A+ 1101 PM B 6-25

A server administrator has four identical drives to install into a database server. Which of these RAID types would provide both redundancy and the most available storage space?

• RAID 5

• RAID 10

• RAID 0

• RAID 1

Answer explanation

The Answer: A. RAID 5

With RAID 5, three drives would contain user data and the fourth drive would store parity information. This efficient use of space and the included redundancy make RAID 5 the best option.

The incorrect answers:

B. RAID 10

A RAID 10 array can be created with four drives, but two of those drives will be mirrored drives, effectively limiting the available storage space by 50 percent.

C.   RAID 0

RAID 0, or striping, does not provide any redundancy and would not meet the requirements in this question.

D.   RAID 1

RAID 1 is mirroring, and half of the available storage space would be dedicated to storing redundant data.

More information:

220-1101, Objective 3.3 - RAID https://professormesser.link/1101030302

A user is attempting to charge their iPhone, but the charging icon does not appear when connecting the charging cable. A working cable from another iPhone exhibits the same symptoms. Which of the following is the MOST likely reason for this issue?

• The screen is locked

• An iOS update is pending

• The iPhone has low signal

• The Lightning port is damaged

Answer explanation

The Answer: D. The Lightning port is damaged

A damaged Lightning interface would prevent the phone from charging, even while attempting to charge with different cables.

The incorrect answers:

A. The screen is locked

A locked screen would prevent access to the phone's apps or data, but it would not prevent the phone from charging.

B.  An iOS update is pending

It's important to stay up to date with the latest operating system version, but a pending update would not prevent the phone from charging.

C.  The iPhone has low signal

A low signal on the cellular or Wi-Fi network could cause issues with phone or data communication, but it would not stop the phone from charging the battery when connecting the Lightning cable.

More information:

220-1101, Objective 5.5 - Troubleshooting Mobile Devices https://professormesser.link/1101050501

A user in the marketing department needs an LCD with the best possible color representation. Which of the following would be the BEST choice for this requirement?

• TN

• CCFL

• IPS

• VA

Answer explanation

The Answer: C. IPS

An IPS (In Plane Switching) display provides excellent color representation and would be the best choice of the available options.

The incorrect answers:

A.  TN

The response times of a TN (Twisted Nematic) display are relatively fast, making it a good choice for gaming. However, TN displays tend to have poor viewing angles and suffer from color shifts when viewed at an angle.

B.  CCFL

Older displays use a CCFL (Cold Cathode Fluorescent Lamp) backlight on LCD (Liquid Crystal Display) monitors. This provides enough light to see the information on the display, but using a CCFL backlight does not directly affect the quality of the color on the screen.

D. VA

A VA (Vertical Alignment) display is a good compromise between TN and IPS displays, but it doesn't quite meet the color representation of an IPS display.

More information:

220-1101, Objective 1.2 - Laptop Displays https://professormesser.link/1101010201

A company is receiving an increase in malware delivered to random employees through email attachments. Which of the following would be the BEST way to protect users against this malicious software?

• Spam gateway

• DHCP services

• Syslog

• VLANs

Answer explanation

The Answer: A. Spam gateway

A spam gateway acts as a filter for unauthorized or unsolicited email messages. Most spam gateways can scan files for malicious software and filter those messages before delivery to the recipient.

The incorrect answers:

B.   DHCP services

DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP address settings. DHCP does not provide any filtering mechanism for malware or email messages.

C.  Syslog

Syslog is a standard for transferring log information from devices on the network. This is commonly used to transfer switch, router, firewall, and other log files to a central database.

D.  VLANs

VLANs (Virtual Local Area Networks) are used to create logical network segmentations by broadcast domains. This can allow the implementation of more specific security policies, but VLANs do not have any inherent filtering or malware identification features.

More information:

220-1101, Objective 2.4 - Network Services https://professormesser.link/1101020401

A user has reported their tablet is not able to retrieve or send mail, browse the Internet, or connect to video conferences. Apps on the device which do not require connectivity are working as expected. Which of these would be the MOST likely cause of this issue?

• Battery is very low

• The Wi-Fi network is out of range

• The touch screen needs calibration

• The tablet is overheated

Answer explanation

The Answer: B. The Wi-Fi network is out of range

A Wi-Fi network has limited range, and poor connectivity would result in communications issues, application faults, and other networking issues.

The incorrect answers:

A. Battery is very low

A low battery could cause the tablet to enter a power conservation mode, but network connections are usually available when these low power modes are used.

C.  The touch screen needs calibration

Some older mobile devices need to be constantly calibrated to maintain an accurate digitizer input. This issue is not related to the user interface or touch screen, so a calibration would not resolve this problem.

D.  The tablet is overheated

If a mobile device becomes overheated, the entire system will shut down until the internal temperature is lowered to a safe operational range. An overheating tablet would not disable independent features such as the network connection.

More information:

220-1101, Objective 5.5 - Troubleshooting Mobile Devices https://professormesser.link/1101050501

A PC technician has been asked to replace the LCD on a touch-screen laptop computer. Which of the following would be the MOST important component to test after this replacement?

• Digitizer

• Keyboard

• Audio controls

• System memory

Answer explanation

The Answer: A. Digitizer

A digitizer is built into the LCD display, and it would be the most likely component to have a problem after the entire display has been replaced.

The incorrect answers:

B.   Keyboard

Although the keyboard cables can be accidentally dislodged when working inside of a laptop computer, the display and keyboard are usually far enough apart that a keyboard problem would be uncommon.

C.   Audio controls

Many laptops include audio controls and buttons on the top of the laptop keyboard, but these controls are not usually replaced or modified when a display is replaced.

D.   System memory

The RAM of a computer is not commonly removed or reseated when working on the display, so you would not expect to see any issues with memory once the system is put back together.

More information:

220-1101, Objective 1.2 - Laptop Displays https://professormesser.link/1101010201

The computers in the shipping department are receiving the message "No connectivity" on their computers. The ipconfig output on one of the computers provides this information:

IPv4 Address: 192.168.1.22

Subnet Mask: 255.255.255.0

Default Gateway: 192.168.1.1

From this device, a technician is able to successfully ping 127.0.0.1 and 192.168.1.22.

The technician can also ping other devices in the shipping department but cannot receive a ping response from servers in the data cente or from the 192.168.1.1

Which of these would be the MOST likely cause of the issue?

• The DHCP server is down

• The wireless network is experiencing interference

• The local router is down

• The internet provider is experiencing an outage

Which of the following would be the BEST way to activate the screen of a smartphone without physically touching the display?

• Trackpad

• Port replicator

• Smart card reader

• Touch pen

Answer explanation

The Answer: D. Touch pen

A touch pen provides for interaction of a touch screen without physically pressing the display with a fingertip. Touch pens are often referenced as a touchscreen pen, touch screen stylus, or capacitive stylus.

The incorrect answers:

A. Trackpad

A trackpad is commonly used on laptops and tablets, but the size of a smartphone does not generally allow the use of a trackpad.

B. Port replicator

A port replicator is used by laptops to limit the amount of cable and power connections each time the laptop is moved. A port replicator would not be used with a smartphone.

C. Smart card reader

Smart card readers are usually integrated into a laptop or connected to a computer with a USB connection. Smart card readers are not commonly used with smartphones.

More information:

220-1101, Objective 1.3 - Mobile Device Accessories https://professormesser.link/1101010302

A graphics designer is working on a computer that powers itself off after about an hour of work. The computer tends to power down when working on complex designs that require extensive CPU utilization. Which of the following would be the MOST likely reason for this issue?

• The case fans are blocked

• The hard drive is failing

• The graphics software is corrupted

• A device driver is outdated

Answer explanation

The Answer: A. The case fans are blocked

Most motherboards are designed to power off automatically if the temperatures become excessive. If the case fans are blocked, the inside of the computer will not be able to efficiently cool the system. Eventually, the heat from the heavily-worked CPU will cause the system to power down.

The incorrect answers:

B. The hard drive is failing

A failing hard drive may appear to be working slower than normal, or file system errors may appear when working in an application. A bad hard drive will not commonly power off the computer.

C.   The graphics software is corrupted

Problems with software will display an error message on the screen or cause the application to suddenly disappear. An application problem will not commonly cause a computer to power down.

D.   A device driver is outdated

It can be important to keep device drivers updated, but an outdated driver will not commonly cause a system to power down. A problem with a device driver will cause an error message in the operating system or application.

More information:

220-1101, Objective 5.2 

Troubleshooting Common Hardware Problems https://professormesser.link/1101050201

Which of these services would be associated with a Windows file transfer?

• LDAP

• SMB

• IMAP

• SSH

Answer explanation

The Answer: B. SMB

SMB (Server Message Block) is the protocol used by Microsoft Windows for file sharing, printer sharing, and other Windows services. SMB commonly uses port 445 to provide direct SMB communication between Windows devices.

The incorrect answers:

A. LDAP

LDAP (Lightweight Directory Access Protocol) is a protocol used to access network directories, such as Microsoft's Active Directory database.

C.   IMAP

IMAP (Internet Message Access Protocol) is a popular email protocol used for retrieving message from an email server.

D.   SSH

SSH (Secure Shell) provides an encrypted terminal connection across the network. SSH is not commonly used to transfer files from one Windows device to another.

More information:

220-1101, Objective 2.1 - Common Network Ports

https://professormesser.link/1101020102