CompTIA Network+ mcq questions with answer – Set 13

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#1. Which of the following is most likely the first step in a structured troubleshooting methodology?

Hypothesize the probable cause.

Hypothesize the probable cause.

Create an action plan.

Create an action plan.

Create a post-mortem report.

Create a post-mortem report.

Define the problem.

Define the problem.

#2. Which of the following comprise a simplified troubleshooting flow? (Choose three.)

Select all that apply:

Problem resolution

Problem resolution

Problem monitoring

Problem monitoring

Problem diagnosis

Problem diagnosis

Problem report

Problem report

#3. A broken copper strand in a circuit is known as which of the following?

Short

Short

Impedance

Impedance

Open

Open

Split pair

Split pair

#4. What Ethernet switch feature allows a port to automatically determine which of its leads are used for transmitting data and which of its leads are used for receiving data?

MDIX

MDIX

STP

STP

LAPD

LAPD

UTP

UTP

#5. In the absence of STP, what issues might result from a Layer 2 loop in a network? (Choose two.)

Select all that apply:

A router interface’s MTU decrementing

A router interface’s MTU decrementing

MAC address table corruption

MAC address table corruption

Broadcast storms

Broadcast storms

Packet fragmentation

Packet fragmentation

#6. If you successfully ping from host A to host B, what can you conclude about host A?

Its OSI Layers 1–4 are functional.

Its OSI Layers 1–4 are functional.

Its OSI Layers 1–3 are functional.

Its OSI Layers 1–3 are functional.

Its OSI Layers 1–7 are functional.

Its OSI Layers 1–7 are functional.

You can only conclude that ICMP traffic can reach host B.

You can only conclude that ICMP traffic can reach host B.

#7. A router that drops a packet exceeding a router interface’s MTU size, when that packet has its “don’t fragment” bit set, is called which of the following?

Route reflector

Route reflector

Null hop

Null hop

Zero-point router

Zero-point router

Black-hole router

Black-hole router

#8. To what subnet does a host with an IP address of 172.16.155.10/18 belong?

172.16.0.0 /18

172.16.0.0 /18

172.16.96.0 /18

172.16.96.0 /18

172.16.128.0 /18

172.16.128.0 /18

172.16.154.0 /18

172.16.154.0 /18

#9. Which of the following is a value measuring the power of a wireless signal?

RSSI

RSSI

SSID

SSID

RFI

RFI

CSMA/CA

CSMA/CA

#10. Which of the following are common sources of wireless network radio frequency interference (RFI)? (Choose three.)

Select all that apply:

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Game consoles

Game consoles

900-MHz cordless phones

900-MHz cordless phones

Microwave ovens

Microwave ovens

Baby monitors

Baby monitors

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