CompTIA JK0-023 Online Practice Questions and Exam Preparation

CompTIA JK0-023 Online Questions & Answers

• Question 921:

  A frewall that operates at Layer 7 of the OSI model is known as a(n):

  A. Circuit gateway.
  B. Packet flter.
  C. Applicaton level.
  D. Redundant frewall.
  C. Applicaton level.

• Question 922:

  Which of the following would Jeff a technicianf MOST likely use to remotely verify port confguraton of a switch?

  A. traceroute command
  B. SNMP monitor
  C. nbtstat command
  D. dig command
  B. SNMP monitor

• Question 923:

  In which of the following wireless standards is MIMO used?

  A. 802.11a
  B. 802.11b
  C. 802.11g
  D. 802.11n
  D. 802.11n

• Question 924:

  A user cannot access the LAN afer working successfully most of the day. Which of the following should the network administrator check FIRST?

  A. VLAN setngs
  B. History logs
  C. Patch cable
  D. Port security
  C. Patch cable

• Question 925:

  Which of the following types of connectors is used with a CAT6 Ethernet cable?

  A. RJ-45
  B. BNC
  C. RJ-11
  D. DB-9
  A. RJ-45

• Question 926:

  A company wants to only allow incoming HTTP and HTTPS trafc on their public wireless network. Which of the following port numbers should be the only allowed open ports on the frewall to accomplish this? (Select TWO).

  A. 20
  B. 80
  C. 143
  D. 443
  E. 8080
  B. 80
  D. 443

• Question 927:

  A customer wants to increase frewall security. Which of the following are common reasons for implementng port security on the frewall? (Select TWO).

  A. Preventng dictonary atacks on user passwords
  B. Reducing spam from outside email sources
  C. Shielding servers from atacks on internal services
  D. Blocking external probes for vulnerabilites
  E. Directng DNS queries to the primary server
  C. Shielding servers from atacks on internal services
  D. Blocking external probes for vulnerabilites

• Question 928:

  A technician testng an Ethernet card uses a cable wired with pins 1f2 to pins 3f6 on the same RJ-45 plug. Which of the following describes what the technician is using?

  A. RS-232
  B. Rollover cable
  C. Loopback
  D. Point to point cable
  C. Loopback

• Question 929:

  203.50.5.0 is an example of which of the following network classes?

  A. Class A
  B. Class B
  C. Class C
  D. Class D
  C. Class C

• Question 930:

  Jeff an administratorf is using a punch-down tool to connect a cable. To which of the following is Jef MOST likely connectng?

  A. A 110 block
  B. A demarc
  C. A DB-9
  D. A smart jack
  A. A 110 block