CompTIA JK0-016 Online Practice Questions and Exam Preparation

CompTIA JK0-016 Online Questions & Answers

• Question 461:

  Which of the following DNS records is used to identify a domain's SMTP server?

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

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  A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient's domain, and a preference value used to prioritize mail delivery if multiple mail servers are available. The set of MX records of a domain name specifies how email should be routed with the Simple Mail Transfer Protocol (SMTP).

• Question 462:

  A network has a large number of users who connect for short periods of time and the network needs to maximize the number of devices that can be configured using DHCP. Which of the following should be configured to solve this issue?

  A. Increase the number of reservations
  B. Increase exclude list
  C. Decrease lease times
  D. Decrease the scope
  C. Decrease lease times

• Question 463:

  An administrator notices SMTP traffic is being blocked by the company firewall. Which of the following ports should be opened?

  A. 25
  B. 53
  C. 110
  D. 443
  A. 25

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  SMTP is an Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks. SMTP uses TCP port 25.

• Question 464:

  An administrator is trying to retrieve management information from the network devices on their LAN. Which of the following monitoring resources provides the ability to collect this information encrypted over the network?

  A. SNMPv3
  B. VTP
  C. CDP
  D. IPSec
  A. SNMPv3

• Question 465:

  It has been suspected that one of the users is using the network inappropriately. As a preventive measure HR has authorized the IT department to enable port mirroring on the user's network port. Which of the following devices would be used to monitor the network activity?

  A. Port analyzer
  B. Multimeter
  C. Network sniffer
  D. Cable certifier
  C. Network sniffer

• Question 466:

  Which of the following can be used to decrypt SSL packets which encapsulate internal network addresses in the payload?

  A. Proxy server
  B. Content filter
  C. Load balancer
  D. VPN concentrator
  D. VPN concentrator

• Question 467:

  Which of the following defines an IP address that is NOT routed on the Internet?

  A. Multicast
  B. Public
  C. Private
  D. Classful
  C. Private

• Question 468:

  Which of the following protocols is used to detect and eliminate switching loops within a network?

  A. Spanning Tree Protocol
  B. EIGRP
  C. OSPF
  D. Dynamic routing
  A. Spanning Tree Protocol

• Question 469:

  Which of the following describes a manually entered route?

  A. Static
  B. Dynamic
  C. Multicast
  D. Unicast
  A. Static

• Question 470:

  Which of the following is a fiber connector that is slightly smaller than a standard copper network cable connector?

  A. BNC
  B. GBIC
  C. MT-RJ
  D. SC
  C. MT-RJ