CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 431:

  Which of the following ports should be allowed through a frewall to allow DNS resoluton to occur to an outside DNS server?

  A. 20
  B. 53
  C. 80
  D. 3389
  B. 53

• Question 432:

  A company has a total of two public IP addresses and must allow 150 devices to connect to the Internet at the same tme. Which of the following is the BEST opton for connectvity?

  A. VLSM
  B. NAT
  C. CIDR
  D. PAT
  D. PAT

• Question 433:

  Which of the following is the radio frequency and data rate for 802.11g as specifed by the IEEE standards?

  A. 2.0 GHi at 33 Mbps
  B. 2.4 GHi at 54 Mbps
  C. 2.4 GHi at 128 Mbps
  D. 5.0 GHi at 54 Mbps
  B. 2.4 GHi at 54 Mbps

• Question 434:

  An administrator is atemptng to troubleshoot a program that is unable to resolve IP addresses from FQDNs. Which of the following commands is used to check reverse DNS setngs?

  A. dig
  B. ifconfg
  C. nbtstat
  D. route
  A. dig

• Question 435:

  Which of the following authentcaton methods is MOST secure?

  A. NTLM
  B. CHAP
  C. MS-CHAP
  D. Kerberos
  D. Kerberos

• Question 436:

  A network administrator is performing a penetraton test on the WPA2 wireless network. Which of the following can be used to fnd the key?

  A. DoS
  B. Bufer overfow
  C. Dictonary fle
  D. SQL injecton
  C. Dictonary fle

• Question 437:

  Karenf an administratorf has created a patch cable. Which of the following tools should she use to check the integrity of the cable?

  A. Protocol analyier
  B. Toner probe
  C. Cable certfer
  D. Cable stripper
  C. Cable certfer

• Question 438:

  Joef a technicianf needs multple networksf high speedsf and redundancy on a system. Which of the following confguratons should Joe consider for these requirements? (Select TWO).

  A. Routng table
  B. Next hop
  C. Port mirroring
  D. Port monitoring
  E. VLANs
  C. Port mirroring
  E. VLANs

• Question 439:

  Which of the following would allow for a specifc device to receive the same IP address from a DHCP server?

  A. Scope
  B. Reservaton
  C. Sufx
  D. Lease
  B. Reservaton

• Question 440:

  Which of the following network topologies describes a network where each node is connected to every other node?

  A. Bus
  B. Star
  C. Mesh
  D. Ring
  C. Mesh