CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 1021:

  Which of the following is a fber connector type?

  A. F-connector
  B. RJ-11
  C. RS-232
  D. MTRJ
  D. MTRJ

• Question 1022:

  At which of the following layers of the OSI model do packets exist?

  A. Network
  B. Session
  C. Data Link
  D. Transport
  A. Network

• Question 1023:

  Which of the following ports would Zachf a technicianf need to open on a frewall to allow SSH on the default port?

  A. 20
  B. 21
  C. 22
  D. 23
  C. 22

• Question 1024:

  Which of the following can be used to compromise a WPA encrypted wireless network when the rainbow table does not contain the key?

  A. Evil twin
  B. War chalking
  C. Bufer overfow
  D. Virus
  A. Evil twin

• Question 1025:

  The term virtual switch refers to which of the following?

  A. A switch that has not yet been implemented in the local network
  B. Migratng an entre environment to virtualiiaton
  C. A computer component that controls environmental elementsf such as lights and thermometers
  D. A logicalf rather than a physical switch device
  D. A logicalf rather than a physical switch device

• Question 1026:

  Which of the following provides RSA encrypton at the session layer?

  A. SSH
  B. ISAKMP
  C. SSL
  D. TLS
  C. SSL

• Question 1027:

  Zachf a network administratorf is checking work on some new CAT5 LAN network cabling installed at an organiiaton. Multple lines are receiving poor signalsf and Zach fnds the lengths of the runs to be sometmes over 350 feet (107 meters). Which of the following is the cause of the issue?

  A. CAT5 cable runs over 330 feet (100 meters) need to utliie STP instead of UTP.
  B. CAT5 cabling is limited to single-run lines of 330 feet (100 meters).
  C. CAT5 cabling is limited to single-run lines of 250 feet (76 meters).
  D. CAT5 cabling needs to have terminators installed at each end for runs over 330 feet (100 meters).
  B. CAT5 cabling is limited to single-run lines of 330 feet (100 meters).

• Question 1028:

  Which of the following can Joef a technicianf modify on an 802.11n router that is not available as an opton on an 802.11g device?

  A. SSID
  B. Encrypton
  C. Channels
  D. Spectrum
  D. Spectrum

• Question 1029:

  Which of the following could Karenf a network technicianf use to fnd the approximate locaton of a break in a long network cable?

  A. Protocol analyier
  B. Time domain refectometer
  C. Toner probe
  D. Multmeter
  B. Time domain refectometer

• Question 1030:

  Which of the following protocols is used by the ping command?

  A. SMTP
  B. ICMP
  C. TFTP
  D. ARP
  B. ICMP