A+ Core 1 DION Practice Test 2

A workstation displays 'bootable device cannot be found.' UEFI doesn't recognize the hard drive, but cables are properly connected. What is MOST likely the issue?

Hard Drive Failure

What can a Multimeter do?

Measure the voltage, amperage, and resistance of a circuit.

How does a duplicate MAC address occur?

Two or more devices are responding to data requests as if they are the only device on the network with that physical address.

What is ONE indication that duplicate MAC address has occurred?

The switch ports to continually flap by going up and down as the assignments are updated within the CAM table.

In other words, the switch’s physical interfaces are continually going up and down.

How does a Collision occur?

Two devices on the same Ethernet network attempting to transmit data at the same time.

Collisions are a common occurrence in ___________ networks but should not occur in a ___________ switched environment.

1.) half-duplex

2.) full-duplex

How does Interference occur?

Electrical signals are sent and received in the same frequency band as your network traffic.

How does a duplicate IP address occur?

Two devices are issued the same IP by a DHCP server or are using identical static IP addresses.

Duplicate IP addresses will cause ___________, but it will not cause port flapping on a switch.

routing issues

Half-duplex Network vs Full-duplex Network

Half-duplex allows data to flow in both directions but only one at a time, while full-duplex enables simultaneous two-way communication, improving network efficiency and speed.

What are TWO examples of a Half-duplex Network?

Walkie-talkies and two-way radios.

When one person speaks, the other must wait until the first person finishes before responding.

Public Cloud

Available to everyone over the Internet. Typically has a pay-as-you-go model, which allows organizations to pay only for the resources they use.

Private Cloud

Your own virtualized local data center.

Hybrid Cloud

A mix of Public and Private.

Community Cloud

Several Organizations share the same resources.

If the system still fails to boot up from the correct drive, then ______________________________.

Go into the BIOS/UEFI setup program and check the existing boot order settings.

If they are in the wrong order, reconfigure them to ensure the usual boot device is listed first in the list and then restart the computer.

The F8 key will allow _____________________. This worked by default in Windows 7, 8, and 8.1, but need to be enabled before it will work in Windows 10.

The user to choose to boot into Windows in regular or safe mode.

The technician cannot ___________________ without first booting into Windows from the hard drive, so the technician would still need to _________________ first.

1.) configure the boot order in Windows

2.) reconfigure the boot order in the BIOS/UEFI

How much can a BD-R (Blu-ray disc) store?

Up to 25 GB for a single-layer disc or 50 GB for a dual-layer disc.

How much can a CD-RW (or known as just a CD) store?

Up to 700 MB

How much can a DVD-R (DVD) store?

4.7 GB for a single-layer disc or 8.5 GB for a dual-layer disc.

An SD card is a type of memory card and is not considered an ___________.

Optical disc

If there were configuration changes to the DNS or DHCP server, it would _____________________.

Limit connectivity completely instead of simply slowing down the connection.

If the network changed from DHCP to static assignments, the workstations would not get an ____________ and ________________________.

1. APIPA address

2. Would not have connected to the network at a slower speed.

Often, security updates, patches, and upgrades will reconfigure a network card's drivers during a Windows security update. If this happens, the system may ____________________________.

To fix this, simply:

1.) Revert to a more generic version of the driver, decreasing speeds from 1 Gbps to 100 Mbps.

2.) Roll the network card's drivers back to the previous driver to restore functionality and correct it.

If the paper feels dusty or the toner doesn't adhere to the printer, this usually indicates a _______________.

Failing fuser that needs to be replaced.

The five main things you need to include for network-attached storage (NAS) devices are:

(1)

(2)

(3)

(4)

(5)

(1) media streaming capabilities,

(2) file-sharing capabilities,

(3) Gigabit NIC,

(4) RAID array, and

(5) hard drives.

FastEthernet NIC

Network Speed:

Network Speed: 100 Mbps

Gigabit NIC

Network Speed:

Network Speed: 1 Gbps (1000 Mbps)

A technician uses a _____________ to test a faulty Ethernet port on a laptop.

Loopback plug

After running diagnostic software, the Loopback Plug reports that the port is sending packets but not receiving them. What does this indicate, and what is the next step?

The Ethernet port on the laptop is faulty; replace or repair the port.

What is in the circled area of the image?

Mainboard power (Specifically an ATX 24-pin power connector to the motherboard).

What port is used by the NetBIOS protocol to share files and printers on Windows networks?

NetBIOS/NetBT operates on TCP/UDP ports 137 and 139.

What is Elasticity in cloud computing?

The automatic provisioning and de-provisioning of resources based on demand, ensuring efficient use of resources and cost savings.

What is Scalability in cloud computing?

The ability to handle an increase in workload over time but does not necessarily imply automatic adjustments.

What is Availability in cloud computing?

Relates to the reliability and uptime of services rather than dynamic resource adjustment.

What does Multitenancy do in reference to cloud computing?

Allows multiple customers to share the same physical resources securely while maintaining isolation between their data and workloads.

In a laser printer, what function does a Transfer Roller perform?

It is the component in a laser printer that applies an electric charge to the paper to attract toner from the photoconductor during the imaging process.

In a laser printer, what function does a Pickup Roller perform?

It is the component in a laser printer that turns above a stack of paper to feed a sheet into the feed roller.

In a laser printer, what function does a Separation Pad perform?

It is the component in a laser printer that acts as a stationary pad in the paper tray to push the stack of paper backward to allow only a single sheet to be fed into the printer.

What technology could be used in an unlicensed long-range fixed wireless system?

Wi-Fi

What is MFA?

Multifactor Authentication

Username, a password, and a one-time code texted to their smartphone to log in is considered ______.

Multifactor Authentication, not Single Sign-On

Just like a printer, a projector also has a _________ that needs to be reset after troubleshooting.

Counter (specifically a bulb life counter in this case)

You're configuring a printer for a 4-computer network with no available switch ports or servers. All computers are in a single workgroup. What method would BEST allow all computers to print?

Configure it as a shared printer connected to one of the four workstations.

Due to the small size of the network and the lack of additional open switch ports, it would BEST to connect the printer to one of the workstations and configure it as a shared printer. This will allow any of the other workstations to print to the shared printer via the connected workstation. This allows the workstation to act as a print server, which means that the computer must always be left on or the rest of the users would be unable to print.

What is Latency?

The measure of time that it takes for data to reach its destination across a network.

What is a Jitter?

A network condition that occurs when a time delay in the sending of data packets over a network connection occurs.

What network performance metrics is used to represent variable delay experienced by a client when receiving packets from a sender?

Jitter

What is Bandwidth?

The maximum rate of data transfer across a given network.

What is Throughput?

Bandwidth is more of a theoretical concept that measures how much data could be transferred from a source to a destination under ideal conditions.

Therefore, we often measure throughput, instead of bandwidth, to monitor our network performance.

An auto mechanic needs to purchase a new printer for their shop. The printer will be used to create estimates and invoices for their customers. The printer must support the ability to create duplicate invoices using multiple sheets of paper separated by carbon paper using tractor-fed paper. What type of printer should be used?

Impact

READ QUESTIONS CAREFULLY!!!

READ QUESTIONS CAREFULLY!!!

What is a Screened Subnet(formerly called a Demilitarized Zone or DMZ)?

A portion of a private network connected to the Internet and protected against intrusion.

For Wireless B and G networks, you should always use channels ____, ____ and ____ which don't overlap to ensure there aren't interference issues caused by overlapping frequencies.

1, 6, and 11

What describes an IPv6 address of ::1?

Loopback

After a laptop lost power unexpectedly, it displays at 800x600 resolution. The normal 1920x1080 option is unavailable in Display Settings. What is the cause?

Corrupted or missing display driver.

PCIe x1

PCIe x4

PCIe x8

PCIe x16

A plasma display is a _____________________.

Type of flat panel display that uses small cells containing plasma with ionized gas that responds to electric fields.

Plasma displays create ___________ and are not as _____________ as an LCD, LED, or OLED display.

1.) Excessive heat

2.) Energy efficient

If the lights are steady on a network interface card (NIC), it indicates that there is ________________. If it is blinking, this indicates that data is _____________________.

1.) No network activity

2.) Passing over the NIC to the network.

What are Unified threat management (UTM) devices?

Network appliances that provide all the security functions of a firewall, malware scanner, intrusion detection, vulnerability scanner, data loss prevention, content filtering, and other security devices into a single device or appliance.

An embedded system is a computer system that is designed to ____________________________.

Perform a specific, dedicated function, such as a microcontroller in a medical drip or components in a control system managing a water treatment plant.

The USB-C connector is used on the _________________.

Thunderbolt 3, 4, and 5 cables

What is Network address translation (NAT)?

A network service provided by a router or proxy server to map private local addresses to one or more publicly accessible IP addresses.

What does IDS stand for?

Intrusion detection system

The _____________ are stored in the CMOS (complementary metal-oxide-semiconductor).

BIOS settings

What does a TACACS+ server do?

TACACS+ (Terminal Access Controller Access Control System Plus) is a protocol used for centralized authentication, authorization, and accounting (AAA) in network devices.

What is SCADA?

Supervisory control and data acquisition (SCADA) systems. It is an industrial control solution that enables real-time monitoring, control, and data acquisition for large-scale processes.

What does ICS stand for?

Industrial control systems

Triple-Channel Memory

192-bits of data, or rather three 64-bit buses.

Quad-Channel Memory

256-bits of data, or rather four 64-bit buses.

Dion Training's multifunction laser printer recently had a paper jam. An employee pulled the paper out of the rollers to clear the jam. Unfortunately, the device still has a paper jam error displayed on the screen and will not print. You have been called to fix this issue. Which of the following should you attempt FIRST?

Verify the paper path and its sensors are not blocked.

What wiring standards should be used when installing ethernet cabling in an office or data center?

T-568B

RG-6 cabling is recommended for your _____________________.

Cable TV, satellite, TV antennas, or broadband internet.

A DB-9 connector is used to terminate an _______ serial cable.

RS-232

What would you MOST likely use to configure PXE to set up remote imaging on a computer during a deployment?

BIOS boot option

What is PXE?

The Preboot Execution Environment (PXE) is an industry-standard client/server interface that allows networked computers that are not yet loaded with an operating system to be configured and booted remotely by an administrator.

What is Secure Boot?

a security system offered by UEFI that is designed to prevent a computer from being hijacked by malware.

What does Power Management do?

Allows Windows to reduce or turn off the power supplied to hardware components to save energy.