CompTIA Network+ certification (JK0-023) Free Practice Test

Question 1

IP address based routing occurs on which of the following layers of the OSI model?

A. Layer 2

B. Layer 4

C. Layer 3

D. Layer 5

Correct Answer: C

Question 2

Which of the following cables covers the LONGEST distance?

A. 10GBaseT

B. 1000BaseX

C. 10GBaseFR

D. 100BaseTX

Correct Answer: C

Question 3

Joe, a network technician, needs to connect to a computer in a factory environment 250 meters (820 feet) from the IDF. Which of the following LAN technologies would be BEST to use?

A. 10GBaseT

B. MPLS

C. Coaxial

D. 100BaseFX

Correct Answer: D

Question 4

Which of the following describes a rationale for a network with redundant paths?

A. Unified communications implementation

B. VPN compatibility

C. High availability requirement

D. QoS

Correct Answer: C

Question 5

Tenants access multiple wireless networks in a building. Users report intermittent connectivity. Which of the following is the MOST likely cause of the problem?

A. The users have incompatible wireless network cards and should upgrade.

B. The default idle period for logoff is too short and should be changed to a longer limit.

C. The channels are overlapping with other wireless networks and should be changed.

D. The SSIDs are incompatible and should be renamed.

Correct Answer: C

Question 6

Which of the following tools would BEST be used to verify if a network cable is properly terminated?

A. Cable certifier

B. Cable stripper

C. Multimeter

D. Toner probe

Correct Answer: A

Question 7

Which wireless standard works at a MAXIMUM data rate of up to 11Mbps?

A. 802.11g

B. 802.11b

C. 802.1q

D. 802.11a

Correct Answer: B

Question 8

Which of the following network topologies has a central, single point of failure?

A. Ring

B. Star

C. Hybrid

D. Mesh

Correct Answer: B

Question 9

A desktop computer is connected to the network and receives an APIPA address but is unable to reach the VLAN gateway of 10.10.100.254. Other PCs in the VLAN subnet are able to reach the Internet. Which of the following is MOST likely the source of the problem?

A. 802.1q is not configured on the switch port

B. Bad SFP in the PC's 10/100 NIC

C. OS updates have not been installed

D. APIPA has been misconfigured on the VLAN

Correct Answer: A

Question 10

A technician needs to install software onto company laptops to protect local running services, from external threats. Which of the following should the technician install and configure on the laptops if the threat is network based?

A. A cloud-based antivirus system with a heuristic and signature based engine

B. A network based firewall which blocks all inbound communication

C. A host-based firewall which allows all outbound communication

D. A HIDS to inspect both inbound and outbound network communication

Correct Answer: C

Question 11

A network technician is configuring a new firewall for placement into an existing network infrastructure. The existing network is connected to the Internet by a broadband connection. Which of the following represents the BEST location for the new firewall?

A. The firewall should be placed in the Internet cloud.

B. The firewall should be placed between the Internet connection and the local network.

C. The firewall should be placed between the broadband connection and the Internet.

D. The firewall should be placed inside the local network.

Correct Answer: B

Question 12

A network technician has set up an FTP server for the company to distribute software updates for their products. Each vendor is provided with a unique username and password for security. Several vendors have discovered a virus in one of the security updates. The company tested all files before uploading them but retested the file and found the virus. Which of the following could the technician do for vendors to validate the proper security patch?

A. Require biometric authentication for patch updates

B. Implement a RADIUS authentication

C. Use TFTP for tested and secure downloads

D. Provide an MD5 hash for each file

Correct Answer: D

Question 13

A network administrator notices that all of the company switches are running at capacity on a given day, which is abnormal according to network baselines taken recently. Which tool would BEST allow the administrator to inspect what type of traffic is on the network?

A. Load balancing appliance

B. NIPS

C. Wire tap

D. Network sniffer

Correct Answer: D

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CompTIA Network+ certification (JK0-023) Free Practice Test