A+ 1101 PM C 6-27

A system administrator has been assigned the task of installing an operating system, application, and data onto a cloud-based server. Which of these best describes this scenario?

• Infrastructure as a Service

• Platform as a Service

• Hybrid Cloud

• Software as a Service

Answer explanation

The Answer: A. Infrastructure as a Service

IaaS (Infrastructure as a Service) provides the CPU, memory, storage,

and other infrastructure components necessary for the installation of an

operating system and application.

 

The incorrect answers:

B. Platform as a Service

PaaS (Platform as a Service) is a cloud deployment model that provides

a modular development platform. Users can create their own applications

based on the hosted modules available from a PaaS deployment.

C. Hybrid Cloud

The combination of both public and private cloud deployments results in

a hybrid model. This model allows organizations to provide both public

services to their customers and private services to use internally.

D. Software as a Service

Software as a Service is a cloud deployment model that provides on demand

software. The user is not responsible for hosting, development, or

ongoing management of a SaaS-based deployment.

More information:

220-1101, Objective 4.1 - Cloud Models

https://professormesser.link/1101040101

 

A network engineer is installing a device allowing wireless devices to access the wired Ethernet network. Which of the following would BEST describe this technology?

• Hub

• Managed switch

• VLAN

• Access point

Answer explanation

The Answer: D. Access point

An access point bridges the 802.11 wireless network with a wired

Ethernet network. Since the access point is acting as a bridge, it's making

forwarding decisions based on the destination MAC (Media Access

Control) address of the network frame.

 

The incorrect answers:

A. Hub

A hub is designed to connect many Ethernet devices together, but a hub

does not include any technology to directly access a wireless network.

B. Managed switch

A managed switch provides connectivity for wired Ethernet devices, and

some of the more advanced features of the managed switch allow for

additional network configurations and monitoring options. However, a

managed switch does not provide access to a wireless network.

C. VLAN

One of the features of a managed switch is the ability to assign interfaces

to VLANs (Virtual Local Area Networks). VLANs provide a way to

logically separate devices on the same physical switch, but they don't

provide any access to wireless networks.

More information:

220-1101, Objective 2.2 - Network Devices

https://professormesser.link/1101020201

A systems administrator has added a new video adapter to a desktop computer, installed the latest video driver, and rebooted the system. When the system starts, it shows a Windows Stop Error before it reaches the login prompt. Which of the following would be the BEST next troubleshooting step?

• Press F8 during startup and choose “Boot from last known working configuration”

• Upgrade the system BIOS using an update file from the motherboard manufacturer

• Disconnect all USB storage devices and restart the system

• Reinstall the operating system

Answer explanation

The Answer: A. Press F8 during startup and choose

“Boot from last known working configuration”

If a recent configuration causes a boot issue, Windows can restart the

operating system using the last known working configuration. Each time

Windows successfully boots, it makes a backup of that configuration. If

the startup option to "boot from last known working configuration" is

selected, that working backup is used instead of the current Windows

configuration. This can help resolve Windows Stop Error issues like those

detailed in this question.

 

The incorrect answers:

B. Upgrade the system BIOS using an update file from the

motherboard manufacturer

There's nothing in this question that would indicate that the BIOS is

causing any issues with the computer.

C. Disconnect all USB storage devices and restart the system

If Windows tries to boot from a USB storage device and a problem occurs,

an error message will be provided on the screen. The computer does not

continue to reboot when attempting to boot from a USB storage device.

D. Reinstall the operating system

Since the last change to the computer was the video driver upgrade, it

would be unnecessary to reinstall the entire operating system.

More information:

220-1101, Objective 5.2

Troubleshooting Common Hardware Problems

https://professormesser.link/1101050201

A system administrator is configuring a lab computer that will run five server VMs at the same time. Which of the following hardware resources will be the MOST important for this configuration?

• CPU

• Storage space

• Video adapter

• NIC

Answer explanation

The Answer: B. Storage space

Adding five virtual machines to a single device would require as much

storage space as five separate operating systems. Of the available options,

the system storage will be used the most.

The incorrect answers:

A. CPU

The CPU utilizations required by a server can vary, but five servers at low

utilizations would not be as much of a resource requirement as the storage

space for the VMs (Virtual Machines).

C. Video adapter

Servers don't often require extensive video resources, and some servers

don't even use a graphical interface. Given what we know in this

question, the video adapter resources are not going to be a large resource

requirement.

D. NIC

The NIC (Network Interface Card) provides the network connectivity for

the virtual machines. Multiple VMs can use the same physical NIC, so

most environments won't need any additional physical network interfaces.

More information:

220-1101, Objective 4.2 - Client-side Virtualization

https://professormesser.link/1101040201

 

 

A user's smartphone contains both personal and corporate data. When the user attempts to install a new app, the installation is halted and an error message appears. Which of the following would be the MOST likely reason for this issue?

• NFC

• Bluetooth

• MDM

• GPS

Answer explanation

The Answer: C. MDM

MDM (Mobile Device Management) provides centralized management

for mobile devices. An MDM can be used to set policies on app use, data

storage, camera use, and almost any other feature on the smartphone.

 

The incorrect answers:

A. NFC

NFC (Near Field Communication) is designed to send small amounts of

data over a short distance. NFC is commonly used in smart phones and

smart watches as a method of payment at a credit card terminal.

B. Bluetooth

Bluetooth is a useful high speed network to use over a relatively short

distance, such as a single room. Bluetooth is not commonly used as a

method of device management.

D. GPS

A smartphone using GPS (Global Positioning System) can provide

location information, but the GPS results aren't associated with app

installation unless the manager of the MDM creates a specific policy

linking the two.

More information:

220-1101, Objective 1.4 - Mobile Device Connectivity

https://professormesser.link/1101010402

 

Which of the following would provide segmentation of broadcast domains on the same physical switch?

• VLAN

• DNS

• VPN

• DHCP

Answer explanation

The Answer: A. VLAN

A VLAN (Virtual Local Area Network) is used to segment interfaces

on a single switch or across multiple switches. This allows a network

administrator to separate networks on a single switch instead of installing

multiple physical switches.

 

The incorrect answers:

B. DNS

DNS (Domain Name System) is commonly used to translate between

fully qualified domain names (FQDNs) and IP addresses. DNS does not

provide a method of network segmentation.

C. VPN

VPN (Virtual Private Networks) are used to securely communicate over an

encrypted tunnel across the network. VPNs are commonly used to provide

remote access to an organization's network from an insecure network or

location.

D. DHCP

DHCP (Dynamic Host Configuration Protocol) is used to automatically

assign IP address configurations on network devices. DHCP is not used

for network segmentation.

More information:

220-1101, Objective 2.6 - VLANs and VPNs

https://professormesser.link/1101020603

A user is reporting every page printed from a networked laser printer appears as garbled graphics and text characters. Which of the following is the MOST likely cause of this issue?

• Incorrect printer driver

• Damaged network cable

• Printer is low on memory

• Toner is low

Answer explanation

The Answer: A. Incorrect printer driver

The printer driver formats the print job into a language that the printer

can understand. If the incorrect driver is used, the language sent to the

printer may not be interpreted correctly and the output may appear very

different than the original document. In extreme cases, the output may

appear as unreadable pages of garbled text and graphics.

 

The incorrect answers:

B. Damaged network cable

A bad network cable would limit the speed or prevent the transmission

of print jobs to the printer. The network frames include error checking, so

any data corrupted as it traverses the network would not be accepted by

the printer. A bad cable would not cause the final output to be garbled or

difficult to read.

C. Printer is low on memory

A printer low on memory would print part of the rendered page. The

portion that was rendered would appear normal and would not be garbled

or difficult to read.

D. Toner is low

Low toner would cause the output to appear faded. Low toner would not

cause the final output to be garbled.

More information:

220-1101, Objective 5.6 - Troubleshooting Printers

https://professormesser.link/1101050601

 

During a presentation in a conference room, the lamp in an LCD projector is turning off after five minutes of use and back on ten minutes later. Which of the following would be the MOST likely reason for this issue?

• The video cable is faulty

• The display lamp has failed

• The cooling process is failing

• The display resolution is incorrect

Answer explanation

The Answer: C. The cooling process is failing

If an LCD (Liquid Crystal Display) projector becomes overheated, it

will automatically turn off to protect the bulb and other components.

This is similar to the automatic protections found in laptop and desktop

computers, and once the system cools down it can be restarted. If the

cooling fans are blocked or not working, this process may continue the

cycle until the cooling problem is resolved.

 

The incorrect answers:

A. The video cable is faulty

A bad video cable would display corrupted or missing information on the

screen, but it would not cause a projector to power down.

B. The display lamp has failed

If the lamp has failed, there will be no output from the projector. A bad

bulb would not commonly cause the projector to rotate through fiveminute

use cycles.

D. The display resolution is incorrect

A bad display resolution may show a skewed or non-proportional output

on the projected image. A bad display resolution would not cause the

projector to power off.

More information:

220-1101, Objective 5.4

Troubleshooting Video and Display Issues

https://professormesser.link/1101050401

A system administrator has just completed a memory upgrade on a database server. When starting the system, this message is displayed: "Boot Device Not Found." The BIOS configuration does not show any hard drives in the system. Which of the following would be the NEXT best troubleshooting step?

• Replace the hard drive

• Upgrade the BIOS

• Check the hard drive cables

• Modify the BIOS boot sequence

Answer explanation

The Answer: C. Check the hard drive cables

A memory upgrade would require work inside of a computer case, and it's

very easy to accidentally unseat or disconnect other cables. Since the only

change was the memory upgrade, a change to the storage subsystem would

not be expected. The most likely cause would be a cable issue.

 

The incorrect answers:

A. Replace the hard drive

Without knowing the exact reason for the error, a complete hard drive

replacement would be premature. Before making such a drastic change, it

would be useful to check cables and run diagnostics before determining

any hard drive issue.

B. Upgrade the BIOS

An older BIOS (Basic Input Output System) can potentially cause issues

with memory upgrades, but those issues would not affect the operation

of the hard drive. In this scenario, upgrading the BIOS would not be the

first troubleshooting choice, and it probably wouldn't be part of the overall

troubleshooting process.

D. Modify the BIOS boot sequence

If one storage device was trying to boot before the hard drive, then

modifying the boot sequence would be the correct course of action. In this

example, the only change was to the memory and not the boot process.

More information:

220-1101, Objective 5.3 - Troubleshooting Storage Devices

https://professormesser.link/1101050301

 

If a laptop's inverter is faulty, which of the following would be the MOST likely result?

• The battery will not recharge

• The system will not power on

• The screen will be difficult to see

• The USB interfaces will not be powered

Answer explanation

The Answer: C. The screen will be difficult to see

The inverter is used to convert the DC (Direct Current) power inside of

the laptop to AC (Alternating Current). The AC power is then used to

power the CCFL (Cold Cathode Florescent Lamp) backlights found in

older laptop computers. Without the backlight, it will be very difficult to

see the information displayed on an LCD (Liquid Crystal Display) screen.

 

The incorrect answers:

A. The battery will not recharge

Inverters are not used in the circuit that recharges a laptop battery.

B. The system will not power on

A bad power supply might cause the laptop to stay powered off, but a bad

inverter will not affect the power-on process.

D. The USB interfaces will not be powered

The inverter is specific to the backlight power and is not used for powering

the USB interfaces.

More information:

220-1101, Objective 1.2 - Laptop Displays

https://professormesser.link/1101010201