A+ Core 1 DION Practice Test 3

What port should you block at the firewall if you want to prevent a remote login to a server from occurring?

Port 22 - Secure Shell

What is Secure Shell?

The protocol used for remote administration and file copying using TCP port 22.

What device would you configure an access control list (ACL) to implement a security policy within your network?

Firewall

What does a network Hub do?

A hub provides no intelligence in its interconnection functions so that whatever is received on one port is repeated out every other port.

This leads to many collisions occurring on the hub and increases the number of rebroadcasts which can slow down the entire network.

What does a network Repeater do?

It is an electronic device that receives a weak or degraded data signal, regenerates it to its original strength and shape, and retransmits it to extend the reach of a network.

Q.34 A customer reports their laptop cannot detect any wireless networks despite the Wi-Fi toggle being enabled. The wireless card appears in the Device Manager with current drivers, but the laptop was recently dropped. What should you do next?

Reseat the wireless card in its slot.

The recent physical impact suggests the wireless card may have become loose in its slot. Reseating the card ensures it is securely connected.

Resetting network settings or testing with a USB adapter could help later, but first, the hardware connection should be verified.

Cross-talk can happen due to ______________, not just improper cabling.

Physical abuse

What is Cross-Talk?

An effect caused by the unintentional and undesired transmission (leakage) of a signal from one cable to another.

Q.43 A technician is replacing a faulty laptop webcam. After removing the bezel and disconnecting the small internal webcam module, what should the technician’s next step be before installing the replacement?

Inspect the connector and cable for physical damage.

Also, testing it via an external USB port is impossible for an integrated module.

What is ONE cause for a duplicate IP address to occur?

A static address has been configured on the workstation.

If you defined a static IP address for a workstation or network device, duplicate IP address conflicts may occur on a DHCP network. To resolve it, convert the workstation or network device with the static IP address to a dynamic assignment or exclude the static IP address from the DHCP scope on the DHCP server.

Q.49 You just installed an SSD into a laptop to increase the storage speed of the device. What should you configure to increase the lifespan of the newly installed SSD?

Disable regularly scheduled defragmentation of the SSD.

An SSD (Solid-State Drive) is limited in the ___________________________.

Total number of write functions that can occur over its lifespan.

When you defrag a hard drive, especially an SSD, it will cause tons of small write accesses, _____________.

Reducing the hard drive's lifespan.

What does Defragging a Hard Drive do?

It reorganizes scattered file fragments so that data is stored in contiguous blocks, improving access speed and overall system performance.

What is the virtualization technology supported by most modern Intel processors?

Virtualization Technology (VT)

If you are using an AMD processor, and wish to use virtualization, it should support __________________.

AMD-V (AMD's virtualization technology).

What is HyperThreading (HT)?

An Intel CPU architecture implemented to expose two or more logical processors to the OS to deliver performance benefits.

Intel-V does not ________!

EXIST!

Q.51 A network technician is troubleshooting a connectivity issue in a small office. After testing, they find that one Ethernet port in a wall jack is not working. Upon inspecting the punchdown block, the technician notices that one of the wires appears loose. How should they use the punchdown tool to fix the issue?

Place the loose wire back into its correct slot and firmly press it into place with the punchdown tool.

Q.54 Dion Training's video editor wants to install a new dedicated GPU using an expansion card. Which of the following should they verify before installing the new card?

The power supply's wattage rating.

Google Workspace and Gmail are what type of cloud model?

SaaS

IaaS gives you ___________, _________, and __________.

1.) Virtual servers

2.) Storage

3.) Networking

A gigabit NIC can help handle a _________________.

Heavy network load created by sharing large files over the network.

Q.63 You are troubleshooting an issue with an impact printer in an automotive service department. The printer has begun to print unevenly. As the print head goes from left to right across the page, the printout goes from darker to lighter. What is the MOST likely cause of this issue?

Defective ribbon advance mechanism

If the printer ribbon itself were worn out, it would be _________________________.

Lighter in color as you went down the page (not from left to right).

Q.65 A wireless router provides 1 Gbps fiber WAN connectivity. Wired clients have fast connections, but wireless clients show high latency and only 300 Mbps downloads. What is the most likely cause?

The wireless access point is experiencing RF interference.

A high signal-to-noise ratio is a _______________________.

Good thing on wireless networks and leads to faster speeds and lower retransmissions.

What is a good description of a DHCP Reservation?

By matching a MAC address to an IP address within the DHCP scope.

Cat 6a

Supports _______ for up to ___________ in length.

Supports 10 Gbps for up to 100 meters in length.

Cat 6

Supports _______ for up to ___________ in length.

Supports 10 Gbps for up to 55 meters in length.

Cat 5

Supports _______ for up to ___________ in length.

Supports 10 Mbps for up to 100 meters in length.

Cat 5e

Supports _______ for up to ___________ in length.

Supports 1 Gbps for up to 100 meters in length.

You connect a VOIP device on a user's desk and need to connect it to a PoE-enabled switch located in a communications closet about 150 feet (approximately 50 meters) away. What cable should you select to connect the VOIP device to the switch?

CAT 5e, CAT 6, or higher cable to make the connection.

This dual parity allows RAID 6 to ________________________.

Survive the simultaneous failure of any two drives without data loss—the array remains operational and all data remains accessible even with two failed drives.

RAID 10 will provide excellent redundancy and performance; 2 drives fail only if both drives are on ________________. _________________________.

One mirrored pair. If one drive on each mirrored pair fail, data will be lost

Intrusion Detection System (IDS) can only ____ malicious network traffic. Intrusion Prevention System (IPS) can ______ malicious network traffic.

1.) Log

2.) Block

IPS stands for:

Intrusion Prevention System

RAMBUS is a __________ technology; _____________________________.

1.) legacy

2.) Rambus dynamic random access memory (RDRAM) is a memory subsystem designed to transfer data at faster rates.

What is a POST card?

A plug-in diagnostic interface card that displays progress and error codes generated during the power-on self-test of a computer.

For a high-performance gaming computer, a ___________ hard disk drive or an SSD should be used.

For low-end office desktops, using a ________ hard disk drive to save money is acceptable.

1.) 15,000 rpm

2.) 5,400 rpm

What is Quality of Service (QoS)?

Using a network protocol to prioritize certain traffic types over others.

Enterprise networks can use QoS protocols to make sure traffic such as Voice over IP calling or video conferencing is given higher priority than traffic where packets' timing is less important, such as ordinary file downloads.

Q.20 An employee is complaining that their workstation is not booting into Windows when they reboot their machine. You noticed that during the reboot, the system is loading into a PXE-based OS. What should you do next?

Boot to BIOS and select the HDD from the boot order

The troubleshooting steps are to:

1.)

2.)

3.)

4.)

5.)

6.)

7.)

The troubleshooting steps are to:

(1) Identify the problem,

(2) Establish a theory of probable cause,

(3) Test the theory to determine the cause,

(4) Establish a plan of action to resolve the problem and identify potential effects,

(5) Implement the solution or escalate as necessary,

(6) Verify full system functionality and if applicable implement preventative measures, and

(7) Document findings, actions, outcomes, and lessons learned.

What type of connector is most often used to connect to an older smartphone?

Micro USB

What is a Syslog Server used for?

To capture logs from different devices. It allows for the correlation of logs to simplify log review and an analyst's ability to respond to alerts.

What type of internet connection allows for high-speed, bidirectional data communication over a hybrid fiber-coaxial (HFC) connection?

Cable

AAA servers can also be classified based on the protocol they use, such as a __________ server or ____________ server.

1.) RADIUS

2.) TACACS+

A _____ drive is only used in desktops and some networked file servers. Laptops most commonly use _____ and _____ magnetic drives.

1.) 3.5"

2.) 2.5"

3.) 1.8"

What port is SMB?

445

What port is Syslog?

514

What does the Chkdsk command do?

Scans and fixes problems with your hard drive, including file system errors and bad sectors.

What does the diskpart command do?

It can manage the computer hard drive, partitions, and volumes.

Reformatting a hard drive ______________________.

Clears all data, repairs file system issues, and prepares the drive for a fresh operating system or improved performance.

What cellular technology is comprised of LTE and LTE-A to provide higher data speeds than previous cellular data protocols?

4G

Q.55 Whenever you reboot your domain controller, you notice it takes a very long time to boot up. As the server is booting, you hear noises that sound like a steady series of clicks coming from the hard drive. What is the BEST action to help speed up the boot time of the server?

Defragment the hard drive

What is On-demand in reference to cloud computing?

Refers to the fact that a consumer can unilaterally provision computing capabilities, such as server time and network storage, as needed automatically without requiring human interaction with each service provider.

What is Edge computing?

Edge computing involves processing data closer to where it's generated (at the "edge" of the network) rather than in centralized data centers.

Edge computing typically ______________.

Reduces latency and bandwidth usage

What is Aspect Ratio?

The ratio of width to height in a display.

What is Yaw Rate?

It is a MADE-UP term for the exam and is used as a distractor in this question.

What type of cloud service provides instant access to servers and switches, is quickly provisioned, and is available for management over the internet?

IaaS

Q.87 You're building a video production workstation that will travel worldwide with maximum RAM, 8-core CPU, dedicated GPU, and redundant SSDs. What is the MOST important power supply characteristic?

Input voltage

What does a VLAN do?

A VLAN (virtual LAN) allows a single physical switch to be divided into logical networks.