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CompTIA Network+ certification Sample Questions:

1. A technician is troubleshooting a wired device on the network. The technician notices that the link light on the NIC does not illuminate. After testing the device on a different RJ-45 port, the device connects successfully. Which of the following is causing this issue?

A) EMI
B) Cross-talk
C) RFI
D) Bad wiring

2. Users at a remote site are unable to establish a VPN to the main office. At which of the following layers of the OSI model does the problem MOST likely reside?

A) Physical
B) Session
C) Application
D) Presentation

3. When troubleshooting a connectivity issue, which of the following commands will give Joe, the technician, a list of the host names connected to the network?

A) msconfig
B) arp
C) ping
D) nbstat

4. A network engineer is dispatched to an employee office to troubleshoot an issue with the employee's laptop. The employee is unable to connect to local and remote resources. The network engineer flips the laptop's wireless switch on to resolve the issue. At which of the following layers of the OSI model was the issue resolved?

A) Layer 4
B) Layer 3
C) Layer 2
D) Layer 7
E) Layer 1

5. The phone company has provided a channelized T1 line. Which of the following should this line be connected to?

A) Switch
B) MDF
C) CSU/DSU
D) IDF

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