Network Fundamentals

An interface is configured with 10.24.7.158/27. What is the broadcast address of that subnet?

Which two statements accurately compare TCP and UDP? (Choose two.)

Which medium is the most common choice for a 10G uplink between wiring closets on different floors of the same building?

At which OSI layer do routers make forwarding decisions based on logical addressing?

Which command enables IPv6 routing on a Cisco router?

A host sends traffic to a web server on another subnet. Which address is used as the destination MAC address in the first Ethernet frame sent by the host?

A branch office needs four subnets from the 192.168.50.0/24 network, with each subnet supporting up to 50 hosts. Which prefix length should be used for each subnet?

A host sends an IPv4 packet larger than the outgoing interface MTU, and the DF bit is not set. What will a router normally do?

Which IPv6 address type is automatically created on an interface and used for communication on the local link only?

A switch port and a host NIC have a duplex mismatch. Which symptom is most likely?

Which rule does a router apply first when selecting a route for a destination packet?

Why does traceroute reveal each router hop along a path?

Which IPv6 protocol function replaces ARP?

What does a host rely on when using SLAAC to build an IPv6 address?

A branch LAN requires 50 usable IPv4 host addresses. Which prefix is the smallest that meets the requirement?

Which cable type is commonly used to connect a switch to a router when using standard Ethernet interfaces on modern devices with auto-MDIX support?

A host address is 2001:db8:100:20::25/64. Which portion identifies the network prefix?

Which IPv6 prefix is used for link-local addresses?

Which IPv6 address type is automatically created on an interface and used for local-link communication?

An IPv6 LAN is using SLAAC. Which message allows hosts to learn the default gateway and on-link prefix?

Which two statements about ARP on an IPv4 Ethernet network are correct? (Choose two.)

A switch displays the following output: Interface Status VLAN Gi1/0/5 connected 20 Gi1/0/6 notconnect 1 Gi1/0/24 trunk trunk Which interface is operating as an access port in VLAN 20?

Which OSI layer is responsible for end-to-end segmentation, port numbers, and reliability functions such as acknowledgments?

What is the primary purpose of encapsulation in networking?

A router interface is configured with 192.0.2.97/28. What is the network address of the subnet?

A host with IP address 172.16.50.130 and mask 255.255.255.192 needs to reach 172.16.50.190. Which statement is correct?

A company wants private IPv4 addressing that can be routed internally but not on the public Internet. Which range meets that requirement?

A network engineer must summarize the following routes before advertising them upstream: 172.16.32.0/24 172.16.33.0/24 172.16.34.0/24 172.16.35.0/24 Which summary route should be used?

A switch port was configured for sticky MAC learning. Which two statements accurately describe how the feature behaves?

A switch unexpectedly blocks a link toward the distribution layer. Based on the output, why did interface Gi1/0/24 become the root port instead of Gi1/0/23?

Match the data format to its most accurate characteristic.

Which statement best describes the purpose of an IPv6 link-local address?

Match the network management function to its primary purpose.

A port-channel between two switches is not forming correctly. Based on the output, what is the most likely cause?

Match the security feature to its main purpose.

Which two statements accurately describe UDP compared with TCP?

Which two statements accurately compare IPv4 private addresses and public addresses?

Which two statements accurately describe ARP in an IPv4 Ethernet network?

A host with address 192.168.1.130/26 needs to identify its local subnet. Which subnet does it belong to?

A subnet uses the mask 255.255.255.224. How many usable host addresses does it provide?

A host has the address 10.10.10.94/27. Which subnet contains that host?

Match each Ethernet or switching term to its most accurate description.

Match each IP service or protocol to its most accurate purpose.

A subnet must support 14 usable hosts. Which prefix is the smallest that meets the requirement?

A subnet must support at least 62 usable hosts. Which prefix is the smallest that meets the requirement?

Which two statements accurately describe IPv6 link-local addresses?

A subnet uses the prefix /29. How many usable host addresses are available in each subnet?

A host with address 172.16.5.10/23 wants to determine whether 172.16.6.20 is on the same local network. What is the correct conclusion?

Match each address-related concept to its most accurate meaning.

A host is configured as 192.168.100.65/26. What is the valid host range for its subnet?

A subnet requires 200 usable host addresses. Which prefix is the smallest that meets the requirement?

Which two statements accurately describe the role of a switch MAC address table?

A host with address 10.0.0.130/25 needs to identify its subnet. Which subnet is correct?

What is the usable host range for subnet 10.1.1.192/27?

Match each subnetting term to its most accurate meaning.

A host is assigned 192.168.10.33/28. Which subnet contains that host?

Match each common network device or concept to its primary role.

A host address is 172.16.8.70/26. What is the network address of its subnet?

A network requires at least 500 usable host addresses in one IPv4 subnet. Which prefix is the smallest that meets the requirement?

A subnet has the network address 192.168.20.128/26. What is the broadcast address?

A subnet uses the prefix /22. How many usable host addresses are available?

A host is configured as 192.168.50.130/25. Which address is the broadcast address for its subnet?

A host uses the subnet mask 255.255.254.0. Which prefix length does this represent?

Which two statements accurately describe a default gateway from a host perspective?

A host is configured with 10.10.10.130/25. What is the network address of its subnet?

Match each IPv4 addressing term to its most accurate meaning.

Which two statements accurately describe subnet masks in IPv4?

A host address is 192.168.1.14/29. Which address is the broadcast address for that host’s subnet?

A host is configured with 172.16.10.62/27. Which address is the broadcast address for that subnet?

A subnet must support 30 usable IPv4 host addresses. Which prefix is the smallest that meets the requirement?

Match each basic networking service to its most accurate role.

A host is configured as 10.10.20.190/26. Which range contains usable host addresses for that subnet?

What prefix length corresponds to the subnet mask 255.255.255.224?

Match each basic IPv4 concept to its most accurate role.

A host is configured as 10.20.30.95/27. Which address is the network address of its subnet?

A host uses address 192.168.5.126/25. Which address is the broadcast address for its subnet?

A host uses the subnet mask 255.255.255.192. How many usable host addresses exist in each subnet?

Which two statements accurately describe the role of a default gateway on an IPv4 host?

A host is configured with IP address 192.168.50.94/27. Which subnet contains that host?

A subnet has the network address 192.168.30.0/26. What is the broadcast address?

What prefix length corresponds to the subnet mask 255.255.255.248?

A host is configured with IP address 10.10.40.78/28. Which subnet contains that host?

A host is configured as 172.16.20.190/26. Which range contains the usable host addresses for that subnet?

Match each IPv4 concept to its most accurate role.

A host address is 192.168.22.145/28. Which subnet contains that host?

A host is configured with 10.10.10.33/27. What is the broadcast address of its subnet?

A subnet must support at least 62 usable IPv4 host addresses. Which prefix is the smallest that meets the requirement?

Match each common infrastructure service to its most accurate role.

A subnet must support at least 126 usable IPv4 host addresses. Which prefix is the smallest that meets the requirement?

Which prefix length corresponds to the subnet mask 255.255.255.192?

A host is configured with 192.168.60.33/26. Which address is the network address of its subnet?

A host is configured with 192.168.10.129/25. Which subnet contains that host?

A subnet uses network address 192.168.200.96/28. Which range contains the usable host addresses?

A host is configured with IP address 172.16.100.222/27. Which address is the broadcast address for its subnet?

Match each IPv4-related concept to its most accurate role.

Which two statements accurately compare SLAAC and DHCPv6?

Match each IPv6 address type or concept to its most accurate description.

Which statement best describes an IPv6 link-local address?

A router interface is configured with the prefix 2001:db8:acad:12::/64 and uses EUI-64 to build the interface ID. What is the main purpose of EUI-64 in this context?

Which statement best compares a MAC address and an IP address?

A host uses the subnet mask 255.255.255.240. How many usable host addresses exist in each subnet?

Which statement best describes a global unicast IPv6 address?

A host address is 10.10.10.14/29. Which address is the broadcast address for its subnet?

Match each IPv6 concept to its most accurate description.

A host is configured with IP address 192.168.70.18/30. Which addresses belong to the same subnet block?

A host uses subnet mask 255.255.255.224. How many total addresses exist in each subnet block?

An IPv6 host has a global unicast address and a correct default route learned from a router advertisement, but the next-hop entry shown on the host uses a link-local address rather than a global unicast address. What is the best explanation?

A subnet uses the mask 255.255.255.252. How many usable host addresses are available in each subnet?

An IPv6 host successfully reaches neighbors on its local segment, but it cannot reach remote IPv6 destinations. The host has a global unicast address and a correct prefix length. Which missing item is the strongest suspect?

A host is configured with 10.1.1.34/30. Which address is the broadcast address for its subnet?

Which statement best describes the relationship between a default gateway and a host’s subnet mask in IPv4?

A host address is 192.168.88.66/27. Which address is the network address of the subnet?

Which statement best describes the purpose of Neighbor Discovery in IPv6 at a CCNA level?

Which statement best describes why a subnet mask matters on an IPv4 host even when a default gateway is configured?

Which two statements accurately describe the relationship between a network address and a broadcast address in IPv4 subnetting?

A host address is 192.168.14.222/28. Which address is the broadcast address of its subnet?

Which statement best explains why a host with a correct IP address but incorrect subnet mask may still fail to communicate properly?

Based on the exhibit, why did SW2 become the root bridge for VLAN 10?

A host address is 192.168.50.158/27. Which address is the network address of its subnet?

Which statement best explains why link-local IPv6 addresses are still important even when global unicast addresses are configured?

A host address is 172.31.9.200/27. Which address is the first usable host in that subnet?

Which statement best describes the purpose of a default gateway on a host?

Which statement best describes why the subnet mask is necessary even when DNS and the default gateway are configured correctly?

Which statement best explains why a host may still fail even when the DNS server is correct, if the default gateway is wrong?

A host address is 10.100.12.94/26. Which address is the broadcast address for that subnet?

Based on the exhibit, which switch will become the root bridge for VLAN 30?

A host address is 192.168.90.33/28. Which address is the last usable host in the subnet?

A host address is 10.77.4.141/28. Which address is the network address of the subnet?

A host address is 10.55.8.117/29. Which address is the network address of the subnet?

A host address is 172.22.14.99/27. Which address is the broadcast address of the subnet?

Which statement correctly describes the purpose of ARP in an IPv4 network?

Match each protocol or service to its primary function.

What is the purpose of the default gateway on a host?

Which field in an IPv4 packet is primarily used to prevent packets from looping forever in the network?

Exhibit: A host has address 192.168.14.77/27. Which address is its valid default gateway if the first usable address in the subnet is chosen for the router interface?

Exhibit: A laptop has IP address 10.20.30.44/27. Which address is its directed broadcast for that subnet?

Exhibit: A host on VLAN 10 can ping the local SVI but not a server in VLAN 20. The Layer 3 switch has both VLAN interfaces up. What is the next item to verify first?

A support engineer is explaining why a host uses ARP before sending a frame on an Ethernet LAN. Which two statements are correct?

An engineer is reviewing transport protocols for a new application. Which two characteristics are associated with TCP rather than UDP?