A+ 1101 PM C 49-69

Which of the following would be MOST commonly associated with the management interface on a switch?

• ST

• 802.11

• DB-9

• Thunderbolt

Answer explanation

The Answer: C. DB-9

The serial connectivity used with a DB-9 (D-subminiature size B, 9 pin)

interface is usually associated with management ports on switches, router,

and other infrastructure devices.

 

The incorrect answers:

A. ST

An ST (Straight Tip) connector is a fiber optic connector type.

Management interfaces are usually copper interfaces using a DB-9 or

USB (Universal Serial Bus) connectors.

B. 802.11

The management interface on a switch or router is typically a wired

connection. 802.11 wireless networking is not commonly associated with

management or console interfaces.

D. Thunderbolt

A Thunderbolt interface is commonly used for high-speed data

communication, and Thunderbolt is often associated with external storage

devices and video displays.

More information:

220-1101, Objective 3.1 - Copper Connectors

https://professormesser.link/1101030110

 

A user has reported they can't browse to Google's search page at

https://www.google.com. The workstation IP address is 192.168.1.5, the

subnet mask is 255.255.255.0, the default gateway is 192.168.1.1, and

the domain name servers are 10.2.2.1 and 10.2.2.2. A technician can

successfully ping the local IP address, the default gateway, and Google's

DNS server at 8.8.8.8. Which of the following is the most likely cause of

this issue?

• The Ethernet adapter's duplex setting is incorrect

• The default gateway is faulty

• The Internet connection is down

• The DNS servers are faulty

• The client's default gateway configuration is incorrect

Answer explanation

The Answer: D. The DNS servers are faulty

The DNS (Domain Name System) servers are responsible for converting

a fully-qualified domain name (www.google.com) to an IP address. If the

DNS servers are not working, then an IP address for a device cannot be

resolved and the communications process can't continue.

 

The incorrect answers:

A. The Ethernet adapter's duplex setting is incorrect

A duplex mismatch can cause performance slowdowns, but it would not

restrict access to a website.

B. The default gateway is faulty

The successful ping of Google's DNS server at 8.8.8.8 is a communication

occurring to a different network, so we know that the default gateway is

operating correctly.

C. The Internet connection is down

If the Internet connection was not working, the ping to Google's DNS

server at 8.8.8.8 would not be successful.

E. The client's default gateway configuration is incorrect

The ping to an external address is working properly, so the default gateway

configuration is most likely not the cause of this issue.

More information:

220-1101, Objective 5.7 - Troubleshooting Networks

https://professormesser.link/1101050701

 

 

A user in the facilities department is having an issue printing their

blueprints to a network laser printer. When they pick up their output, the

page contains specks and small dots randomly printed on the page with

the final output. Which of these is the MOST likely cause of this issue?

• Network is faulty

• Optical drum is not clean

• The fuser is not operating

• Printer is low on toner

Answer explanation

The Answer: B. Optical drum is not clean

The cleaning process of a laser printer removes any non-used toner from

the optical drum after one cycle of the printing process. If the cleaning

process isn't working properly, extra toner will remain on the drum and

can be transferred to the next section of the page output as dots or specs

on the page.

 

The incorrect answers:

A. Network is faulty

A problem with the network might cause a slow transfer of the print job

to the printer, but it wouldn't cause a portion of the page to be spotted

or speckled.

C. The fuser is not operating

The fuser applies heat and pressure to permanently melt the toner to the

printed page. A bad fuser would not cause dots or speckles on the

printed page.

D. Printer is low on toner

A laser printer low on toner would show a gradual fading of images as

each page is printed. The low toner would not cause dots or speckles to

appear on the final output.

More information:

220-1101, Objective 5.6 - Troubleshooting Printers

https://professormesser.link/1101050601

 

A user would like to ensure all apps on their smartphone use 802.11

networking instead of the cellular network. Which of the following would

provide this functionality?

• Enable data caps

• Use biometric authentication

• Synchronize to iCloud

• VPN client

Answer explanation

The Answer: A. Enable data caps

Most smartphones include the ability to set limits on how much data is

transferred over certain network types. For example, iOS can be configured

to allow or disallow downloads over a cellular network and can limit the

size of downloads if a cellular network is enabled.

 

The incorrect answers:

B. Use biometric authentication

The authentication process on a smartphone is useful for limiting access to

the device, but the authentication settings do not limit network access for

certain apps.

C. Synchronize to iCloud

Synchronizing to a cloud-based storage system may provide useful

backups and file storage, but it doesn't modify the network connectivity

used for apps.

D. VPN client

A VPN client create an encrypted tunnel to protect any network

communication from a device. Using a VPN doesn't change the

communication method used by apps on a smartphone.

More information:

220-1101, Objective 1.4 - Mobile Device Configurations

https://professormesser.link/1101010403

A network administrator is installing an Ethernet cable containing gel and a ground wire. Which of the following would MOST likely describe this cable?

• Plenum

• Direct burial

• Optical

• Ethernet patch

Answer explanation

The Answer: B. Direct burial

A direct burial cable is designed to be installed in the ground, so it

includes waterproof gel to protect the copper cables. The cables also

include a ground wire to support an electrical ground.

 

The incorrect answers:

A. Plenum

A plenum-rated cable includes fire suppression with low flame and smoke

characteristics for use in the plenum area above a ceiling. Plenum rated

cables do not include gel in the cable.

C. Optical

Fiber optics are useful for transmitting data over extended distances,

but they do not commonly include a ground wire. Fiber optics are not

conductive and do not require an electrical ground.

D. Ethernet patch

An Ethernet patch cable is often used for short connections between a

switch and patch panel, or between a wall jack and a computer. Patch

panels do not commonly include gel or a ground wire.

More information:

220-1101, Objective 3.1 - Network Cables

https://professormesser.link/1101030101

 

A Windows computer is configured to obtain an IP address automatically. Which of the following would occur if the automatic assignment process was not working?

• The IP address would be set to 0.0.0.0

• A link-local address would be assigned

• The Ethernet adapter would be disabled

• The last known good IP address would be used

Answer explanation

The Answer: B. A link-local address would be assigned

If a device is configured to obtain an IP address from a DHCP (Dynamic

Host Configuration Protocol) server and the DHCP server is not

available, an APIPA (Automatic Private IP Addressing) address, or linklocal

address, would be assigned.

 

The incorrect answers:

A. The IP address would be set to 0.0.0.0

IP address configurations of 0.0.0.0 are not valid for normal network

communication.

C. The Ethernet adapter would be disabled

Although an IP address would not be obtained from a DHCP server, the

operating system would not disable the entire network adapter.

D. The last known good IP address would be used

If the DHCP process was not working, the computer would not assume

the previous IP address would still be available. Instead, the computer

would assign itself an APIPA address for local communication.

More information:

220-1101, Objective 2.5 - Assigning IP Addresses

https://professormesser.link/1101020502

A web server administrator has received a notification that disk 1 in a RAID 5 array has failed. Which of the following would be the BEST next step to resolve this drive failure?

• Replace disk 1 and restore from backup

• Replace all drives and restore from backup

• Replace all drives and rebuild the array

• Replace disk 1 and rebuild the array

Answer explanation

The Answer: D. Replace disk 1 and rebuild the array

A RAID 5 (Redundant Array of Independent Disks, level 5) array is

designed to maintain data availability in the event of a single drive failure.

In this example, it's unlikely that the users even realized one of the drives

on the array was suddenly unavailable because the array would continue

to operate normally with all data intact. To resolve this issue, the bad drive

would need to be replaced, and the array would rebuild the data on the

new drive using the redundant data from other drives.

 

The incorrect answers:

A. Replace disk 1 and restore from backup

No data was lost on the RAID 5 array, and the array will continue to

provide access to read data and write data to the array. A restoration from

backup is not required after replacing the bad drive.

B. Replace all drives and restore from backup

Only one drive has failed, so there's no need to replace the good drives. A

RAID 5 array will also maintain availability of the data, so restoring from

a backup is also not required.

C. Replace all drives and rebuild the array

If all drives are replaced in the RAID 5 array, there would be no data to

rebuild from. The bad drive is the only drive that needs to be replaced, and

the rebuilding process will reconstruct the data on the new drive.

More information:

220-1101, Objective 5.3 - Troubleshooting Storage Devices

https://professormesser.link/1101050301

A high speed network provides access to a large array of hard drives. Which of the following would best describe this type of network?

• PAN

• LAN

• SAN

• MAN

Answer explanation

The Answer: C. SAN

A SAN (Storage Area Network) is a high-speed network connecting users

with large data stores. The SAN looks and feels like a local storage device,

and provides block-level access for efficient reading and writing.

 

The incorrect answers:

A. PAN

PAN (Personal Area Network) connections describe the wireless links

between mobile devices and personal accessories. For example, a Bluetooth

headset would be considered a PAN connection.

B. LAN

A LAN (Local Area Network) describes the network used in the

immediate vicinity to a computing devices. The Ethernet network in a

business or home would be considered a LAN.

D. MAN

MAN (Metropolitan Area Network) links are usually within the same city

or general metropolitan area. MANs are usually the midpoint between a

LAN and a WAN (Wide Area Network).

More information:

220-1101, Objective 2.7 - Network Types

https://professormesser.link/1101020702

 

A user in the accounting department is reporting that all of the printed pages from a networked laser printer are completely blank. Nothing appears to be written on any of the printed pages. Which of the following would be the MOST likely cause of this issue?

• Fuser is faulty

• Print drivers are incorrect

• Printer out of memory

• Toner cartridge is faulty

Answer explanation

The Answer: D. Toner cartridge is faulty

If the toner cartridge is completely empty or is not properly providing

toner to the printer, then nothing will be printed on the final output.

 

The incorrect answers:

A. Fuser is faulty

The fuser uses heat and pressure to permanently affix the toner to the page.

If the fuser is not working, the final output will easily smear when touched.

A faulty fuser will not cause the output to appear blank.

B. Print drivers are incorrect

An incorrect print driver could cause the output to be garbled or different

than the original, but it would not cause the page to appear blank.

C. Printer out of memory

When a printer runs out of memory during the page rendering process,

it will continue with the printing process but only a portion of the page

is printed. The printer will also display a message on the printer console

regarding the memory issue. An out of memory condition does not

commonly print blank pages.

More information:

220-1101, Objective 5.6 - Troubleshooting Printers

https://professormesser.link/1101050601

A systems administrator has just installed a new server in a data center. When pressing the power button, there’s no response from the server, no lights appear on the front display, and no fans are spinning. Which of the following would be the MOST likely reason for this issue?

• An operating system is not installed on the server

• The power supply switch is set to the wrong input voltage

• The BIOS needs to be upgraded

• The keyboard and mouse are not connected

Answer explanation

The Answer: B. The power supply switch is set to the wrong input voltage

If the data center power provides 120 volts and the computer's power

supply is set to 240 volts, the computer will not be able to start. Some

power supplies will attempt to start with the lower voltage while other

power supplies will not work at all. In either case, the computer is not

going to perform properly with the lower voltage and may be damaged by

the difference in expected voltage.

 

The incorrect answers:

A. An operating system is not installed on the server

An operating system is not required to power on a computer. Once the

POST (Power On Self-Test) process completes, a computer without an

operating system will provide an error message on the screen such as "No

Bootable Device."

C. The BIOS needs to be upgraded

A BIOS upgrade is not required to power on a computer. Upgrading the

BIOS is not a common process, and it's not required to have a system

power on.

D. The keyboard and mouse are not connected

The lack of a keyboard or mouse will not prevent a computer from

powering on, but the BIOS may provide a message after the POST

process that a keyboard is not connected to the system.

More information:

220-1101, Objective 3.5 - Computer Power

https://professormesser.link/1101030501