CompTIA Network+ Question A-39

When a client calls and describes a problem with a computer not being able to reach the Internet, in which of the following places of the OSI model would a technician begin troubleshooting?

A. Transport layer
B. Physical layer
C. Network layer
D. Session layer

Correct Answer: B

Explanation:
The bottom layer of the OSI reference model is Layer 1, the physical layer.
The physical layer is the layer that defines the hardware elements of a network. These elements include:
Network Interface Cards Network topology Network cabling
The type of signals used for data transmissions
When troubleshooting a network connectivity issue, the first thing you would check is the computer’s network cabling, the network card etc. In other words, the computer’s physical connection to the network.

CompTIA A+ Core 2 Question J-73

A user, Jane, reports that her laptop will no longer connect to wireless. Peter, a technician, checks the device manager and does not see a wireless networking card or any unknown devices. Which of the following should Peter do FIRST?

A. Check to make sure the wireless card was not turned off via the hardware switch or keyboard shortcut.
B. Install a USB wireless card to ensure that Windows networking is working properly.
C. Open the laptop and reseat the network card and both antennas.
D. Download and install the latest wireless driver from the manufacturers website.

Correct Answer: A

Explanation:
If the wireless networking card is functioning properly, check the wireless switch on the laptop and see if the wireless is enabled within the operating system.

CompTIA A+ Core 2 Question J-50

A user states that they cannot connect to the network or the Internet. The technician determines the issue is that the computer has a static IP address and needs to use DHCP to work correctly. The technician sets the NIC to automatically assign an IP address. Which of the following should the technician perform NEXT?

A. Identify the type of network card and what Operating System the computer is running
B. Confirm the computer is back on the network and has Internet connectivity
C. They need to annotate what the static IP address was and inform the employees manager
D. They need to determine why the NIC was assigned a static IP address

CompTIA A+ Core 2 Question I-89

A technician needs to ping a client’s machine that the technician is working on, to ensure that the network card is functioning correctly. Which of the following IP addresses should be used?

A. 10.76.0.1
B. 127.0.0.1
C. 192.168.0.1
D. 255.255.255.0

Correct Answer: B

CompTIA A+ Core 2 Question G-37

A client has a computer that is infected with several viruses and spyware. Which of the following should the technician perform FIRST before spyware removal?

A. Run Windows Update
B. Disable system restore
C. Run the chkdsk /r command
D. Disable network cards

CompTIA A+ Core 2 Question E-76

A technician has finished replacing the network card in a laptop and has verified full system functionality. Which of the following troubleshooting steps should the technician take NEXT?

A. Document findings, actions, and outcomes
B. Escalate problem to a senior technician
C. Re-establish new theory of probable cause
D. Perform a full system backup

CompTIA A+ Core 2 Question E-6

A user calls the helpdesk and states that they suddenly cannot connect to the Internet or any other network resources. The user is on a company network that uses DHCP. The technician runs IPCONFIG from the command prompt and the PC has an IP address of 0.0.0.0. Which of the following steps should the technician perform FIRST to troubleshoot this issue?

A. Check the network cable
B. Replace network card
C. Assign a static IP address
D. Reinstall the network drivers

CompTIA A+ Core 2 Question D-87

A technician is tasked with upgrading a network card on a Windows 7 Professional PC. The technician installs the network card, loads Windows XP drivers that came with the network card, and reboots the PC. Upon rebooting, the computer blue screens and the technician cannot get the computer to boot up properly. Which of the following should the technician perform to resolve this issue without any data loss? (Select TWO).

A. Remove network drivers
B. Install Windows XP Service Pack 3
C. Reinstall Windows 7 Professional
D. Install Windows 7 Service Pack 1
E. Boot up in safe mode

Correct Answer: AE

Explanation:
The best way to solve this issue is to remove network drivers and restart the computer. Boot up in safe mode and reinstall the drivers.

CompTIA A+ Question J-56

The wires that run along the side of an LCD panel in the display of a laptop are used for which of the following functions?

A. Prevent EMI from nearby electronics
B. Install additional backlights for the display
C. Wireless network card antenna leads
D. Connections for memory card reader in the display

Correct Answer: C

CompTIA A+ Question H-97

Which of the following are the MOST important factors to address when a technician is choosing the components for a CAD workstation? (Select THREE).

A. Large drive space allocation
B. Powerful processor
C. Multiple network cards
D. Multiple large HD monitors
E. Powerful video card
F. Maximum RAM

Correct Answer: BEF

Explanation:
http://www.webopedia.com/TERM/C/CAD.html