CompTIA exam questions
A user reports that their wireless connection is slow. The technician knows that the access point in use is an 802.11g. Which of the following could be the cause of the users issue? (Select TWO).
A. User is too far from an access point
B. User is experiencing interference from the refrigerator
C. Users PC is slow due to insufficient RAM
D. User is using an 802.11b card
E. Access point is not powered on
A user is reporting that they cannot connect to the wireless network from their office but they were able to connect yesterday. Which of the following would be the MOST likely reason?
A. Radio switch on laptop is enabled
B. Radio switch on laptop is disabled
C. Channel interference
D. User is too far away from the access point
After being relocated to an enclosed position under a desk, a computer experiences intermittent shutdowns. Which of the following conditions is MOST likely the cause?
A. Power surges
B. Overheating
C. APIPA addressing
D. RF interference
Which of the following media types is LEAST likely to be affected by electromagnetic interference?
A. Coaxial
B. Fiber
C. Wireless B
D. HSPA
Emily, a small business client, requests a secure SOHO wireless network setup. Emily wants to minimize interference as much as possible from the surrounding businesses yet needs the flexibility for her guests to access the network when authorized. Which of the following would be a feasible solution for Ann?
A. SSID broadcast off
B. No wireless password
C. Channel change
D. MAC filtering
Peter, a technician, is troubleshooting an issue with a PC suddenly losing network connectivity. He has confirmed that the cable is plugged in and has swapped it with a known working cable. Peter then pings the IP address of 127.0.0.1 and receives no response. Which of the following could be the cause of the issue? (Select TWO).
A. The computer has the wrong DNS server configured.
B. The TCP drivers are corrupted.
C. The cable has been unplugged from the patch panel.
D. The routing table on the router is corrupted.
E. There is RF interference on the cable.
F. The NIC is no longer functioning properly.
Which of the following cables is prone to electromagnetic interference?
A. STP
B. PVC
C. Plenum
D. UTP
ESD mats are useful for protecting against which of the following hazards?
A. Chemical burns
B. Electromagnetic interference
C. RF interference
D. Static buildup
Which of the following Internet connection types would be MOST susceptible to interference from weather? (Select TWO).
A. Dial-up
B. Line-of-sight
C. Satellite
D. Cable
E. DSL
Which of the following BEST describes the purpose of a TV tuner card?
A. Decrease the interference associated with the incoming signal
B. Increase the reception of nearby televisions
C. Convert the user’s Internet service into a television signal
D. Decode NTSC or PAL signals for the PC