220-1101 Networking Tools Practice Test 2 — 15 Questions

Question 1

A company's IT department is deploying new VoIP phones. After connecting a phone to a PoE switch, the phone does not power on. The switch port is configured for PoE and shows no errors. Which tool should be used to verify that the Ethernet cable delivers power correctly?

Accepted Answer

Multimeter. A multimeter can measure voltage on the Ethernet cable's power pairs. Since the switch is configured for PoE and the cable appears intact, measuring voltage at the phone end can confirm whether power is reaching the device.

Answer

Cable tester

Answer

Tone generator

Answer

Wi-Fi analyzer

Question 2

A user reports that their new laptop can connect to the office Wi-Fi but cannot access any internet sites. Other devices on the same network work fine. Which tool should be used first to verify the laptop's IP configuration?

Accepted Answer

ipconfig. The ipconfig command displays the IP address, subnet mask, and default gateway assigned to a network adapter. Since the laptop connects to Wi-Fi but can't reach the internet, checking its IP configuration (e.g., whether it received a valid address via DHCP) is the logical first step.

Answer

Ping

Answer

Tracert

Answer

Netstat

Question 3

A network administrator is troubleshooting a slow connection between two buildings connected by a fiber optic link. The link is up but throughput is lower than expected. Which tool should be used to measure the exact signal loss in the fiber?

Accepted Answer

OTDR. An optical time-domain reflectometer (OTDR) sends light pulses into the fiber and measures backscatter to identify loss, splices, bends, and breaks. It provides a detailed profile of the fiber's condition, which is crucial for diagnosing throughput issues.

Answer

Multimeter

Answer

Tone generator

Answer

Wi-Fi analyzer

Question 4

A technician is deploying a new network in a warehouse and needs to measure the length of a spool of Cat6a cable before installation to ensure it does not exceed the 100-meter segment limit. Which tool should be used?

Accepted Answer

TDR (Time-Domain Reflectometer). A time-domain reflectometer (TDR) sends a pulse down the cable and measures the time it takes to reflect back, calculating the length accurately. This is essential for verifying cable runs stay within specification before installation.

Answer

Multimeter

Answer

Cable tester

Answer

Tone generator

Question 5

A technician is configuring a small office network and needs to assign a static IP address to a printer. The technician pings the intended IP address and gets no reply, but the printer still fails to communicate after configuration. Which tool should be used to verify that no other device on the network is using that IP address?

Accepted Answer

arp -a. The arp command shows the IP-to-MAC address mappings in the local ARP cache. If another device responded to a ping earlier, its MAC might be cached, or the technician can use arp -a to check for existing entries. However, a more reliable method is to use a network scanner or check the DHCP server logs. In this context, arp helps verify if the IP is already in use by checking the cache after a broadcast.

Answer

Ping -t

Answer

ipconfig /all

Answer

Netstat -r

Question 6

You are setting up a new branch office and need to run Ethernet cables through ceiling plenums. You must ensure the cables meet fire safety codes. Which type of cable should you use, and which tool would you use to verify its integrity after installation?

Accepted Answer

Use plenum-rated cable; verify with a cable tester. This question tests knowledge of plenum-rated cable and verification tools. Plenum-rated cable has fire-resistant insulation for use in air-handling spaces. A cable tester verifies the cable's integrity after installation.

Answer

Use PVC cable; verify with a multimeter

Answer

Use shielded cable; verify with a toner probe

Answer

Use fiber optic cable; verify with a loopback plug

Question 7

You are troubleshooting a network issue where a user cannot access a specific server. You need to verify the path that packets take from the user's computer to the server and identify where delays occur. Which command-line tool should you use?

Accepted Answer

tracert. This question tests knowledge of network diagnostic commands. Tracert (or traceroute) shows the route packets take and measures latency at each hop, helping to pinpoint where delays or failures occur.

Answer

ping

Answer

ipconfig

Answer

nslookup

Question 8

You are deploying a new VoIP phone and need to ensure the Ethernet cable from the wall jack to the phone is properly terminated and has no shorts. The cable appears to be wired correctly but you want to confirm. Which tool should you use?

Accepted Answer

Cable tester. This question tests understanding of cable verification tools. A cable tester checks for continuity, shorts, and proper wiring, making it essential for verifying Ethernet cable integrity before deploying a VoIP phone.

Answer

Toner probe

Answer

Loopback plug

Answer

Multimeter

Question 9

A user reports intermittent network drops. You suspect the issue might be with the network interface card (NIC) itself. You need to test the NIC's ability to send and receive data without connecting it to the network. Which tool should you use?

Accepted Answer

Loopback plug. This question tests knowledge of NIC testing tools. A loopback plug allows the NIC to send and receive its own signal, verifying its functionality without needing a live network connection.

Answer

Cable tester

Answer

Toner probe

Answer

Multimeter

Question 10

A customer complains that their Wi-Fi signal is weak in a specific conference room. You need to measure the signal strength and identify potential interference sources. Which tool is best suited for this task?

Accepted Answer

Wi-Fi analyzer. This question tests knowledge of wireless site survey tools. A Wi-Fi analyzer can measure signal strength, detect interference, and identify channel usage, making it ideal for diagnosing weak Wi-Fi in a specific area.

Answer

Spectrum analyzer

Answer

Cable tester

Answer

Multimeter

Question 11

A customer reports that their new laptop cannot connect to the company's Wi-Fi network, but other devices connect fine. You need to check if the laptop's wireless adapter is functioning properly and can see available networks. Which tool should you use?

Accepted Answer

Wi-Fi analyzer. This question tests understanding of wireless connectivity tools. A Wi-Fi analyzer can detect available networks and signal strength, helping to confirm if the adapter is working and seeing the network.

Answer

Cable tester

Answer

Loopback plug

Answer

Multimeter

Question 12

You are troubleshooting a network where users in one department cannot reach a critical server. You need to check if the server's IP address is reachable and measure the round-trip time. Which command-line tool provides this information?

Accepted Answer

ping. This question tests understanding of basic network diagnostic commands. Ping sends ICMP echo requests to a host and measures response time, confirming reachability and latency.

Answer

tracert

Answer

nslookup

Answer

netstat

Question 13

A user reports that their wired workstation cannot connect to the internet, but other devices on the same switch work fine. You need to verify the link status and speed of the workstation's network adapter. Which tool should you use?

Accepted Answer

Cable tester. This question tests knowledge of basic network troubleshooting tools. The cable tester is designed to verify physical connectivity and link status of Ethernet cables, making it the correct choice for checking the workstation's connection.

Answer

Multimeter

Answer

Toner probe

Answer

Loopback plug

Question 14

A user's workstation has intermittent connectivity issues. You suspect the Ethernet cable might be damaged or improperly terminated. You need to test the cable for continuity, shorts, and correct pinout. Which tool should you use, and what is a key feature of this tool?

Accepted Answer

Cable tester; it can detect split pairs. This question tests detailed knowledge of cable testers. A cable tester can check for continuity, shorts, and pinout configuration, often displaying results like 'pass' or 'fail' and identifying which pair is faulty.

Answer

Toner probe; it can measure signal strength

Answer

Multimeter; it can measure resistance

Answer

Loopback plug; it can simulate network traffic

Question 15

During a network upgrade, you need to identify which cable in a messy patch panel corresponds to a specific office wall jack. The cables are not labeled. Which tool should you use?

Accepted Answer

Toner probe. This question assesses understanding of cable identification tools. A toner probe emits a tone that can be traced along a cable, allowing you to locate the correct cable at the patch panel without disrupting service.

Answer

Cable tester

Answer

Multimeter

Answer

Loopback plug