A+ Core 1 Practice Test A

T568A

1. Green/White

2. Green

3. Orange/White

4. Blue

5. Blue/White

6. Orange

7. Brown/White

8. Brown

T568B

Switch green and orange

1. Orange/White

2. Orange

3. Green/White

4. Blue

5. Blue/White

6. Green

7. Brown/White

8. Brown

Troubleshoot: The laptop is on, but a connected external monitor is blank

Monitor input is incorrect

Troubleshoot: The LCD display output is fuzzy and isn't as crisp as other displays

Non-native resolution is configured

Troubleshoot: The colors on the screen look different than the actual printed colors

Disable time-of-day color shifting

Troubleshoot: The image on the screen is visible after the app is closed

Replace the display

Troubleshoot: The icons on the screen are very small

Increase the scaling percentage

Troubleshoot: An LCD monitor occasionally will turn completely black for three seconds

Replace the video data cable

Troubleshoot: An LCD projector turns off after less than 5 minutes of use

Clean dust from the air filters

What is the most common cause of Port Flapping?

Faulty crimp on an Ethernet connector

Port flapping describes a network interface which constantly transitions between connected and disconnected. This can sometimes be related to software or firmware, but is most likely associated with a hardware issue.

A user has powered on their computer and received the message “Operating system not found.” All SATA connectors are working, what next?

Check for removable drives

If the BIOS (Basic Input/Output System) is checking USB devices before the primary storage drive, the ________________ error could appear with some USB devices.

"Operating system not found"

To avoid this error you can either 1.) change the boot order in the BIOS, or 2.) check for removable drives and reconnect after OS has started.

What would be most likely found on an optical disc?

Document archive

A display issue associated with flickering and poor video quality would commonly point to __________________. You have to ____________.

1. The connection between the video adapter and the display device.

2. Replace the video cable

A system administrator hears an audible alarm when they walk in the door of the data center. What would be the most likely reason for this alarm?

A RAID array has failed

"scan to SMB"

Files are stored on a Microsoft share

A35. While configuring a new workstation in the lab, one of the engineers recommends using 255.255.255.0. What part of the configuration is this associated with?

Subnet Mask

A check of the SIM card shows a red label but no physical damage.

Liquid damage

A39. An administrator needs to obtain the MAC address of a print server. What would be the best source of this information?

NIC

A MAC (Media Access Control) address is commonly associated with a NIC (Network Interface Card). Each MAC address is a unique value and is burned-in to the ROM (Read Only Memory) of the NIC

A43. A system administrator is using a maintenance kit on a network-connected laser printer. Which of the following should be the last step when performing this maintenance?

Reset the page counter

The page counter is a helpful metric to determine how much the printer is used, which in turn determines when the next maintenance should be scheduled.

An application developer needs to test an application across all of the operating systems used by the company. The company would like to minimize any additional hardware purchases for this project.

Purchase a system that is configured just above the hardware requirements for the highest-end operating system. Create separate VMs for each operating system.

Minimal purchases and no need for technician to have extra hours during off-hours.

What can ECC RAM do?

Error correcting code (ECC) RAM (Random Access Memory) can identify and correct memory errors in real-time.

What technologies would maximize the data bandwidth when accessing memory modules?

Multiple channels

A motherboard supporting multi-channel memory can use multiple memory modules to increase overall throughput.

A DNS (Domain Name Service) server IP address set to the same IP address the local device is a bit unusual since ______________. You should _____________ if this happens.

1.) DNS servers are commonly separate devices.

2.) Check the DNS configuration

A DSL modem does not commonly include ____________. Mostly uses RJ11.

F-connector interfaces.

While examining the computer, the administrator can hear a series of clicks from the inside of the case. What should be the first step to address this issue?

Perform a full backup of the server.

Even if the issue is with the hard drive, the FIRST step you should do is a backup.