CompTIA CompTIA Certifications JK0-023 Questions & Answers

• Question 931:

  Which of the following services do TCP connectons provide to applicaton layer protocols? (Select TWO).

  A. Transport services without error recovery

  B. Large data siie manageability using segmentaton

  C. Secure Kerberos password encrypton on data

  D. Delivery through error recovery

  E. Proxy server authentcaton

  Correct Answer: BD

• Question 932:

  Which of the following DNS record types provides the hostname to IP address mapping?

  A. A record

  B. NS record

  C. CNAME record

  D. MX record

  Correct Answer: A

• Question 933:

  Zachf a network administratorf wants to separate the network into broadcast domains. Which of the following can he use? (Select TWO).

  A. WAPs

  B. Routers

  C. Patch panels

  D. Hubs

  E. Bridges

  F. VLANs

  Correct Answer: BF

• Question 934:

  Lisaf an administratorf atempts to open a web page and sees the following error: `Error 404: Page not foundn. She then uses the ping command and fnds that the default gateway cannot be pinged. At which of the following layers does the problem MOST likely reside?

  A. Layer 1

  B. Layer 4

  C. Layer 5

  D. Layer 7

  Correct Answer: A

• Question 935:

  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

  Correct Answer: C

• Question 936:

  Which TCP/IP model layer does the OSI model layer named 'session' respond to?

  A. Applicaton

  B. Presentaton

  C. Internet

  D. Transport

  Correct Answer: A

• Question 937:

  Which of the following ports would have to be allowed through a frewall to allow SNMP trafc to pass on its default port? (Select TWO).

  A. 22

  B. 23

  C. 143

  D. 161

  E. 162

  F. 8080

  Correct Answer: DE

• Question 938:

  Lisaf a network technicianf is atemptng to map a FQDN to an internal server at the address of 10.0.0.15 without NAT/PAT. Which of the following is the reason this will ultmately not work?

  A. This is a private address which cannot be seen by external users.

  B. The address does not have the appropriate subnet mask assigned.

  C. This is a public address which can only be seen by internal users.

  D. This is a private address which can only be seen by external users.

  Correct Answer: A

• Question 939:

  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

  Correct Answer: C

• Question 940:

  Kimf a network technicianf is troubleshootng a problem and has just established a plan of acton to resolve the problem. Which of the following is the NEXT step in the troubleshootng methodology?

  A. Verify full system functonality and if applicable implement preventatve measures.

  B. Implement the soluton or escalate as necessary.

  C. Document fndingsf actonsf and outcomes.

  D. Establish a theory of probable cause (e.g. queston the obvious).

  Correct Answer: B