Wrong Answers (Dion 3)

A phone connected to a computer via USB is not charging and doesn’t detect connection to the computer. What is the first step?

Just try a different port on the computer to rule out port failure.

A computer keeps booting to the incorrect hard drive. What is the best step?

Reconfigure boot order with BIOS/UEFI.

What type of connector is found on a Thunderbolt 3 cable?

USB-C.

A laptop’s built-in webcam is not functioning during video calls. The webcam is enabled in the BIOS but the OS doesn’t detect it. What is the next step?

Check the physical connection of the webcam.

The OS not detecting it implies a hardware problem, and this is the simplest hardware fix.

A company runs its database server on an IaaS platform, but it goes down due to large traffic during peak hours. What is the best solution?

Use auto-scaling to add resources when demand rises.

Migrating to SaaS is an unnecessary fix, and restarting when usage is too high is a temporary one with high overhead.

What is the best wireless generation for connecting various devices using long range without signal loss and a 5 GHz frequency?

802.11ac.

It uses 5 GHz only and 6.9 Gbps.

802.11b and 802.11g use only 2.4 GHz. 802.11n is weaker than 802.11ac.

A laptop keeps shutting down, especially during processor-intensive tasks, but no odors are present. Most likely cause?

Inadequate airflow and overheating.

A laptop keeps shutting down, especially when it is moved around, but no odors are present. Most likely cause?

Loose battery connection.

Movement causes total shutdown.

What is PXE?

Pre-boot Execution Environment.

An interface that allows networked computers that don’t have an OS to be configured and booted remotely by an admin.

How is PXE configured?

Using the BIOS boot option.

Not enabled by a local OS.

What does blinking NIC light mean?

Data is passing over the NIC to the network.

What does a steadily on NIC light mean?

You are connected to the network but there is no activity.

What does an off NIC light mean?

You are not connected to the network.

If a company smartphone is stolen but still communicating with the MDM, what should you do?

Preform a remote wipe of the device.

What security measures are given to MDM company smartphones?

Full storage encryption, login credentials and biometrics/MFA, hardware restrictions, app block lists.

The MDM can also remotely manage them.

What color is USB 2.0?

Black

What is this?

FireWire ports.

(400 on the left, 800 on the right)

Are memory channels (RAM-CPU channels) parallel or point to point?

Point to point.

Older RAM and PCI used parallel, modern RAM and PCIe use point to point.

What channel option would allow two independent 64-bit pathways to achieve 128 bits of data transfer per job from RAM to CPU?

Dual-channel.

Each channel is one 64-bit bus.

What is display resolution?

What is display orientation?

Resolution is the number of pixels in the display.

Orientation is the arrangement (rotation, dimensions of the image).

What does a transfer roller of a laser printer do?

It applies an electric charge to the paper to attract toner from the drum.

What does a pickup roller do?

It turns above a stack of paper to feed a sheet into the feed roller.

Which part of a laser printer is faulty if it is printing pages that have a dust-like coating?

The fuser.

The fuser is a pair of heated rollers that melts loose toner powder and engrains the image onto the page.

How can you reduce mobile data usage if a device has a limited data plans?

Restrict synchronization to WiFi connections only.

Don’t disable synchronization for all apps, as that is impractical.

If a loopback plug shows that an Ethernet port is sending packets but not receiving them, what does it mean?

It means the port itself is faulty.

Loopback plugs don’t tell you about the cable or network configuration, just individual ports.

What can cause network speeds to drop after a Windows security update?

If a network card’s drivers are reconfigured automatically.

What can cause double images / ghost prints on laser printer output?

A faulty drum.

The drum is responsible for giving the page an electrostatic charge so it can receive toner. If it isn’t charging properly, it can cause this.

What is the most likely issue if a computer makes odd noises and says “no source” after a high end PCIe x16 graphics card is installed?

The workstation power supply isn’t powerful enough to support the card.

“No source” does not imply the card is defective.

If you ran out of internal storage and need more, but you still want speed, which is better- 1 TB SSD or 3 TB HDD?

1 TB SSD.

Should you connect an office printer to the guest wireless network?

No.

It must be connected to the corporate wireless network. If it is on the guest network, workstations will not be able to reach it and print anything out.

What is port forwarding?

A feature of a router in which requests are taken from the internet for a particular application and sent to a designated host on the LAN.

What else do you need to do after replacing the bulb/lamp of a projector?

Reset the life counter of the bulb. Even after replacing the dead bulb, the projector doesn’t know you changed it, and still thinks the bulb is dead due to its life counter.

What can cause a projector to automatically turn itself off?

Overheating.

If a projector keeps turning itself off, check if the cooling fan is overly dirty or failed.

What are the there main refresh rates?

60 Hz is standard in most devices.

120 Hz or higher is ideal for high speed, and used in gaming.

What are the loopback addresses?

::1 for IPv6

127.0.0.1 for IPv4

Designed to send a test signal to a network designation to diagnose problems.

What is the red circle thing?

A track point. Used for cursor control.

What is resource pooling?

The ability of a VM to have memory, processing, and storage allocated for its use.

What is synchronization?

The continuous coordination of data between devices and systems.

During startup you get the error “bootable device cannot be found”

UEFI doesn’t recognize the hard drive, but the cables are properly connected.

What is the issue?

The hard drive itself has failed.

If BIOS/UEFI does not recognize, it is either failed or disconnected.

If the boot order of the devices is incorrect, the system would still try to boot from each connected drive before issuing the no bootable device error message.

When adding a new WAP, should its settings be compatible with the existing WAPs?

Yes.

At 2.4 GHz, use only channels 1, 6, and 11.

Make sure they are using the same mode / generation.

Speed and duplex settings must match the settings of the switch port it connects to.

Security settings must also match.

If a cellphone plan with unlimited data sees upload speeds drop significantly when uploading consistently over a long period (25-30 minutes), what could be the cause?

The smartphone reached its data cap for the month.

While unlimited data is advertised, there is still a transfer limit. When this limit is reached, the provider may throttle the upload speed.

What is a cable tester?

A device that ensures a cable is properly configured (as either straight through or crossover) and provides detailed information on the physical and electrical properties.

What is a multimeter?

A device that measures electrical properties such as voltage, amperage, and resistance of a circuit.

Used for fault finding and measuring power.