic to always use the primary link unless it fails, but the router is sending traffic over the backup link. What is the most likely cause?

Question 24hardmultiple choice

A network engineer is troubleshooting connectivity issues between two data center switches that are configured to support jumbo frames with an MTU of 9000. The link is a 10 Gigabit Ethernet fiber connection. Large file transfers fail, but small transfers succeed. What is the most likely cause?

Question 25easymultiple choice

Which of the following best describes the function of a default gateway?

Question 26easymultiple choice

A network switch is experiencing a high number of collisions on a specific port. The connected device is configured for half-duplex. Which of the following is the most likely cause?

Question 27mediummultiple choice

A router has two routes to the same destination network: one learned via OSPF with a metric of 10, and another learned via EIGRP with a composite metric of 3072. The default administrative distances are OSPF=110, EIGRP=90. Which route will be installed in the routing table?

Question 28easymultiple choice

A network engineer wants to segment a LAN into multiple broadcast domains without purchasing additional hardware. Which of the following technologies should be implemented?

Question 29easymultiple choice

A network administrator needs to ensure that data sent from a host arrives at the correct destination on a different network. Which of the following provides the logical address used for this purpose in IPv4?

Question 30mediummultiple choice

A network technician is configuring a small office network with two subnets: 10.0.1.0/24 and 10.0.2.0/24. Each subnet has its own switch, and both switches are connected to a router with interfaces 10.0.1.1 and 10.0.2.1. Hosts on subnet A can ping the router's interface in their subnet but cannot ping hosts on subnet B. Which of the following is the most likely cause?

Question 31easymultiple choice

Which of the following devices operates at Layer 3 of the OSI model and makes forwarding decisions based on destination IP addresses?

Question 32easymultiple choice

Which of the following is the primary function of a subnet mask in IPv4 networking?

Question 33easymultiple choice

Which of the following uniquely identifies a hardware network interface on a device?

Question 34easymultiple choice

At which layer of the OSI model does a network device encapsulate data into frames and add source and destination MAC addresses?

Question 35easymultiple choice

Which protocol is used to resolve a known IP address to a corresponding MAC address on a local network?

Question 36easymultiple choice

Which of the following is a characteristic of a Layer 2 network switch?

Question 37easymultiple choice

Which layer of the OSI model is responsible for logical addressing and routing of packets between networks?

Question 38easymultiple choice

Which of the following IP addresses is a private IP address as defined by RFC 1918?

Question 39mediummultiple choice

A network engineer is configuring IPv6 on a router interface. Which of the following is a valid global unicast IPv6 address?

Question 40easymultiple choice

In a network, a collision domain is a network segment where which of the following is true?

Question 41easymultiple choice

At which layer of the OSI model does a device provide flow control, error detection, and recovery for end-to-end communication?

Question 42easymultiple choice

Which of the following network protocols operates at the Transport layer of the OSI model and provides connection-oriented, reliable data delivery?

Question 43hardmultiple choice

An IPv6 address has the prefix 2001:db8::/32. Which of the following IP addresses belongs to the same prefix?

Question 44easymultiple choice

Which of the following describes a unicast transmission?

Question 45easymultiple choice

Which of the following IPv6 addresses is a valid link-local address?

Question 46easymultiple choice

Which of the following describes the purpose of a default gateway on a host in a TCP/IP network?

Question 47easymultiple choice

A network technician is explaining the function of a default gateway to a junior technician. Which of the following best describes the purpose of a default gateway?

Question 48mediummultiple choice

In the OSI model, which layer is responsible for establishing, managing, and terminating sessions between applications, as well as providing checkpoints and recovery?

Question 49easymultiple choice

A network administrator is configuring IP addresses for a new subnet. The network address is 192.168.1.0 with a subnet mask of 255.255.255.240. How many usable host addresses are available on this subnet?

Question 50easymultiple choice

A network technician is explaining the role of a network switch to a new employee. Which of the following best describes the primary function of a switch in a local area network?

Question 51mediummultiple choice

A network engineer is reviewing RFC 1918 address ranges to plan a private IP addressing scheme. Which of the following IP addresses falls within the private address space for Class A?

Question 52hardmultiple choice

An engineer is configuring a network and needs to understand the default behavior of an IPv6 node. When an IPv6 interface is initialized, which type of address is automatically assigned without any configuration server?

Question 53easymultiple choice

Which of the following best describes the primary function of a subnet mask in IPv4 networking?

Question 54easymultiple choice

Which of the following IPv6 addresses is a link-local address?

Question 55easymultiple choice

A network technician is reviewing the OSI model to understand how data is encapsulated when a web request is sent from a client to a server. At which layer does the web browser's HTTP request data get encapsulated with a TCP segment header?

Question 56mediummultiple choice

A network technician is explaining the difference between TCP and UDP to a junior technician. Which of the following correctly identifies a characteristic of TCP but NOT of UDP?

Question 57easymultiple choice

A network technician is explaining network segmentation to a junior technician. Which of the following devices increases the number of collision domains but does not increase the number of broadcast domains?

Question 58easymultiple choice

Read the full wireless explanation →

A network technician is explaining the process of resolving Layer 2 addresses to Layer 3 addresses on a local network. Which protocol is used by a host to determine the MAC address of another host given its IP address?

Question 59easymultiple choice

A network engineer is explaining to a manager why wireless networks often have lower throughput than wired Ethernet. Which of the following best describes the primary reason for this difference?

Question 60easymultiple choice

A network engineer needs to create subnets for four departments, each requiring at least 50 host addresses. The available network is 192.168.1.0/24. Which subnet mask should be used to satisfy the requirements while minimizing wasted addresses?

Question 61easymultiple choice

Which of the following best describes the primary function of the transport layer in the OSI model?

Question 62mediummultiple choice

A network engineer is designing a subnet to accommodate 50 devices in a single broadcast domain. The engineer uses a /26 subnet mask. How many usable host addresses are available?

Question 63easymultiple choice

A network technician is explaining the difference between connection-oriented and connectionless protocols to a junior technician. Which of the following protocols is connectionless at the transport layer?

Question 64mediummultiple choice

A network engineer is designing a network for a large organization. The engineer needs to ensure that broadcast traffic from one VLAN does not propagate to other VLANs while still allowing inter-VLAN communication. Which of the following devices is required to route between VLANs?

Question 65easymultiple choice

Which of the following best describes the purpose of the TCP three-way handshake?

Question 66easymultiple choice

Which of the following best describes the function of a default gateway on a host?

Question 67easymultiple choice

Which of the following best describes the primary difference between a hub and a switch?

Question 68easymultiple choice

At which layer of the OSI model does end-to-end communication and data segmentation occur?

Question 69easymultiple choice

At which layer of the OSI model does logical addressing (e.g., IP addresses) and routing occur?

Question 70easymultiple choice

Which of the following network devices operates at Layer 1 of the OSI model and forwards all incoming electrical signals to all of its ports?

Question 71easymultiple choice

A network administrator wants to automate IP address assignment for client devices. Which protocol should be used?

Question 72easymultiple choice

Which device is used to connect two different network segments and makes forwarding decisions based on IP addresses?

Question 73easymultiple choice

Read the full DHCP explanation →

Which transport layer protocol is used by VoIP and streaming video because it provides low latency and does not require retransmission?

Question 74easymultiple choice

A client obtains an IP address from a DHCP server but cannot resolve hostnames. The client can ping the default gateway and external IP addresses successfully. What is the most likely cause?

Question 75easymultiple choice

Which IPv6 address type is used for one-to-many communication and is similar to an IPv4 multicast address?

Question 76mediummultiple choice

A client and server are establishing a TCP connection. The client sends a SYN segment to the server. The server responds with a SYN-ACK segment. What is the next segment in the handshake?

Question 77easymultiple choice

Which of the following network devices operates primarily at Layer 2 of the OSI model and uses MAC addresses to forward data?

Question 78easymultiple choice

Which of the following network topologies connects each node to exactly two other nodes, forming a closed loop?

Question 79easymultiple choice

At which layer of the OSI model does a switch that uses MAC addresses to forward frames operate?

Question 80easymultiple choice

Which of the following is a characteristic of a connectionless protocol at the transport layer?

Question 81mediummultiple choice

Which IPv6 address is reserved for loopback?

Question 82easymultiple choice

Which of the following is a characteristic of a Layer 2 broadcast domain?

Question 83easymultiple choice

A network switch forwards frames based on which address?

Question 84easymultiple choice

Which of the following best describes a broadcast domain?

Question 85mediummultiple choice

A network administrator is designing a small office network with 40 workstations. The design must ensure that a single cable failure only affects the connected workstation. Which logical topology should the administrator implement?

Question 86easymultiple choice

At which OSI layer does a router primarily operate to make forwarding decisions based on IP addresses?

Question 87easymultiple choice

Which device operates at Layer 1 (Physical) of the OSI model and regenerates electrical signals to extend the distance of a network segment?

Question 88hardmultiple choice

A network administrator has configured a switch with four VLANs: VLAN 10, 20, 30, and 99 (native). The switch is connected to a router via an 802.1Q trunk link. The router has subinterfaces for VLANs 10, 20, and 30, each with an IP address. VLAN 99 is used for management and does not have a router subinterface. How many Layer 3 broadcast domains exist in this network?

Question 89easymultiple choice

A workstation with IP address 10.0.1.5/24 needs to communicate with a server at 10.0.2.10/24. The workstation's default gateway is configured as 10.0.1.1. Which of the following will the workstation do with the IP packets destined for the server?

Question 90easymultiple choice

A network administrator needs to connect 10 workstations in a way that each workstation's traffic does not collide with others. Which device should be used to connect these workstations?

Question 91easymultiple choice

Which of the following network topologies provides the highest level of redundancy and fault tolerance?

Question 92mediummultiple choice

Which of the following protocols is used to automatically assign IP addresses to devices on a network and also provides the subnet mask and default gateway?

Question 93easymultiple choice

A network switch that forwards frames based on MAC addresses operates at which layer of the OSI model?

Question 94hardmultiple choice

A network has a single switch with VLANs 10, 20, and 30 configured. The switch is connected to a router that has three subinterfaces, each in a different VLAN. How many broadcast domains are present?

Question 95mediummultiple choice

Which of the following is a characteristic of UDP?

Question 96easymultiple choice

A network administrator wants to logically segment a single physical switch into multiple separate broadcast domains without purchasing additional hardware. Which concept should be used?

Question 97easymultiple choice

At which layer of the OSI model does the conversion of data frames into electrical signals for transmission occur?

Question 98easymultiple choice

A junior network technician asks which device operates at Layer 2 of the OSI model and uses MAC addresses to forward frames. Which device is the technician describing?

Question 99easymultiple choice

Which network topology connects all devices to a central device?

Question 100mediummultiple choice

A network technician is analyzing a small office network topology. An 8-port switch has 7 workstations directly connected. The remaining switch port is connected to a 4-port hub, which has 4 workstations attached. All devices are configured on the same VLAN and IP subnet. How many collision domains and broadcast domains are present in this network?

Question 101mediumdrag order

Drag and drop the steps to configure a static route on a Cisco IOS router into the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps

Order

1Step 1

2Step 2

3Step 3

4Step 4

5Step 5

Question 102mediumdrag order

Drag and drop the steps to recover a lost router password on a Cisco device into the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps

Order

1Step 1

2Step 2

3Step 3

4Step 4

5Step 5

Question 103mediummatching

Match each network protocol to its well-known port number.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

443

3389

Question 104mediummatching

Match each network device to its primary function.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

Forwards packets between different networks based on IP addresses

Forwards frames within the same network based on MAC addresses

Filters traffic based on security rules

Connects wireless clients to a wired network

Question 1easymultiple choice

A network administrator is troubleshooting a connectivity issue and suspects the problem is related to the physical cabling. At which layer of the OSI model should the administrator begin their investigation?

Question 2easymultiple choice

A device is configured with IP address 192.168.1.130 and subnet mask 255.255.255.192. What is the network address of this device?

Question 3mediummultiple choice

A network technician is explaining the concept of encapsulation to a junior technician. At which OSI layer does a packet get encapsulated with a source and destination IP address?

Question 4hardmultiple choice

A network engineer is designing a new IPv6 addressing scheme. The company has been assigned a /48 prefix and needs to support up to 250 subnets. Which subnet size should be used to minimize waste while meeting the requirement?

Question 5easymultiple choice

Study the full ACL explanation →

A network technician is explaining the difference between a hub and a switch to a junior technician. Which statement correctly describes a key difference between these devices?

Question 6hardmultiple choice

A network engineer needs to connect two network segments that use different physical media: one segment uses copper Ethernet and the other uses fiber optic. The device must forward frames based on MAC addresses and must not perform any routing. Which device should the engineer choose?

Question 7easymultiple choice

A network engineer is troubleshooting a communication issue between two hosts. The engineer determines that the data is being segmented at the source and reassembled at the destination, but the segments are arriving out of order. Which OSI layer is responsible for sequencing the segments?

Question 8mediummultiple choice

A network technician is assigned a subnet mask of 255.255.255.248. How many usable host addresses are available in this subnet?

Question 9easymultiple choice

A network technician is explaining the OSI model to a junior technician. The technician mentions that the Transport layer is responsible for end-to-end communication and data segmentation. Which protocol operates at the Transport layer?

Question 10easymultiple choice

A network engineer is designing a subnet that can support at least 10 hosts. Which subnet mask would provide exactly 14 usable host addresses?

Question 11easymultiple choice

Which of the following protocols is used to automatically assign IP addresses to devices on a network?

Question 12mediummultiple choice

Which of the following is a characteristic of UDP when compared to TCP?

Question 13easymultiple choice

A network engineer needs to transfer a large database file from one server to another across a WAN link. The transfer must be reliable and guarantee that the data arrives without errors. Which transport layer protocol should the engineer use?

Question 14easymultiple choice

A network device receives a frame and forwards it based on the destination MAC address. The device does not modify the frame and only floods unknown unicast frames. At which layer of the OSI model does this device operate?

Question 15easymultiple choice

A network device receives a frame on one port and forwards it out to all other ports. The device does not examine the destination MAC address. Which type of device is being described?

Question 16mediummultiple choice

A network engineer needs to assign IP addresses to a new subnet that will support exactly 25 devices. Which subnet mask would provide the minimum number of usable host addresses while still accommodating the requirement?

Question 17mediummultiple choice

A network engineer is designing a network and needs to ensure that broadcast traffic is contained within a single broadcast domain. Which of the following devices should be used to create these separate broadcast domains?

Question 18mediummultiple choice

A network administrator wants to segment the network into multiple virtual LANs to reduce broadcast traffic. Which device is required to route traffic between these VLANs?

Question 19mediummultiple choice

Open the full BGP breakdown →

A company needs a subnet that will support exactly 50 devices. Which subnet mask provides the minimum number of usable host addresses while still accommodating the requirement?

Question 20hardmultiple choice

A network administrator is configuring BGP between two autonomous systems. Which BGP attribute is primarily used to influence inbound traffic to a particular AS?

Question 21easymultiple choice

A technician needs to connect two different networks and forward traffic based on IP addresses. Which of the following devices operates at Layer 3 of the OSI model and should be used?

Question 22easymultiple choice

A network administrator needs to create a subnet that supports exactly 50 hosts. Which subnet mask provides the smallest subnet that meets this requirement?

Question 23hardmultiple choice

A network engineer configures OSPF on two routers with a primary link (1 Gbps) and a backup link (100 Mbps). The engineer expects traffic to always use the primary link unless it fails, but the router is sending traffic over the backup link. What is the most likely cause?

Question 24hardmultiple choice

A network engineer is troubleshooting connectivity issues between two data center switches that are configured to support jumbo frames with an MTU of 9000. The link is a 10 Gigabit Ethernet fiber connection. Large file transfers fail, but small transfers succeed. What is the most likely cause?

Question 25easymultiple choice

Which of the following best describes the function of a default gateway?

Question 26easymultiple choice

A network switch is experiencing a high number of collisions on a specific port. The connected device is configured for half-duplex. Which of the following is the most likely cause?

Question 27mediummultiple choice

A router has two routes to the same destination network: one learned via OSPF with a metric of 10, and another learned via EIGRP with a composite metric of 3072. The default administrative distances are OSPF=110, EIGRP=90. Which route will be installed in the routing table?

Question 28easymultiple choice

A network engineer wants to segment a LAN into multiple broadcast domains without purchasing additional hardware. Which of the following technologies should be implemented?

Question 29easymultiple choice

A network administrator needs to ensure that data sent from a host arrives at the correct destination on a different network. Which of the following provides the logical address used for this purpose in IPv4?

Question 30mediummultiple choice

A network technician is configuring a small office network with two subnets: 10.0.1.0/24 and 10.0.2.0/24. Each subnet has its own switch, and both switches are connected to a router with interfaces 10.0.1.1 and 10.0.2.1. Hosts on subnet A can ping the router's interface in their subnet but cannot ping hosts on subnet B. Which of the following is the most likely cause?

Question 31easymultiple choice

Which of the following devices operates at Layer 3 of the OSI model and makes forwarding decisions based on destination IP addresses?

Question 32easymultiple choice

Which of the following is the primary function of a subnet mask in IPv4 networking?

Question 33easymultiple choice

Which of the following uniquely identifies a hardware network interface on a device?

Question 34easymultiple choice

At which layer of the OSI model does a network device encapsulate data into frames and add source and destination MAC addresses?

Question 35easymultiple choice

Which protocol is used to resolve a known IP address to a corresponding MAC address on a local network?

Question 36easymultiple choice

Which of the following is a characteristic of a Layer 2 network switch?

Question 37easymultiple choice

Which layer of the OSI model is responsible for logical addressing and routing of packets between networks?

Question 38easymultiple choice

Which of the following IP addresses is a private IP address as defined by RFC 1918?

Question 39mediummultiple choice

A network engineer is configuring IPv6 on a router interface. Which of the following is a valid global unicast IPv6 address?

Question 40easymultiple choice

In a network, a collision domain is a network segment where which of the following is true?

Question 41easymultiple choice

At which layer of the OSI model does a device provide flow control, error detection, and recovery for end-to-end communication?

Question 42easymultiple choice

Which of the following network protocols operates at the Transport layer of the OSI model and provides connection-oriented, reliable data delivery?

Question 43hardmultiple choice

An IPv6 address has the prefix 2001:db8::/32. Which of the following IP addresses belongs to the same prefix?

Question 44easymultiple choice

Which of the following describes a unicast transmission?

Question 45easymultiple choice

Which of the following IPv6 addresses is a valid link-local address?

Question 46easymultiple choice

Which of the following describes the purpose of a default gateway on a host in a TCP/IP network?

Question 47easymultiple choice

A network technician is explaining the function of a default gateway to a junior technician. Which of the following best describes the purpose of a default gateway?

Question 48mediummultiple choice

In the OSI model, which layer is responsible for establishing, managing, and terminating sessions between applications, as well as providing checkpoints and recovery?

Question 49easymultiple choice

A network administrator is configuring IP addresses for a new subnet. The network address is 192.168.1.0 with a subnet mask of 255.255.255.240. How many usable host addresses are available on this subnet?

Question 50easymultiple choice

A network technician is explaining the role of a network switch to a new employee. Which of the following best describes the primary function of a switch in a local area network?

Question 51mediummultiple choice

A network engineer is reviewing RFC 1918 address ranges to plan a private IP addressing scheme. Which of the following IP addresses falls within the private address space for Class A?

Question 52hardmultiple choice

An engineer is configuring a network and needs to understand the default behavior of an IPv6 node. When an IPv6 interface is initialized, which type of address is automatically assigned without any configuration server?

Question 53easymultiple choice

Which of the following best describes the primary function of a subnet mask in IPv4 networking?

Question 54easymultiple choice

Which of the following IPv6 addresses is a link-local address?

Question 55easymultiple choice

A network technician is reviewing the OSI model to understand how data is encapsulated when a web request is sent from a client to a server. At which layer does the web browser's HTTP request data get encapsulated with a TCP segment header?

Question 56mediummultiple choice

A network technician is explaining the difference between TCP and UDP to a junior technician. Which of the following correctly identifies a characteristic of TCP but NOT of UDP?

Question 57easymultiple choice

A network technician is explaining network segmentation to a junior technician. Which of the following devices increases the number of collision domains but does not increase the number of broadcast domains?

Question 58easymultiple choice

Read the full wireless explanation →

A network technician is explaining the process of resolving Layer 2 addresses to Layer 3 addresses on a local network. Which protocol is used by a host to determine the MAC address of another host given its IP address?

Question 59easymultiple choice

A network engineer is explaining to a manager why wireless networks often have lower throughput than wired Ethernet. Which of the following best describes the primary reason for this difference?

Question 60easymultiple choice

A network engineer needs to create subnets for four departments, each requiring at least 50 host addresses. The available network is 192.168.1.0/24. Which subnet mask should be used to satisfy the requirements while minimizing wasted addresses?

Question 61easymultiple choice

Which of the following best describes the primary function of the transport layer in the OSI model?

Question 62mediummultiple choice

A network engineer is designing a subnet to accommodate 50 devices in a single broadcast domain. The engineer uses a /26 subnet mask. How many usable host addresses are available?

Question 63easymultiple choice

A network technician is explaining the difference between connection-oriented and connectionless protocols to a junior technician. Which of the following protocols is connectionless at the transport layer?

Question 64mediummultiple choice

A network engineer is designing a network for a large organization. The engineer needs to ensure that broadcast traffic from one VLAN does not propagate to other VLANs while still allowing inter-VLAN communication. Which of the following devices is required to route between VLANs?

Question 65easymultiple choice

Which of the following best describes the purpose of the TCP three-way handshake?

Question 66easymultiple choice

Which of the following best describes the function of a default gateway on a host?

Question 67easymultiple choice

Which of the following best describes the primary difference between a hub and a switch?

Question 68easymultiple choice

At which layer of the OSI model does end-to-end communication and data segmentation occur?

Question 69easymultiple choice

At which layer of the OSI model does logical addressing (e.g., IP addresses) and routing occur?

Question 70easymultiple choice

Which of the following network devices operates at Layer 1 of the OSI model and forwards all incoming electrical signals to all of its ports?

Question 71easymultiple choice

A network administrator wants to automate IP address assignment for client devices. Which protocol should be used?

Question 72easymultiple choice

Which device is used to connect two different network segments and makes forwarding decisions based on IP addresses?

Question 73easymultiple choice

Read the full DHCP explanation →

Which transport layer protocol is used by VoIP and streaming video because it provides low latency and does not require retransmission?

Question 74easymultiple choice

A client obtains an IP address from a DHCP server but cannot resolve hostnames. The client can ping the default gateway and external IP addresses successfully. What is the most likely cause?

Question 75easymultiple choice

Which IPv6 address type is used for one-to-many communication and is similar to an IPv4 multicast address?

Question 76mediummultiple choice

A client and server are establishing a TCP connection. The client sends a SYN segment to the server. The server responds with a SYN-ACK segment. What is the next segment in the handshake?

Question 77easymultiple choice

Which of the following network devices operates primarily at Layer 2 of the OSI model and uses MAC addresses to forward data?

Question 78easymultiple choice

Which of the following network topologies connects each node to exactly two other nodes, forming a closed loop?

Question 79easymultiple choice

At which layer of the OSI model does a switch that uses MAC addresses to forward frames operate?

Question 80easymultiple choice

Which of the following is a characteristic of a connectionless protocol at the transport layer?

Question 81mediummultiple choice

Which IPv6 address is reserved for loopback?

Question 82easymultiple choice

Which of the following is a characteristic of a Layer 2 broadcast domain?

Question 83easymultiple choice

A network switch forwards frames based on which address?

Question 84easymultiple choice

Which of the following best describes a broadcast domain?

Question 85mediummultiple choice

A network administrator is designing a small office network with 40 workstations. The design must ensure that a single cable failure only affects the connected workstation. Which logical topology should the administrator implement?

Question 86easymultiple choice

At which OSI layer does a router primarily operate to make forwarding decisions based on IP addresses?

Question 87easymultiple choice

Which device operates at Layer 1 (Physical) of the OSI model and regenerates electrical signals to extend the distance of a network segment?

Question 88hardmultiple choice

A network administrator has configured a switch with four VLANs: VLAN 10, 20, 30, and 99 (native). The switch is connected to a router via an 802.1Q trunk link. The router has subinterfaces for VLANs 10, 20, and 30, each with an IP address. VLAN 99 is used for management and does not have a router subinterface. How many Layer 3 broadcast domains exist in this network?

Question 89easymultiple choice

A workstation with IP address 10.0.1.5/24 needs to communicate with a server at 10.0.2.10/24. The workstation's default gateway is configured as 10.0.1.1. Which of the following will the workstation do with the IP packets destined for the server?

Question 90easymultiple choice

A network administrator needs to connect 10 workstations in a way that each workstation's traffic does not collide with others. Which device should be used to connect these workstations?

Question 91easymultiple choice

Which of the following network topologies provides the highest level of redundancy and fault tolerance?

Question 92mediummultiple choice

Which of the following protocols is used to automatically assign IP addresses to devices on a network and also provides the subnet mask and default gateway?

Question 93easymultiple choice

A network switch that forwards frames based on MAC addresses operates at which layer of the OSI model?

Question 94hardmultiple choice

A network has a single switch with VLANs 10, 20, and 30 configured. The switch is connected to a router that has three subinterfaces, each in a different VLAN. How many broadcast domains are present?

Question 95mediummultiple choice

Which of the following is a characteristic of UDP?

Question 96easymultiple choice

A network administrator wants to logically segment a single physical switch into multiple separate broadcast domains without purchasing additional hardware. Which concept should be used?

Question 97easymultiple choice

At which layer of the OSI model does the conversion of data frames into electrical signals for transmission occur?

Question 98easymultiple choice

A junior network technician asks which device operates at Layer 2 of the OSI model and uses MAC addresses to forward frames. Which device is the technician describing?

Question 99easymultiple choice

Which network topology connects all devices to a central device?

Question 100mediummultiple choice

A network technician is analyzing a small office network topology. An 8-port switch has 7 workstations directly connected. The remaining switch port is connected to a 4-port hub, which has 4 workstations attached. All devices are configured on the same VLAN and IP subnet. How many collision domains and broadcast domains are present in this network?

Question 101mediumdrag order

Drag and drop the steps to configure a static route on a Cisco IOS router into the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps

Order

1Step 1

2Step 2

3Step 3

4Step 4

5Step 5

Question 102mediumdrag order

Drag and drop the steps to recover a lost router password on a Cisco device into the correct order.

Drag steps to the numbered slots on the right, or tap a step then tap a slot.

Steps

Order

1Step 1

2Step 2

3Step 3

4Step 4

5Step 5

Question 103mediummatching

Match each network protocol to its well-known port number.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts

Matches

443

3389

Question 104mediummatching