N10-009 Practice Test 24 — 15 Questions

Question 1

A network administrator needs to create a diagram that shows the IP addressing scheme, VLAN assignments, and routing protocols used in the network. This diagram will be used for troubleshooting and future planning. Which type of documentation should the administrator create?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Logical topology diagram. A logical topology diagram is correct because it documents the IP addressing scheme, VLAN assignments, and routing protocols—abstract elements that define how data flows through the network, independent of physical device locations. This type of diagram is essential for troubleshooting Layer 3 issues and planning changes to the network's logical design.

Answer

Physical topology diagram

Answer

Rack elevation diagram

Answer

Cable management plan

Question 2

Drag and drop the steps to troubleshoot a network connectivity issue using the OSI model into the correct order (top-down approach).

Accepted Answer

Check application layer, then transport layer, then network layer, then data link layer, then physical layer.. Top-down troubleshooting starts at the application layer and works down to physical.

Answer

Check physical layer, then data link layer, then network layer, then transport layer, then application layer.

Answer

Check application layer, then network layer, then transport layer, then data link layer, then physical layer.

Answer

Check application layer, then transport layer, then data link layer, then network layer, then physical layer.

Question 3

A company is deploying a wireless network in an office where employees move between floors. They want clients to authenticate once and maintain connectivity without re-authenticating when roaming between access points (APs). Which IEEE wireless standard provides this fast roaming capability?

Accepted Answer

802.11r. 802.11r, also known as Fast BSS Transition (FT), enables clients to roam between access points without re-authenticating at each new AP. It achieves this by using a cached Pairwise Master Key (PMK) and a four-way handshake that is optimized to reduce the time required for reassociation, typically completing in under 50 milliseconds. This ensures seamless connectivity for mobile users moving between floors.

Answer

802.11i

Answer

802.11e

Answer

802.11n

Question 4

A network administrator needs to upgrade the firmware on a core switch. According to change management best practices, which step should be performed first?

Accepted Answer

Submit a change request. According to change management best practices, the first step in any network change is to submit a change request (option C). This ensures the proposed firmware upgrade is reviewed, approved, and documented before any technical actions are taken, reducing the risk of unplanned outages and providing a rollback plan. Skipping this step violates ITIL/change management frameworks and can lead to unauthorized changes that impact network stability.

Answer

Download the new firmware

Answer

Create a backup of the current configuration

Answer

Schedule a maintenance window

Question 5

A network administrator needs to analyze bandwidth usage on a WAN link to determine which applications are generating the most traffic. The administrator requires detailed flow-level data including source/destination IP, ports, and protocol. Which technology should be used to collect this information?

Accepted Answer

NetFlow. NetFlow is the correct choice because it provides detailed flow-level data, including source and destination IP addresses, ports, and protocols, which is exactly what the administrator needs to analyze bandwidth usage per application on a WAN link. Unlike SNMP or Syslog, NetFlow captures per-flow metadata that allows identification of which applications are generating the most traffic.

Answer

SNMP

Answer

Syslog

Answer

ICMP

Question 6

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

Accepted Answer

Multicast. IPv6 multicast addresses (FF00::/8) are designed for one-to-many communication, where a single packet is delivered to multiple interfaces that have joined the multicast group. This directly parallels the behavior of IPv4 multicast addresses (224.0.0.0/4), making option A correct.

Answer

Anycast

Answer

Unicast

Answer

Broadcast

Question 7

A network administrator needs to document the network for auditing purposes. Which type of documentation provides the most detailed information about the physical connections between devices, including cable types and patch panel ports?

Accepted Answer

Wiring schematic. A wiring schematic provides the most detailed information about physical connections, including cable types, patch panel ports, and exact pin-to-pin wiring. This level of detail is essential for auditing physical infrastructure, as it documents the actual cabling plant rather than logical or high-level connectivity.

Answer

Logical diagram

Answer

Network topology map

Answer

Asset management database

Question 8

Drag and drop the steps to configure a VLAN on a managed switch into the correct order.

Accepted Answer

Access the switch and enter privileged EXEC mode, then enter global configuration mode, then create the VLAN, then assign interfaces to the VLAN.. VLAN creation involves entering config mode, creating the VLAN, and assigning ports.

Answer

Access the switch and enter privileged EXEC mode, then create the VLAN, then enter global configuration mode, then assign interfaces to the VLAN.

Answer

Enter global configuration mode, then access the switch and enter privileged EXEC mode, then create the VLAN, then assign interfaces to the VLAN.

Answer

Access the switch and enter privileged EXEC mode, then enter global configuration mode, then assign interfaces to the VLAN, then create the VLAN.

Question 9

A network administrator needs to ensure that all changes to network devices are properly reviewed, approved, and tracked. Which process should the administrator implement?

Accepted Answer

Change management. Change management is the formal process for requesting, reviewing, approving, implementing, and documenting changes to network devices. It ensures that all modifications are authorized, tracked, and have a rollback plan, which directly meets the requirement for review, approval, and tracking.

Answer

Incident management

Answer

Problem management

Answer

Asset management

Question 10

Drag and drop the steps for the TCP three-way handshake into the correct order.

Accepted Answer

Step 1: Send SYN, Step 2: Receive SYN-ACK, Step 3: Send ACK. The TCP three-way handshake is a fundamental process for establishing a connection. It begins with the client sending a SYN packet to the server. The server responds with a SYN-ACK packet, acknowledging the client's SYN and sending its own SYN. Finally, the client sends an ACK packet to acknowledge the server's SYN, completing the handshake. This sequence ensures both sides agree on initial sequence numbers and are ready to communicate.

Answer

Step 1: Send SYN, Step 2: Send ACK, Step 3: Receive SYN-ACK

Answer

Step 1: Send SYN-ACK, Step 2: Receive SYN, Step 3: Send ACK

Answer

Step 1: Send ACK, Step 2: Send SYN, Step 3: Receive SYN-ACK

Question 11

A network administrator needs to connect two switches that are 80 meters apart using UTP cabling and achieve 1 Gbps speed. The administrator has Cat5e and Cat6 cables available. Which standard should be used?

Accepted Answer

1000BASE-T. 1000BASE-T (IEEE 802.3ab) is the correct standard because it supports 1 Gbps over Cat5e or Cat6 UTP cabling at distances up to 100 meters. With 80 meters between switches, both cable types are well within the 100-meter reach, and 1000BASE-T is designed specifically for twisted-pair copper at this speed.

Answer

1000BASE-LX

Answer

10GBASE-T

Answer

100BASE-TX

Question 12

Drag and drop the steps for a disaster recovery procedure after a server failure into the correct order.

Accepted Answer

Assess damage, then rebuild server, then restore from backup, then apply patches, then test functionality. The correct disaster recovery order begins with assessing the damage to understand the scope of the failure. Next, rebuild the server (hardware/OS), then restore data from backup. After restoration, apply any necessary patches to bring the system up to date, and finally test functionality to confirm successful recovery. This sequence ensures data integrity and minimizes downtime.

Answer

Assess damage, then restore from backup, then rebuild server, then apply patches, then test functionality

Answer

Restore from backup, then rebuild server, then test functionality, then apply patches, then assess damage

Answer

Test functionality, then assess damage, then restore from backup, then apply patches, then rebuild server

Question 13

Match each network service to its description.

Accepted Answer

DHCP: Automatically assigns IP addresses to devices on a network.. Common network services have specific functions: DHCP assigns IP addresses, DNS resolves names, HTTP serves web content, SMTP handles email, FTP transfers files, and SNMP manages networks. The distractors confuse these roles.

Answer

FTP: Protocol for sending email.

Answer

SNMP: Resolves domain names to IP addresses.

Question 14

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

Accepted Answer

HTTP: 80. Common well-known ports: HTTP=80, HTTPS=443, FTP=21, SSH=22. The distractors swap these assignments.

Answer

HTTP: 443

Answer

FTP: 22

Question 15

A small office uses a wireless router that provides both wired and wireless connectivity. The router's LAN IP is 192.168.1.1. A new printer with a static IP of 192.168.1.50 cannot be reached from a laptop obtaining an IP via DHCP. The laptop's IP is 192.168.1.100. Which of the following is the most likely cause?

Accepted Answer

The subnet mask is incorrect. The laptop obtains an IP address via DHCP, which typically assigns a subnet mask of 255.255.255.0 for a /24 network. If the printer has a static IP of 192.168.1.50 but is configured with an incorrect subnet mask (e.g., 255.255.255.252), the printer may believe it is on a different subnet than the laptop (192.168.1.100). This prevents the laptop from reaching the printer because the printer will not respond to ARP requests or will send traffic to its default gateway instead of directly to the laptop.

Answer

The printer is on a different VLAN

Answer

The default gateway is misconfigured

Answer

The DHCP scope is exhausted