Network Configuration Quiz

How does a switch determine which port to send a frame to?

• The switch looks up the destination MAC address in the CAM table. If found, it will send the frame out of all physical ports. If not found, it will send the frame out of the first physical port.

• The switch looks up the destination MAC address in the CAM table. If found, it will send the frame out of the corresponding physical port. If not found, it will send the frame out of all other physical ports

• The switch looks up the destination MAC address in the CAM table. If found, it will send the frame out of the first physical port. If not found, it will send the frame out of all physical ports.

• The switch looks up the destination MAC address in the CAM table. If found, it will send the frame out of the corresponding physical port. If not found, it will send the frame out of the first physical port.

A network technician is configuring VLANs on a new network. What is one performance benefit of this approach?

• Traffic on the network is encrypted

• Latency on the network is increased

• Physical security on the network is increased.

• Messages sent on the network may reach their destinations faster.

A technician has reviewed a network log and discovered a potential MAC spoofing attack. Which of the following attacker tactics did the technician most likely identify?

• The attacker masked their port with another port on the network.

• The attacker mimicked their MAC address with another device’s MAC address on the network.

• The attacker filled a switch’s MAC address table with fake entries.

• The attacker masked their IP address with another device’s IP address on the network.

A network administrator is tasked with securing a network’s switch. The following requirements must be met. Authorized devices are allowed to connect to the network via a physical port on the switch. Unauthorized device connections will be dropped if attempting to connect to the network via a physical port on the switch. Which of the following best explains how the switch’s port security should be configured?

• The physical ports on the switch should be configured to up to allow all authorized device network traffic.

• The physical ports on the switch should be configured to up but only allow a specific set of IP addresses.

• The physical ports on the switch should be configured to up but only allow a specific set of MAC addresses.

• The physical ports on the switch should be configured to up and only allow known device names.

A network engineer is configuring a server to support encrypted remote access on port 22. Which of the following protocols should the network engineer use to access a device on the remote server?

• RDP

• SSH

• SFTP

• Telnet

Which of the following best describes the purpose of the POP3 application layer protocol?

• Client retrieval of email messages from a mail server on default port 143.

• Client sending of email messages to a mail server on default port 110.

• Client sending of email messages to a mail server on default port 143.

• Client retrieval of email messages from a mail server on default port 110.

Review the following log file.

2024-10-24 14:43:10 INFO [SSH] Connection established from 192.168.1.10 to 192.168.1.20

2024-10-24 14:43:12 INFO [SSH] User 'gilbert' authenticated successfully

2024-10-24 14:43:14 INFO [SFTP] File upload initiated from 192.168.1.10 to 192.168.1.20:/home/gilbert/uploads 2024-10-24 14:43:16 INFO [SFTP] File 'report.pdf' uploaded successfully to /home/gilbert/uploads

Which of the following TCP/IP model layers are associated with the protocols in the log files?

• Application

• Transport

• Internet

• Network

A network engineer is responding to a concern regarding communication issues between Device 1 and Device 2. Device 1 is unable to communicate with Device 2 but can successfully communicate with all other devices on the network. The following outputs are the result of running ipconfig on the two devices.

Device 1

C:\Users\User1>ipconfig

Windows IP Configuration

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . : example.local

IPv4 Address. . . . . . . . . . . : 192.168.1.10

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 192.168.1.1

Device 2

C:\Users\User2>ipconfig

Windows IP Configuration

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . : example.local

IPv4 Address. . . . . . . . . . . : 192.168.1.11

Subnet Mask . . . . . . . . . . . : 255.255.0.0

Default Gateway . . . . . . . . . : 192.168.1.1

Based on the outputs, what configuration adjustment does the network technician need to perform to ensure Device 2 can communicate with all devices on the network?

• Configure the subnet mask of Device 1 to match the subnet mask of Device 2.

• Configure the subnet mask of Device 2 to match the subnet mask of Device 1.

• Configure the IP address of Device 2 to match the IP address of Device 1.

• Configure the IP address of Device 1 to match the IP address of Device 2.

A network technician is adding several end user’s devices to a LAN. The technician is concerned that adding these new devices may generate unexpected IP address conflicts or changes with existing devices on the network. These conflicts or changes could lead to existing devices not working properly, such as printers not being accessible on the network to perform print requests. Which of the following explains the most appropriate step, with the least amount of administrative maintenance, the network technician should take to ensure printers on the network provide consistent service to end users?

• Statically assign IP addresses only to network printers

• Dynamically assign IP addresses only to network printer

• Statically assign IP addresses to all non-printer devices on the network

• Dynamically assign IP addresses to all devices on the network

A network administrator is troubleshooting an issue on a LAN with multiple endpoints connected to a switch. The administrator uses the ping command to test the connectivity between the endpoints. The ping from one endpoint fails, while the ping from another endpoint on the same network succeeds. What can the network administrator infer based on the results of the ping command?

• The switch is malfunctioning and needs to be replaced.

• The endpoint with the failed ping is likely offline or has a network issue.

• The network is blocking all ICMP traffic.

• The endpoint with the successful ping is causing a network loop.