CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 881:

  Which of the following services are afected by closing the default ports of 80 and 21 via ACL on a company router?

  A. FTP and basic Internet trafc
  B. HTTPS and IMAP trafc
  C. DNS and TELNET trafc
  D. VPN and RDP trafc
  A. FTP and basic Internet trafc

• Question 882:

  A network technician is trying to terminate CAT5 modular jacks. Which of the following tools would be MOST appropriate for this scenario?

  A. Crimper
  B. OTDR
  C. Throughput tester
  D. Punch down tool
  D. Punch down tool

• Question 883:

  A technician is troubleshootng a computer that will not connect to the Internet. The PC is connected to the network. Which of the following tools should the technician use FIRST to understand the NIC confguraton?

  A. Protocol analyier
  B. ipconfg
  C. nslookup
  D. tracert
  B. ipconfg

• Question 884:

  MIMO technology in the 802.11n standard provides for which of the following benefts?

  A. Channel expansion
  B. Gigabit wireless bandwidth
  C. Multpath support
  D. Channel bonding
  C. Multpath support

• Question 885:

  Which of the following is the minimum subnet mask to allow 172.16.1.5 and 172.16.4.3 to be on the same subnet?

  A. /19
  B. /21
  C. /22
  D. /24
  B. /21

• Question 886:

  Which of the following is a Class A private IP address?

  A. 4.2.2.2
  B. 10.1.1.45
  C. 169.254.9.15
  D. 192.168.0.100
  B. 10.1.1.45

• Question 887:

  Which of the following performs posture assessments for unknown devices that connect to the network?

  A. PKI
  B. EAP
  C. NAC
  D. AAA
  C. NAC

• Question 888:

  Which of the following does SNMPv3 BEST provide over previous versions?

  A. Increased security
  B. Simplifed management
  C. More data types
  D. Higher productvity
  A. Increased security

• Question 889:

  A user is having trouble with their fax machine disconnectng during transmissions. The technician believes that a DSL signal may be on the same line as the fax. Which of the following tools would MOST likely help prove this hypothesis?

  A. Multmeter
  B. Cable tester
  C. Lineman's handset
  D. Toner probe
  C. Lineman's handset

• Question 890:

  Which of the following BEST describes the diference between layer 2 switching and layer 2 routng?

  A. Switching moves packets between hosts on diferent subnetsf and routng moves packets between hosts on the same subnet.
  B. Routng moves packets between hosts on diferent subnetsf and switching moves packets between hosts on the same subnet.
  C. Both routng and switching move packets between hosts on the same subnetf but routng does so at a faster pace.
  D. Both routng and switching move packets between hosts on diferent subnetsf but switching does so at a faster pace.
  B. Routng moves packets between hosts on diferent subnetsf and switching moves packets between hosts on the same subnet.