CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 771:

  A computer has lost network connectvity. The network technician determines the network cable and the cable drop are both good. Which of the following would the technician use to test the computerns NIC?

  A. Cable certfer
  B. Throughput tester
  C. Loopback plug
  D. Multmeter
  C. Loopback plug

• Question 772:

  Annf a technicianf installs a wireless router in a network closet in a large ofce. She then confgures all workstatons in various ofces on that foor to use the wireless connecton. Maximum connecton speed at each workstaton is 54 Mbps. Some users complain that their network connecton is very slow. Which of the following is MOST likely the problem?

  A. Workstatons were confgured with the wrong connecton speed on the wireless adapter.
  B. Users with a slow connecton are too far away from the wireless router.
  C. Users that cannot connect are confgured on the wrong channel.
  D. Wireless network SSID is incorrect.
  B. Users with a slow connecton are too far away from the wireless router.

• Question 773:

  Which of the following DHCP optons is used to exclude IP addresses from being distributed to other computers?

  A. Reservatons
  B. Sufxes
  C. Leases
  D. Gateways
  A. Reservatons

• Question 774:

  Which of the following is the MOST secure way to prevent malicious changes to a frewall?

  A. SNMPv2 access only
  B. TELNET access only
  C. SSH access only
  D. Console access only
  D. Console access only

• Question 775:

  Which of the following cable types supports the FURTHEST distance when connectng various MDFs?

  A. Multmode
  B. UTP
  C. Singlemode
  D. CAT6
  C. Singlemode

• Question 776:

  Which of the following could be used to estmate RTT across a router?

  A. dig
  B. traceroute
  C. arp
  D. uptme
  B. traceroute

• Question 777:

  Which of the following utlites would Karenf a technicianf use to resolve the FQDN of a web server to its IP address?

  A. netstat
  B. route
  C. nslookup
  D. arp
  C. nslookup

• Question 778:

  Which of the following address blocks would MOST likely be blocked from crossing a border router?

  A. 8.0.0.0/8
  B. 172.16.0.0/12
  C. 122.0.0.0/24
  D. 248.0.0.0/8
  B. 172.16.0.0/12

• Question 779:

  In order to limit the number of dynamic addresses of hosts on a networkf which of the following can be implemented?

  A. Scope optons
  B. Leases
  C. Reservatons
  D. DNS sufxes
  A. Scope optons

• Question 780:

  Lisaf a userf reports increased delays and tmeouts when trying to reach several Internet sites. Which of the following would MOST likely be used when investgatng the problem at Lisans workstaton?

  A. nslookup
  B. route
  C. nbtstat
  D. arp
  A. nslookup