CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 461:

  A network administrator is adding 24 - 802.3af class 2 VoIP phones and needs to purchase a single PoE switch to power the phones. Which of the following is the MINIMUM PoE dedicated wattage the switch supports to power all of the phones at full power?

  A. 96W
  B. 168W
  C. 240W
  D. 369.6W
  B. 168W

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  The switch supports 168W to power all the phones at full power.

• Question 462:

  Which of the following is rated for speeds over 800Mbps?

  A. Coaxial
  B. DB-9
  C. CAT6
  D. CAT5e
  C. CAT6

• Question 463:

  Which of the following is a value that can be received from a DHCP server?

  A. Bootp server address
  B. SMTP server address
  C. WWW server address
  D. VPN server address
  A. Bootp server address

• Question 464:

  Which of the following cable types is employed to protect against interference in the physical environment or when security is a concern?

  A. STP
  B. RG-6
  C. Fiber
  D. RG-59
  C. Fiber

• Question 465:

  The technician is working on a DNS problem. Which of the following software tool is the technician MOST likely to use to troubleshoot this issue?

  A. nslookup
  B. ipconfig
  C. ping
  D. nbtstat
  A. nslookup

• Question 466:

  Which of the following would MOST likely be used by a network administrator to test DNS resolution?

  A. dig
  B. ipconfig
  C. netstat
  D. nbtstat
  A. dig

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  The command dig is a tool for querying DNS nameservers for information about host addresses, mail exchanges, nameservers, and related information. This tool can be used from any Linux (Unix) or Macintosh OS X operating system. The most typical use of dig is to simply query a single host.

• Question 467:

  An administrator would like to inspect all traffic flowing over the SMTP protocol on a given network. Which of the following tools would accomplish this? (Select TWO).

  A. Packet sniffer
  B. Honeypot
  C. Port mirroring
  D. IPS
  E. Port scanner
  F. IDS
  A. Packet sniffer
  C. Port mirroring

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  (IPS), also known as intrusion detection and prevention systems (IDPS), are network security appliances that monitor network and/or system activities for malicious activity. The main functions of intrusion prevention systems are to identify malicious activity, log information about this activity, attempt to block/stop it, and report it. And we use packet sniffer to detect the types of packet.

• Question 468:

  Which of the following commands displays the routing table on a server or workstation?

  A. nbtstat
  B. route
  C. traceroute
  D. nmap
  B. route

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  The route command allows you to make manual entries into the network routing tables. The route command distinguishes between routes to hosts ...

• Question 469:

  A technician has set up a wired network IP scheme with the following specifications:

  DHCP: 192.168.1.100-150

  Gateway: 192.168.1.1

  DNS: 192.168.1.1

  Which of the following is represented by this addressing scheme?

  A. Static
  B. QoS
  C. Dynamic
  D. Dynamic with static reservation
  C. Dynamic

• Question 470:

  Joe, a remote user, has called the helpdesk with an issue on his machine. The technician would like to remote into the machine for troubleshooting but does not know the IP address or host name. Which of the following commands can the technician ask Joe to execute to gain this information?

  A. netstat
  B. ipconfig
  C. ping
  D. traceroute
  B. ipconfig

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  As ipconfig command will give the information which is assigned to nic for communication so that technician will contact joe with his ip.