Practice test questions

Question 1

What resource is used by virtual machines to communicate with other virtual machines on the same network but prevents them from communicating with resources on the internet?

Answer 1

Virtual Machines

Question 2

What is the MOST dangerous type of threat when using virtualization?

Answer 2

VM Escape. Is malware running on a guest OS jumping to another guest or the host. Biggest threat to virtualized systems.

Question 3

What technologies combines the functionality of a firewall, malware scanner, and other security appliances into one device?

Answer 3

UTM. Unified Threat Management appliance enforces a variety of security related measures, combining the work of a firewall, malware scanner, and intrusion detection/prevention.

Question 4

Which type of internet connection allows for high-speed bi-directional data communication over a hybrid fiber-coaxial (HFC) connection?

Answer 4

Cable. A cable modem is a type of network bridge the provides bi-directional data communication via radio frequency channels on a hybrid fiber-coaxial (HFC), radio frequency over glass (RFoG), and coaxial infrastructure.

Question 5

A client states that their computer is experiencing slow performance when reading or writing to the hard drive. You have already verified that it is not a system (software) performance issue, and the system is not overheating. What would be the BEST action to take in attempting to fix this problem?

Answer 5

Run Disk Repair Tool. To fix this problem, you should be running the disk repair too or run the Disk Defragment tool (for non-SSD devices) to optimize the file system and read/write performance.

Question 6

You are troubleshooting a network connection issue between the wall jack in a user’s office and the switch in the communications closet. When you plug a network cable into the wall jack, there is no connection. You check the switch in the communications closet to determine if the wall jack is properly connected to the switch. Unfortunately, none of the cables in the communication closet are labeled. What tools should you use to determine which cable in the communications closet is connected to the wall jack in the user’s office since none of the cables are properly labeled?

Answer 6

Tone Generator and Probe. A tone generator is connected to a wall jack and sends a repeating signal over the cable. The probe can then be used to detect which cable is attached to the wall jack by detecting the signal being sent by the tone generator.

Question 7

What type of connector is used to connect to a serial port or external modem?

Answer 7

DB-9. DB-9 is a standard type of serial connector used to connect to a serial port or external modem.

Question 8

A computer technician tries to determine if a computer with an Intel i7 processor has virtualization enabled to run a second operating system within VirtualBox. What should be checked to determine if the system can run a virtual machine?

Answer 8

Enable virtualization within the BIOS. By checking the settings in the BIOS, it can be determined if virtualization was enabled. For an intel processor, this option is usually listed as VT (virtualization Technology).

Question 9

On Tuesday evening, the company just pushed a new Windows 10 security update to all of its workstations. On Wednesday morning, the help desk receives numerous complaints about the network being slower than normal. Previously, the network was baselined at 1 Gbps as each workstation uses a wired CAT 6 connection. Today, a technician ran a speed test and saw the network was only reaching speeds of 100 Mbps. Which of the following is the MOST likely cause of the network slowdown?

Answer 9

The network card drivers were updated last night. Often, security updates, patches, and upgrades will reconfigure a network card’s drivers during a Windows security update. If this happens, the system may revert to a more generic version of the driver, decreasing speeds from 1 Gbps to 100 Mbps.

Question 10

You have been asked to troubleshoot a digital projector in the home theater in your neighbor’s basement. Your neighbor attempted to replace the projector’s bulb, but after running for a few minutes, a message appears on the screen, and the projector turns itself off again. Based on these symptoms, what are the MOST likely causes of the projector continually turning off after just a few minutes of usage with a new bulb? (Select TWO)

Answer 10

The cooling fan needs to be cleaned or replaced, and the bulb’s life counter needs to be reset. Most projectors keep track of the life of a bulb/lamp using a life counter. If you forget to reset the life counter after replacing the bulb/lamb, the projector can often turn itself off since it believes the bulb/lamp still needs to be replaced.

Question 11

If you are troubleshooting a S.M.A.R.T error on a customer’s PC, which of the following devices would you be troubleshooting?

Answer 11

Hard drive. S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) is monitoring technology that monitors storage devices like HDD (hard disk drive) and SSD (solid-state drive). This technology is used to provide the proper attribute errors or the drive’s current state to warn users and technicians of a pending drive failure.

Question 12

What type of cloud service bills consumers based on the actual usage of the service and may charge different prices based on the time of day it was utilized?

Answer 12

Metered Services. Metered services are pre-paid, a-la-crate, pay-per-use, or committed offerings. A metered service like a database may charge its users based on the actual usage of the service resources on an hourly or monthly basis.

Question 13

Dion Training wants to replace any remaining old CRT displays used in the company with a type of screen that produces less voltage and is more energy-efficient. Additionally, the new screen type selected should not contain a backlight. What type of display technology should they select?

Answer 13

OLED. An organic light-emitting diode(OLED) display is a type of LED flat panel display device that uses organic compounds that emit light when subjected to an electric current. OLED display works without a backlight because it emits visible light.

Question 14

A user is complaining that they are hearing a grinding noise coming from their workstation. You begin to troubleshoot the issue and determine that it is not an issue with the hard drive but is instead caused by the power supply’s fan. What actions would BEST solve this issue?

Answer 14

Replace the power supply. If the fan is the power supply is faulty, replace the entire power supply. You should never attempt to repair or fix a broken power supply or broken power supply cooling fan due to the power supply’s high voltage electrical components.

Question 15

What port is used to connect to an IMAP server?

Answer 15

143. The internet message access protocol (IMAP) is a TCP/IP application protocol that provides a means for a client to access email messages stored in a mailbox on a remote server using TCP port number 143.

Question 16

What protocols operates over port 3389 by default?

Answer 16

RDP. The remote desktop protocol(RDP) is a protocol used for the remote administration of a host using a graphical user interface. RDP operates over TCP port 3389.

Question 17

What type of connector provides power to an internal hard drive from the computer’s power supply using a 4-pin connector?

Answer 17

Molex. A molex connector provides DC power to the various drives inside a computer case. Molex and Mini-Molex are both 4-pins connectors, with Mini-Molex only being used to support floppy disk drives.

Question 18

What operating systems cannot be installed as a guest inside of a virtual machine on a Windows 10 laptop running Virtual Box?

Answer 18

MacOS. the macOS software can only be installed in a Virtual Box virtual machine running on a macOS system. If you are running Virtual Box on windows, it can only install other versions of Windows, Linux, and Unix.

Question 19

Which type of RAID should be used for a virtualization server that must have the fastest speed and highest redundancy level?

Answer 19

Raid 10. Raid 10 offers the fastest speed, best reliability, and highest redundancy but is more costly as the overall disk storage will be greatly reduced. A Raid 10 combines disk mirroring and disk striping to protect data stored in the array and required a minimum of four disks.

Question 20

Dion Training has a single switch that services every room within its offices. The switch contains 48 ports, but Jason wants to divide the ports based on functional areas, such as web development, instruction support, and administration. What technology should Jason utilize to divide the physical switch into three logically divided areas?

Answer 20

VLAN. A VLAN (virtual LAN) allows a single physical switch to be divided into logical networks. VLANs are only supported on managed switches, but they allow for a different logical subnetwork address to be assigned to various ports on the switch.

Question 21

What types of connectors are used to terminate a serial cable for an external modem?

Answer 21

DB-9. DB-9 connectors are designed to work the EIA/TIA 232 serial interface standard, which determined the function of all nine pins as a standard so that multiple companies could design them into their products.

Question 22

You want to play computer-based video games from anywhere in the world using your laptop or tablet. You heard about a new product called a Shadow PC that is a virtualized Windows 10 Home gaming PC in the cloud. What best describes this type of service?

Answer 22

DaaS. Desktop as a Service (DaaS) provides a full virtualized desktop environment from within a cloud-based service. This is also know as VDI (Virtualized Desktop Infrastructure) and is coming in large enterprise businesses focused on increasing their security and minimizing their operational expenses.

Question 23

Jay is complaining that the speed at which the cursor moves across his laptop’s screen when using his trackpad makes it difficult to properly control. What setting could he use to slow down the cursor in Windows 10?

Answer 23

Settings > Devices > Touchpad > Speed. If the speed of the pointer or cursor moving across the screen is difficult to control, a technician can reduce the touchpad’s speed in Windows 10 under Settings.

Question 24

What type of wireless network utilizes the 2.4 GHz or 5 GHz frequency bands and reaches speeds of 108 Mbps to 600 Mbps?

Answer 24

802.11n. The 802.11n (Wireless N) standard utilizes a 2.4 GHz frequency to provide wireless networking at speeds up to 108 Mbps or 5.0 GHz frequency to provide wireless networking at speeds up to 600 Mbps.

Question 25

You are building a virtualization environment to practice your penetration testing skills. This will require that you install several vulnerable Linux distributions as VMs. The VMs need to have access to a virtualized network but should not communicate with the host operating system or the internet. What types of network connections should you configure for each VM?

Answer 25

Private. The private network connection type will create a switch that is usable only by the VMs. The VMs cannot use the switch to communicate with the host. If you select internal, it can communicate between the host and the VMs. If you select external, the VMs would have internet access. If you select localhost, each VM could only communicate with itself.

Question 26

You are installing Windows 2019 on a rack-mounted server and hosting multiple virtual machines within the physical server. You just finished the installation and now want to begin creating and provisioning the virtual machines. What should you utilize to allow you to create and provision virtual machines?

Answer 26

Hypervisor. A hypervisor, also known as a virtual machine monitor, is a process that creates and runs virtual machines (VMs). A hypervisor allows one host computer to support multiple guest VMs by virtually sharing its resources. like memory and processing.

Question 27

Which of the following devices should be installed as an intermediary between your clients and the web servers they want to connect to make an HTTP request from the client, check it, and then forward it to its destination?

Answer 27

Proxy Server. A proxy server takes a whole HTTP request from a client, checks it, then forwards it to the destination computer on the Internet. When the reply comes back, it checks it and then shuttles it back to the LAN computer.

Question 28

You are configuring a SOHO network and only denying specific IP addresses from accessing the network while allowing any IP addresses not found on the list. Which of the following should be implemented?

Answer 28

Blocklist. A blocklist is a form of protection where only the items identified specifically on the list are blocked, whereas all other are allowed. For example, if you create an access control list that relies on block listing, it would allow every IP address not found in the allow list.

Question 29

You just printed a new sign for your office using thick cardstock paper with your network printer. Unfortunately, when you pick up the cardstock from the laser printer’s output tray, the printed image smears across the paper. Attempting to troubleshoot this problem, you decide to print another sign using regular printer paper and determine that the image does not smear when touched on the regular printer paper. What would be the NEXT step to perform in your troubleshooting efforts?

Answer 29

Increase the temperature of the fuser element. When printing with a laser printer, the paper passes through rollers in the fuser assembly, where temperatures up to 801 F (427 C) and pressure are used to bond the toner to the paper permanently. If you often print with specialty paper (i.e., envelopes, cardstock, & labels), you may want to turn up the fuser temperature on your printer. With thicker paper types, heat does not transfer as easily as it does with standard paper so the toner may not bond as well and the image could smear when it is touched.

Question 30

What type wireless network utilizes the 5 GHz frequency band and reaches speeds of up to 54 MBPS?

Answer 30

802.11a. The 802.11a (Wireless A) standard utilizes a 5 GHz frequency to provide wireless networking at speeds up to 54 MBPS. Unfortunately, when this was first released, the radios to operate with this standard were fairly expensive, so it did not sell well or become widespread.

Question 31

What type of cable is most commonly used to terminate a serial connection to a modem?

Answer 31

DB-9. A DB-9 connector is used to terminate an RS-232 serial cable. A ST, SC, LC, or MTRJ connector is used to terminate a fiber optic cable. An RJ-11 connector is used to terminate cables used for phone lines. An RJ-45 connector is used to terminate a copper twisted-pair Ethernet cable.

Question 32

What is a private IP address?

Answer 32

172.20.13.25. IP addresses are either public, private, localhost, or APIPA addresses. A private IP address is in the range of 10.x.x.x, 172.16-31.x.x, or 192.168.x.x. A localhost IP is 127.0.0.1. Automatic Private IP Addressing (APIPA) is a feature of Windows-based operating systems that enables a computer to automatically assign itself an IP address when there is no Dynamic Host Configuration Protocol (DHCP) server available to perform that function.

Question 33

A customer’s computer has a noisy, whining sound coming from it when in use. You opened the case and did not see any dust on the fans. What should you attempt next to eliminate the noise?

Answer 33

Apply a small amount of oil to the fan’s bearings. The best step would be to apply a small amount of oil to each of the fan’s bearings, as this will eliminate the noise. If the fans had been dusty, you would instead apply compressed air or clean the fan blades using a damp cloth. Since there was no dust noticed, this cannot be the whining source, and instead, you should apply oil to the bearings.

Question 34

What is the third step of the CompTIA troubleshooting methodology?

Answer 34

Test the theory to determine the cause. (1) Identify the problem. (2) Establish a theory of probable cause (question the obvious). (3) Test the theory to determine the cause. (4) Establish a plan of action to resolve the problem and then implement the solution. (5) Verify full system functionality and, if applicable, implement preventative measures. (6) Document findings, actions, and outcomes.

Question 35

You are working as part of the server team for an online retail store. Due to the upcoming holidays, your boss is worried that the current servers may not be able to handle the increased demand during a big sale. What cloud computing concepts can quickly allow services to scale upward during busy periods and scale down during slower periods based on the changing user demand?

Answer 35

Rapid Elasticity. Rapid elasticity is used to describe scalable provisioning or the capability to provide scalable cloud computing services. Rapid elasticity is very critical to meet the fluctuating demands of cloud users.

Question 36

What is a public IP address?

Answer 36

8.4.2.1. The IP address of 8.4.2.1 is public and is therefore routable. The IP address of 10.3.2.1 is a private Class A IP address, and therefore non-routable. The IP address of 192.168.2.1 is a private Class C IP address, and therefore non-routable. The IP address of 169.254.2.1 is an APIPA (Automatic Private IP Address), and therefore non-routable.

Question 37

A customer tried to install a PCIE x8 expansion card into a PCIE x16 slot on the motherboard. While the expansion card fits into the slot without any issues, it does not perform as the customer expected. How fast will a PCIE x8 expansion card run if installed in a PCIE x16 slot?

Answer 37

The card will run at x1 speed. While a PCIE x8 card will fit into either an x8 or x16 slot, it will only run at optimal speed when placed into an x8 slot. If the x8 card is placed into an x16 slot, it will reduce the speed to the equivalent of a 1x slot to ensure compatibility and reliability. Even though placing an x8 card into an x16 slot is supported, it is generally considered a bad practice.