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CompTIA JK0-023 Exam Syllabus Topics:

CompTIA Network+ certification Sample Questions:

1. A technician is troubleshooting a client's connection to a wireless network. The client is asked to run a "getinfo" command to list information about the existing condition.
myClient$ wificard --getinfo agrCtlRSSI: -72 agrExtRSSI: 0 state: running op mode: station lastTxRate: 178 MaxRate: 300
802.11 auth: open link auth: wpa2-psk BSSID: 0F:33:AE:F1:02:0A SSID: CafeWireless Channel: 149,1
Given this output, which of the following has the technician learned about the wireless network? (Select TWO).

A) The WAP is using the 2.4GHz channel
B) The WAP is using 802.11a
C) The WAP is using AES encryption
D) The WAP is using RC4 encryption
E) The WAP is using 802.11g
F) The WAP is using the 5GHz channel

2. A technician has spent most of the day replacing a server running DHCP. Some of the users have begun to call the help desk stating that Internet connection stopped working even after rebooting. Upon investigation, the users' PCs with issues all have IP addresses that start with 169.254.x.x. The technician completes the replacement and powers on the new DHCP server. Which of the following is the BEST way to provide the PCs with issues a new IP address?

A) Inform each user to replace 169.254 with 192.168
B) Statically assign a legitimate IP address, and then set the PCs' NICs to DHCP
C) Run netstat on each PC and then reboot into safe mode
D) Wait five minutes until the PC resends a DHCP request

3. A company would like to use the enterprise RADIUS server to authenticate and identify their secure wireless users. Which of the following standards should the company use to facilitate this?

A) Open with EAP
B) WPA
C) WEP
D) Stateful inspection

4. A home user states during a basement remodel, one of the workers cut the network cable that goes from the modem to the WAP and nothing else has changed. According to the network troubleshooting methodology, which of the following is the NEXT step?

A) Establish a plan of action
B) Identify the problem
C) Question the user
D) Establish a theory of probable cause

5. A network administrator wishes to limit the number of potential wireless clients to 20 on a specific AP. Which of the following settings needs to be changed?

A) The DCHP lease time.
B) The network address translation IP range.
C) The signal strength of the router.
D) The number of allowable MAC addresses.

Solutions: