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CompTIA Network+ Certification Exam

 

QUESTION 271

A network technician has configured a point-to-point interface on a router, however, once the fiber optic cables have been run, the interface will not come up. The technician has cleaned the fiber connectors and used an optical power meter to confirm that light is passing in both directions without excessive loss. Which of the following is the MOST likely cause?

 

A.

Distance limitation

B.

Wavelength mismatch

C.

cross-talk

D.

EMI

E.

Macro bend

 

Correct Answer: B

 

 

QUESTION 272

Which of the following network infrastructure implementations would be used to connect two remote sales back to the main campus for all data and voice traffic?

 

A.

Crossover cable

B.

Multimode fiber

C.

Satellite

D.

MPLS

 

Correct Answer: B

Explanation:

https://en.wikipedia.org/wik
i/Multi-mode_optical_fiber

 

 

QUESTION 273

A new network administrator is hired to replace a consultant that has been keeping the network running for several months. After a month, the network administrator is having network issues. The problems are easily resolved and appear to be changes in the server settings. The log files on the servers do not contain any error or messages related to the issues. Which of the following is a possible cause of the issues?

 

A.

TACAS\Radius misconfiguration is causing logs to be erased

B.

ICMP ping of death is resetting DHCP and DNS on the server

C.

A backdoor has been installed to access the network

D.

The last ACL on the router is set to Deny All

 

Correct Answer: C

 

 

QUESTION 274

A company has decided to upgrade its legacy phone system to VoIP. The new phones will download the configurations from a TFTP server each time they boot up. Which of the following firewall ports must be opened to ensure the phones can communicate with the server?

 

A.

20

B.

53

C.

69

D.

161

 

Correct Answer: C

Explanation:

https://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol

 

 

QUESTION 275

A company is installing several APs for a new wireless system that requires users to authenticate to the domain. The network technician would like to authenticate to a central point. Which of the following would work BEST to achieve these results?

 

A.

A TACACS+ device and a RADIUS server

B.

A TACACS and a proxy server

C.

A RADIUSserver and an access point

D.

A RADIUS server and a network controller

 

Correct Answer: C

 

 

QUESTION 276

A network technician has been tasked to provide a local office with wireless Internet access. The network technician had determined the users will need a wireless router that provides a maximum of 54Mbps of bandwidth while operating in the 2.4Ghz band. Which of the following wireless standards will the network technician deploy?

 

A.

802.11a

B.

B.802.11b

C.

802.11g

D.

802.11n

 

Correct Answer: C

Explanation:

802.11g provides transmission over short distances at up to 54Mbps in the 2.4GHz bands.

 

 

 

 

 

 

 

QUESTION 277

DRAG DROP

You are tasked with creating a network that will accomplish the following requirements

 

Requirements:

1) The remote sales team must be able to connect to the corporate network

2) Each department must have ONLY two PCs and a server

3) Each department must be segmented from each other

4) The following VLANs have been designated:

 

a) VLAN 2- Finance

b) VLAN 12- Sales

c) VLAN 22- Human Resources (HR)

 

Complete the network by dragging the required objects into the diagram

 

INSTRUCTIONS:

Objects can be used multiple times and not all placeholders need to be filled.

 

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Correct Answer:

clip_image004

 

 

QUESTION 278

A network topology in which all nodes have point to point connections to all other nodes is known as which of the following?

 

A.

Mesh

B.

Ring

C.

Bus

D.

Star

 

Correct Answer: A

 

 

QUESTION 279

While implementing wireless access points into the network, one building is having connectivity issues due to light fixtures being replaced in the ceiling, while all other buildings’ connectivity is performing as expected. Which of the following should be exchanged on the access points installed in the building with connectivity issues?

 

A.

UTP patch cables

B.

Antenna

C.

Power adapter

D.

Security standard

 

Correct Answer: B

 

 

 

 

 

 

QUESTION 280

DRAG DROP

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Correct Answer:

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