In a newly installed LAN, the network administrator receives many calls about intermittent or slow connectivity to the authentication server. Which of the following could cause this problem? (Select TWO).
A. VLAN configuration error
B. Cables too short
C. Cable crosstalk
D. Incorrect channel
E. EMI
F. Wrong subnet mask
A network administrator needs to configure a port on the switch that will enable all packets on a particular switch to be monitored. Which of the following would BEST complete this objective?
A. Traffic shaping
B. MAC filtering
C. Port mirroring
D. VLAN trunking
Several users are reporting that they are unable to connect to the network. After further investigation, the network administrator notices that a newly configured Layer 2 device lost its configuration. Which of the following MOST likely caused the issue?
A. Wrong default gateway
B. Wrong DNS
C. Switching loop
D. Power failure
A technician is configuring a new DSL router. The technician can communicate with the LAN, but not the WAN. Which of the following is the MOST likely cause?
A. Duplicate IP addresses
B. Bad GBIC
C. Wrong gateway
D. Switching loop
Which of the following antenna types has a flat circular radiation pattern?
A. Diversity
B. Yagi
C. Omni
D. Patch
A new employee was given the following information to connect to the corporate wireless network for the first time:
SSID: CorporateWiFi
Encryption: WPA2
Password: SuperSecret!
The user enters the correct SSID and notices that encryption type or password are not required when configuring the laptop in the office, and the laptop successfully connects to the Internet. When the user brings the laptop to the conference
room, a pop-up asks for the CorporateWiFi password.
Which of the following is the MOST likely cause of this behavior?
A. The laptop wireless network card is incompatible with the conference room WAP.
B. The office walls prevent the employee from making a full connection.
C. A rogue access point was installed by a company employee.
D. MAC filtering is only enabled in the conference room.
During business hours, users at a small office are reporting that all of a sudden they are unable to reach any host on the Internet, but they can still use the network shares to transfer files within the office. Which of the following is the MOST likely cause of the outage?
A. Wrong gateway
B. Failed router
C. Bad switch module
D. Incorrect VLAN
A network administrator is configuring PXE boot to reimage a computer lab.
Which of the following must be configured on the existing DHCP server to specify the IP address of the imaging server from which the clients must boot?
A. Scope
B. Reservation
C. Option
D. Lease
A network administrator needs to deploy seven equally spaced WAPs along an underground tunnel. Which of the following is the BEST channel design to avoid interference?
A. 1, 3, 5, 7, 9, 11, 1
B. 1, 6, 11, 1, 1, 6, 11
C. 1, 11, 1, 11, 1, 11, 1
D. 11, 1, 6, 11, 1, 6, 11
A SOHO had their wireless network breached on several occasions. The user turned off the SSID and enabled WEP encryption, but breaches are still occurring. Which of the following will improve security and MOST likely prevent future breaches?
A. Turn down the signal strength
B. Replace the WAP and enable WEP
C. Change both the SSID and WEP key
D. Enable WPA2 encryption
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