CompTIA CompTIA Certifications JK0-023 Questions & Answers

• Question 121:

  Which of the following confguratons of a wireless network would be considered MOST secure?

  A. WEP using MAC Filtering

  B. WEP and hiding the SSID

  C. WPA2

  D. WPA TKIP and hiding the SSID

  Correct Answer: C

• Question 122:

  Which of the following addresses is a class B private address?

  A. 132.216.14.184

  B. 152.119.25.213

  C. 162.17.43.22

  D. 172.23.226.34

  Correct Answer: D

• Question 123:

  A technician installs a wireless router on an existng network by connectng it directly to the frewall. By defaultf the main network is a Class A networkf while the wireless network is a Class C network. Afer the wireless router is installedf users connected to the wireless network report they are unable to connect to the Internet. Which of the following needs to be confgured to BEST resolve this issue?

  A. Confgure the main network to Class C

  B. Allow for duplicate IP addresses

  C. Allow the main network to handle DHCP

  D. Create a spanning tree to prevent switching loops

  Correct Answer: C

• Question 124:

  Which of the following frewall rules will block destnaton telnet trafc to any host with the source IP address 1.1.1.2/24?

  A. Deny any source host on source port 23 to destnaton any

  B. Deny any source network 1.1.1.0/24 to destnaton any on port 23

  C. Deny source host 1.1.12 on source port 23 to destnaton any

  D. Deny any source network 1.1.1.0/24 with source port 23 to destnaton any

  Correct Answer: B

• Question 125:

  A technician is installing an 802.11n network. The technician is using a laptop that can connect at a maximum speed of 11 Mbps. The technician has confgured the 802.11n network correctly but thinks it could be the type of WLAN card used on the laptop. Which of the following wireless standards is the WLAN card MOST likely using?

  A. 802.11a

  B. 802.11b

  C. 802.11g

  D. 802.11n

  Correct Answer: B

• Question 126:

  A new technician has been tasked with implementng a QoS policy for the Network. The technician decides it would be best to monitor the informaton traversing the network to gain statstcal informaton on ports and protocols utliied. Which of the following tools should the technician use to complete this objectve QUICKEST?

  A. Trafc analyier

  B. Network snifer

  C. SNMPv3

  D. System logs

  Correct Answer: A

• Question 127:

  Which of the following network topologies is ONLY possible between two users?

  A. Star

  B. Client-server

  C. Hybrid

  D. Peer-to-peer

  Correct Answer: D

• Question 128:

  Annf a new userf is unable to communicate on the network from her computer. A technician has verifed that the cables are functoning properly. Based on the informaton belowf which acton should the technician take to correct Annns problem? Computer_A Switch_A IP: 10.0.0.60 Int VLAN10 SM: 255.255.255.0 IP address 10.0.0.1/28 GW: 10.0.0.1 Speed 100 Duplex Full

  A. Change the duplex on the switch interface to half

  B. Change the speed on the switch interface to 10Mbps

  C. Change the subnet mask of the computer to 255.255.255.240

  D. Change the IP address of the computer to 10.0.0.12

  Correct Answer: D

• Question 129:

  A number of remote users have reported being unable to securely log on to the companyns network. Upon speaking with some of the employees experiencing the issuef no changes were made to their confguratonsf usernamesf or passwords. The technician establishes a theory that one of the VPN concentrators may be down. Which of the following should the technician do NEXT?

  A. Plan to reboot the concentrator as the potental soluton

  B. Escalate the problem to management

  C. Contnue to speak to usersf questoning if changes have been made

  D. Test access to the concentrator to confrm the status

  Correct Answer: D

• Question 130:

  A network administrator currently collects log fles from several diferent servers. Which of the following would allow the network administrator to collect log fles on a centraliied host?

  A. The network administrator should install and confgure a trafc analysis server.

  B. The network administrator should install and confgure a DMZ server.

  C. The network administrator should install and confgure a syslog server.

  D. The network administrator should install and confgure a network snifer.

  Correct Answer: C