Practice test questions Flashcards
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?
Virtual Machines
What is the MOST dangerous type of threat when using virtualization?
VM Escape. Is malware running on a guest OS jumping to another guest or the host. Biggest threat to virtualized systems.
What technologies combines the functionality of a firewall, malware scanner, and other security appliances into one device?
UTM. Unified Threat Management appliance enforces a variety of security related measures, combining the work of a firewall, malware scanner, and intrusion detection/prevention.
Which type of internet connection allows for high-speed bi-directional data communication over a hybrid fiber-coaxial (HFC) connection?
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.
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?
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.
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?
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.
What type of connector is used to connect to a serial port or external modem?
DB-9. DB-9 is a standard type of serial connector used to connect to a serial port or external modem.
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?
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).
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?
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.
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)
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.
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?
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.
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?
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.
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?
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.
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?
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.
What port is used to connect to an IMAP server?
- 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.
What protocols operates over port 3389 by default?
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.
What type of connector provides power to an internal hard drive from the computer’s power supply using a 4-pin connector?
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.
What operating systems cannot be installed as a guest inside of a virtual machine on a Windows 10 laptop running Virtual Box?
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.
Which type of RAID should be used for a virtualization server that must have the fastest speed and highest redundancy level?
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.
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?
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.
What types of connectors are used to terminate a serial cable for an external modem?
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.
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?
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.
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?
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.
What type of wireless network utilizes the 2.4 GHz or 5 GHz frequency bands and reaches speeds of 108 Mbps to 600 Mbps?
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.
