CompTIA Network+ certification v5.0 (JK0-023)

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Total 968 questions

Which of the following represents the physical address of a network access card?

  • A. FF01:D2:C4:87::11
  • B. 00-30-48-83-9B-C8
  • C. 08-9D-35-22-L2-34-FF-21
  • D. 2D1A:C3:0:1C3B:2AD:FF:FEBE:9D3A


Answer : B

Which of the following virtual components maintains a MAC-to-port forwarding table?

  • A. Virtual PBX
  • B. Virtual desktop
  • C. Virtual switch
  • D. Virtual server


Answer : C

Which of the following protocols uses port 3389 by default?

  • A. RDP
  • B. TFTP
  • C. IMAP
  • D. DNS


Answer : A

DHCP uses which of the following ports by default?

  • A. 21
  • B. 23
  • C. 68
  • D. 443


Answer : C

Jeff, a network technician, is concerned about the environmental effects of power consumption and heat from network resources. Limited space is also a concern. Which of the following technologies should be implemented?

  • A. Circuit switching
  • B. Network address translation
  • C. Power over Ethernet
  • D. Virtual servers


Answer : D

A company would like their technicians to be able to connect to employee desktops remotely via RDP. Which of the following default port numbers need to be opened on the firewall to support this?

  • A. 143
  • B. 443
  • C. 3389
  • D. 8080


Answer : C

Which of the following uses distance vector algorithms to determine the BEST network route to a destination address?

  • A. IS-IS
  • B. OSPF
  • C. BGP
  • D. RIP


Answer : D

A user is unable to open up websites on the Internet from a browser. The administrator determines that the workstation can ping its local gateway, but not the remote web server.
At which of the following layers of the OSI model does the problem MOST likely exist?

  • A. Data link
  • B. Network
  • C. Session
  • D. Physical


Answer : B

A home user states during a basement remodel, one of the workers cut the network cable that goes from the modem to the WAP and nothing else has changed. According to the network troubleshooting methodology, which of the following is the NEXT step?

  • A. Identify the problem
  • B. Question the user
  • C. Establish a plan of action
  • D. Establish a theory of probable cause


Answer : C

Which of the following DNS records would allow for a website to have more than one
FQDN?

  • A. TXT
  • B. PTR
  • C. MX
  • D. CNAME


Answer : D

Joe has a small office and is looking to replace his phone system with a lower cost solution that requires minimal in-house support. Which of the following is the BEST choice?

  • A. Wide Area Network
  • B. NAT
  • C. Virtual PBX
  • D. Virtual LAN


Answer : C

Creating a uniform user environment throughout the network can BEST be achieved by using which of the following?

  • A. Honeypots
  • B. Virtual switches
  • C. Virtual PBX
  • D. Virtual desktops


Answer : D

If a NIC does not have a link light, there is a failure at which of the following OSI layers?

  • A. Physical
  • B. Session
  • C. Data link
  • D. Presentation


Answer : A

Which of the following protocols is used to send time synchronization updates on a given network?

  • A. NTP
  • B. POP3
  • C. DNS
  • D. IMAP


Answer : A

Which of the following is the common port used for IMAP?

  • A. 25
  • B. 53
  • C. 143
  • D. 443


Answer : C

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Total 968 questions