[Free] 2018(Aug) Dumps4cert CompTIA JK0-023 Dumps with VCE and PDF Download 271-280

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2018 Aug CompTIA Official New Released JK0-023
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CompTIA Network certification

Question No: 271 – (Topic 3)

Lisa, a technician, is reporting wireless transmission speeds of 300Mbps. Which of the following wireless standards is being used?

A. 802.11a B. 802.11b C. 802.11g D. 802.11n

Answer: D

Question No: 272 – (Topic 3)

The location where the Telco wiring stops and the clients wiring starts is known as the:

  1. MDF.

  2. demarc.

  3. IDF.

  4. 66 block.

Answer: B

Question No: 273 – (Topic 3)

An administrator has added four switches to a campus network. The switch in wiring closet A is only connected to the switch in wiring closet C. The switch in wiring closet B is connected to the switch in wiring closet C as well as wiring closet D. The switch in wiring closet D is only connected to the switch in wiring closet B. Which of the following topologies is represented in this design?

  1. Ring

  2. Star

  3. Bus

  4. Mesh

Answer: C

Question No: 274 – (Topic 3)

A user’s new computer is not able to connect to the network at all. Upon further investigation, Karen, the administrator, finds that the wall jack is terminated with a 568B configuration. After locating the correct cable in the IDF, which of the following is the MOST likely cause of the problem?

  1. Other end of the cable is terminated with a 568B configuration

  2. Trunk port on the switch is disabled

  3. Other end of the cable is terminated with a 568A configuration

  4. Wall jack needs to be replaced with a smart jack

Answer: C

Question No: 275 – (Topic 3)

Which of the following connectors is used for coaxial copper cable?

  1. BNC

  2. DB-9

  3. RJ-11

  4. ST

Answer: A

Question No: 276 – (Topic 3)

A technician has been called about intermittent connectivity near IDF 2. Multiple cables were recently pulled through a common conduit. Which of the following is MOST likely the cause of the problem?

  1. Crosstalk

  2. Bad connectors

  3. Wrong DNS

  4. Duplicate IP address

Answer: A

Question No: 277 – (Topic 3)

Which of the following connector types will MOST likely be located on a serial cable?

  1. DB-9

  2. LC

  3. ST

  4. BNC

Answer: A

Question No: 278 – (Topic 3)

A technician notices a newly installed CAT5 cable is longer than the standard maximum length. Which of the following problems would this MOST likely cause?

  1. Split cable

  2. EMI

  3. DB loss

  4. Crosstalk

Answer: C

Question No: 279 – (Topic 3)

Which of the following wireless technologies only uses the 5GHz spectrum but reaches a theoretical throughput of only 54Mbps?

  1. A

  2. B

  3. G

  4. N

Answer: A

Question No: 280 – (Topic 3)

Which wireless standard works at a MAXIMUM data rate of up to 11Mbps?

A. 802.11a B. 802.11b C. 802.11g D. 802.1q

Answer: B

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