A+ 220-1101 Flashcards by Felipe Perla

Which of the following devices MOST often uses a Thunderbolt cable?

A. Linux PC
B. Android mobile
C. Apple laptop
D. Chromebook

C. Apple laptop

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A user reports limited or no connectivity on a laptop. A technician runs ipconfig /all with the following result:
IPv4 connectivity…limited or none
IPv4 address…169.254.254.1
subnet mask…255.255.0.0
Which of the following is the MOST likely cause of this issue?

A. DHCP failure
B. ARP cache
C. DNS resolution
D. Duplicate IP address

A. DHCP failure

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Which of the following is an unsecure remote access protocol?

A. SSH
B. HTTPS
C. SFTP
D. Telnet

D. Telnet

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Which of the following cable types is the standard connector on printers?

A. DVI
B. eSATA
C. USB
D. Lightning

C. USB

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Which of the following is the MAXIMUM power PoE+ provides?

A. 15.4W
B. 30W
C. 60W
D. 95W

B. 30W

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A user reports the touch screen on an Android smartphone is not responding to any input. The technician has cleared the cache, restarted the phone, and ensured the phone is fully charged. The issue still persists. Which of the following should the technician replace on the phone to MOST likely resolve the issue?

A. System on a chip
B. Accelerometer
C. Digitizer
D. Gyroscope

C. Digitizer

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Which of the following is the SAFEST way to replace RAM on a server that has a redundant power supply?

A. Unplug one power cable
B. Verify the RAM temperature
C. Utilize a grounding strap
D. Replace the RAM while the server is running

C. Utilize a grounding strap

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A systems administrator has been tasked with allowing SMTP traffic through the system’s host-based firewall. Which of the following ports should the administrator enable?

A. 23
B. 25
C. 80
D. 161

B. 25

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A technician is monitoring all outbound traffic in a SOHO. Which of the following is the MOST cost-effective solution to monitor the traffic?

A. Spectrum analyzer
B. Network tap
C. Loopback plug
D. Toner probe

B. Network tap

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A technician recently discovered the root cause of an application error that several users have been experiencing. The technician updated the configurations on the affected machines and verified full functionality was restored for all users. Which of the following actions should the technician perform NEXT?

A. Write a knowledge base article in the ticketing software to expedite future incidents.
B. Submit a bug report to the developer of the application, along with the steps taken to resolve the issue.
C. Work with the developer to proactively collect the application logs to identify future errors of this type.
D. Send an email communication to the company about the issue and the steps taken to resolve it.

A. Write a knowledge base article in the ticketing software to expedite future incidents.

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A desktop support technician is tasked with upgrading a laptop so that it has the fastest data access possible. Which of the following BEST satisfies this requirement?

A. mSATA SSD
B. M.2 NVMe SSD
C. 2.5 SATA SSD
D. 2.5 SAS HDD

B. M.2 NVMe SSD

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The Chief Executive Officer wants to ensure company data is stored in a manner that provides the company with complete control over how the data is managed. Which of the following is the BEST cloud deployment model for this request?

A. Community
B. Hybrid
C. Public
D. Private

D. Private

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A user sends a print job to a network printer, and the print job uses double the amount of paper as expected. Which of the following should the user configure to get the expected result?

A. Duplex
B. Collate
C. Landscape
D. Transparency

A. Duplex

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A startup company is outgrowing its current office space and is requiring employees to work remotely. The company must comply with government-enforced requirements to safeguard all aspects of data, so the IT department plans to maintain complete control over users’ operating systems. Which of the following should the IT department implement?

A. VDI
B. IaaS
C. VPN
D. SaaS

A. VDI

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Which of the following would be the BEST reason to use a virtual machine as a sandbox?

A. To test new software in a safe environment
B. To increase the efficient use of computing resources
C. To run multiple machines on the same hardware
D. To have dedicated hardware for a single system

A. To test new software in a safe environment

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Which of the following would MOST likely be used to connect one or more devices to the internet in a SOHO?

A. Hub
B. Ethernet gateway
C. Wireless access point
D. Router

D. Router

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Which of the following is the PRIMARY security concern with virtual machine escape?

A. Cross-site scripting
B. Compromising the hypervisor
C. Overutilization of resources
D. Rogue virtual machines installed on the hypervisor

B. Compromising the hypervisor

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An IT manager is requesting that the company buy new cables to be used with F-type connectors that are already in house. Which of the following cables should the company buy?

A. Coaxial
B. Plenum
C. Cat 5e
D. Fiber

A. Coaxial

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A technician configured a new SOHO router for a small business. The ISP gave the technician an IP address on the router’s WAN port. Which of the following addresses did the technician MOST likely configure on the router?

A. 10.1.50.30
B. 19.45.7.28
C. 169.254.168.10
D. 172.22.40.6

B. 19.45.7.28

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A technician is diagnosing a workstation that shuts down unexpectedly during a burn-in test. Which of the following is the MOST likely cause for this symptom?

A. Faulty CMOS battery
B. OS update issue
C. Overheating
D. Faulty RAM

C. Overheating

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The help desk received a ticket regarding issues with a laser printer. The printer has had repairs previously for scanning issues. Currently, the printed text is not adhering properly to the paper. Which of the following should be replaced to resolve this issue?

A. Fuser
B. Waste container
C. Roller
D. Toner

A. Fuser

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A technician has set up a new conference room with a TV and a video soundbar. The technician wants to test the system with a conference call. During the test, the TV speaker produces sound, but the soundbar does not. Which of the following is the MOST likely cause of the issue?

A. The volume on the TV needs to be turned up
B. The conference call needs to be unmuted for audio.
C. An incorrect HDMI cable is being used
D. The TV’s HDMI-ARC port is not being used

D. The TV’s HDMI-ARC port is not being used

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A technician is setting up a project for a videoconferencing system. When the user attempts to connect a laptop to the system, the system displays the following error message: no source found. The user tries multiple cables and inputs on the projector. Which of the following should the user try NEXT?

A. Check the bulb on the projector and replace it with a new one.
B. Check the display settings on the computer and set them to extend/duplicate.
C. Replace the projector with another known-good one and try again.
D. Replace the video card on the machine that is plugged in to the projector, as it has gone bad.

B. Check the display settings on the computer and set them to extend/duplicate.

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Which of the following is a method that can be used to securely connect a remote user’s laptop to a corporate server?

A. WAN
B. VPN
C. SSL
D. DHCP

B. VPN

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A technician is inspecting a projector that is displaying fuzzy images. Which of the following actions would provide the BEST solution? A. Adjusting the lens B. Changing the filter C. Replacing the video cable D. Reseating the lamp

A. Adjusting the lens

An end user discovered that the touch-screen features on a Windows device have stopped working. Which of the following should a technician check? A. Performance monitor B. Tablet/PC settings C. System configuration D. Display settings

B. Tablet/PC settings

Which of the following network services allows a networked device to always be assigned the same IP address based on the device's MAC address? A. DHCP B. LOAP C. UTM D. DNS

A. DHCP

A technician was called in to look at a user's PC. The user reported the PC was very sluggish. The HDD light on the PC was constantly on without blinking. The PC itself was slow receiving input and took a very long time to load the OS. The technician also noticed updates had failed. Which of the following is MOST likely the cause of these issues? A. The hard disk drivers have been corrupted. B. The HDD cables need reseating. C. A RAID disk failed. D. The HDD has no free space.

D. The HDD has no free space.

A user entered a help desk ticket stating the latest calendar updates have not appeared on the user's corporate mobile device for several days, even though updates do appear on the user's laptop. Which of the following actions will MOST likely enable calendar alerts? A. Checking that the ringer volume on the device is high enough to be audible. B. Ensuring the corporate password is saved correctly in the calendar application. C. Installing a third-party calendar application and synchronizing it with the corporate calendar. D. Remotely wiping the mobile device and reinstalling all applications.

B. Ensuring the corporate password is saved correctly in the calendar application.

A new version of Windows was released and a piece of software vital to the engineering department will not run on the new version. Which of the following is the BEST option to enable this department to be able to continue using this software? A. Do not upgrade any workstations within the organization. B. Upgrade all workstations and provide a virtual environment for the legacy software. C. Upgrade all workstations except those used by the engineering department. D. Purchase new workstations for the engineering department.

B. Upgrade all workstations and provide a virtual environment for the legacy software.

A technician is replacing a computer with a connected point-of-sale system using a 9-pin serial adapter. The new computer does not have a 9-pin serial port. Which of the following ports can an adapter be installed on in order to connect to the point-of-sale system? A. HDMI B. Bluetooth C. USB D. Lightning

C. USB

Which of the following network types would be used in a server room to connect virtual servers to high-speed storage? A. WAN B. PAN C. MAN D. SAN

D. SAN

A user takes a tablet to a technician because the cursor on it keeps drifting. The technician notices the screen does not appear to be damaged. Which of the following is the MOST likely cause of the cursor issue? A. The screen is physically damaged. B. The screen rotation is incorrect. C. The touch-pen battery is depleted. D. The screen needs to be recalibrated.

D. The screen needs to be recalibrated.

A user reports issues with a smartphone after dropping it. The icons on the screen all look normal, but when the user touches the email icon, for example, nothing happens. Which of the following is MOST likely the cause? A. Digitizer issues B. Overheating C. Broken screen D. Malware

A. Digitizer issues

A technician is tasked with upgrading a laptop's RAM. Which of the following steps should the technician take FIRST? A. Confirm that both the current and new memory are from the same brand. B. Run a diagnostic test on the current memory. C. Verify the memory requirements of the motherboard. D. Connect an electrostatic discharge strap.

C. Verify the memory requirements of the motherboard.

A technician is configuring a new CAD workstation that has four large hard drives. The workstation will be used to edit large, critical files, so the storage configuration should be both fast and redundant. Which of the following RAID levels BEST meets these requirements? A. 0 B. 1 C. 5 D. 10

D. 10

A startup is looking to immediately expand its data center but does not have the personnel or space to manage everything internally. The organization has multiple small offices and remote users with large computational and storage-solution requirements. Funding is not an issue for the company. Which of the following can BEST accomplish the company's goals? A. SaaS B. IaaS C. ISP D. SDN

B. IaaS

A technician receives a ticket that states a mobile payment device is having issues with its contactless payment feature. The device is not detecting payment options. Which of the following is MOST likely the cause of the issue? A. NFC B. Bluetooth C. Wi-Fi D. Lightning adapter

A. NFC

A user wants a second monitor installed on a laptop. The VGA/DVI or HDMI cables have already been connected. Which of the following should the technician do to configure the laptop to show both screens. A. Power cycle the laptop. B. Plug in the monitor to the USB port. C. Adjust the monitor display settings. D. Power cycle the monitor.

C. Adjust the monitor display settings.

Which of the following allows all VMs in a virtual environment to have RAM allocated for use? A. Measured service B. Containerization C. Synchronization D. Resource pooling

D. Resource pooling

Which of the following 802.11 standards supports both 5GHz and 2.4GHz channel frequencies? A. 802.11a B. 802.11ac C. 802.11b D. 802.11g

B. 802.11ac

A hardware technician is configuring a laptop, and the network administrator requires the network settings to be static. The technician successfully pings the servers by IP address but cannot ping the UNC path. Which of the following is the cause of this issue? A. Domain Name System B. Gateway C. Subnet D. IP address

A. Domain Name System

An organization is looking to upgrade the processing ability for its computers. Most users report that whenever multiple applications are being utilized, the system's response time slows down drastically. When only one application is open, the response time is acceptable. Which of the following should be upgraded FIRST? A. SSD B. CPU C. HDD D. RAM

D. RAM

Client-side virtualization guest machines have security requirements similar to physical machines, but they also need to ensure separation from other guest machines. Which of the following BEST describes this client-side guest security requirement? A. Isolation B. Authentication C. Hardening D. Authorization

A. Isolation

A user connects a smartphone to a laptop. Which of the following types of networks has the user created? A. PAN B. MAN C. WLAN D. LAN

A. PAN (Personal Area Network)

Several users who share a multifunction printer in an office have unintended, thin, vertical lines that cover the entire height of every page printed from the printer. Which of the following steps should a technician complete in order to MOST likely resolve this issue? A. Replace the printer paper with a new ream. B. Clear the print spooler on each computer. C. Reinstall the printer driver on each computer. D. Perform the drum-cleaning procedure.

D. Perform the drum-cleaning procedure.

Which of the following should the data center hardware technician implement to ensure maximum uptime for customers' virtual machines? A. Line conditioner B. AC voltage regulator C. Uninterruptible power supply D. Cloud storage backup

C. Uninterruptible power supply

A technician needs to improve a workstation's overall response time for frequently used applications and data without removing the current hard drive. Which of the following storage devices should the technician install to BEST accomplish the objective? A. M.2 B. SAS C. HDD D. SCSI

A. M.2

A technician is setting up a device to use two-factor authentication. Which of the following meets this requirement? A. Thumbprint/retinal scan B. Password/password C. Password/thumbprint D. Password/PIN

C. Password/thumbprint

A user brings an older laptop to the help desk and reports issues with the keyboard. Upon inspection, the technician does not see any external damage but notices that many keystrokes do not register in a word processor. The laptop works fine when the technician tests it with an external keyboard. Which of the following actions would MOST likely resolve the issue? A. Disable the sticky keys feature. B. Clean the keyboard. C. Reset the BIOS settings to default. D. Charge the laptop.

B. Clean the keyboard.

An administrator is configuring a corporate-owned smartphone for a new manager. The company requires the ability to wipe the phone's data remotely in the event of loss or theft and the capability to approve applications installed on the phone. Which of the following tools would BEST meet this need? A. Tethering to a corporate-owned laptop B. WPA2-Enterprise wireless C. Corporate enterprise email D. Mobile device management

D. Mobile device management (MDM)

A user reports that printed receipts have black smudges over the entire image. The text is still present but is very dark and sometimes illegible. Which of the following are the MOST likely cause and solution for the printer issue? A. The ribbon is jammed and is rubbing on the paper. Clear the bad ribbon and feed it through properly. B. The printed is too hot. Adjust the temperature down and retry printing. C. The printer is loaded with the wrong type of paper. Replace the receipt paper with carbon paper. D. The blue ink cartridge was loaded with black ink. Put in the correct ink and clean the printhead.

B. The printed is too hot. Adjust the temperature down and retry printing.

A developer is requesting permission to utilize client-side virtualization. The developer would like to write code in a setting isolated from other infrastructure to avoid negative impacts of experimental code. Which of the following provides the BEST solution for the developer? A. Cross-platform functionality B. Software compatibility C. Test case development D. Sandbox environment

D. Sandbox environment

The IT department at an insurance brokerage needs to acquire laptops that have built-in fingerprint readers in order to create a more secure environment. Which of the following would be the MOST secure way to implement the fingerprint readers? A. Grant all registered employees access to each machine. B. Restrict device access to only the user to whom the laptop is assigned. C. Limit device access to departments and guest users. D. Give each team member a USB drive that bypasses the reader to allow guest users to log in.

B. Restrict device access to only the user to whom the laptop is assigned.

A laptop's external webcam software is running, but it shows no image or video. Which of the following should a technician perform FIRST? A. Research new webcam firmware. B. Restart the computer and run system diagnostics. C. Reseat the webcam. D. Reinstall the webcam software and drivers.

C. Reseat the webcam. (unplug then plug back in / turn it off then back on again)

An engineer is experiencing unexpected reboots on a graphics workstation when rendering complex 3-D models. The workstation is configured with a 115V power supply that is rated at 200W and connected to a UPS. The central processing unit contains 16 hyperthreaded cores, and a discrete graphics solution utilizing an 8-pin power connector is installed in a PCI Express x16 slot. Which of the following indicates where the technician should begin troubleshooting? A. The UPS, as 115V is insufficient for the configuration and should be increased to 220V. B. The power supply, as 200W is insufficient when the GPU is heavily tasked. C. The graphics card, as it is the component that triggers the unexpected reboots. D. The motherboard, as only standard PCI slots should be used for high-end graphics cards, not PCI Express slots.

B. The power supply, as 200W is insufficient when the GPU is heavily tasked.

Which of the following technologies can allow multiple networks to traverse a switch? A. VLAN B. VRRP C. VPN D. DHCP

A. VLAN (Virtual Local Area Network)

An end user reports that the time and date on a desktop resets after shutdown, and subsequently, the device reboots. The next day, the desktop does not load the OS and is stuck at a black screen with the following message: Date/Time Not Set - Press F1 to Run Setup - Which of the following would be the BEST action to take next? A. Change the motherboard. B. Reseat the motherboard power connections. C. Replace the CMOS battery. D. Restore the BIOS to factory default settings.

C. Replace the CMOS battery.

A user reports that a PC occasionally fails to boot. The user reboots the PC, but the performance is degrading. The technician hears a strange, repetitive, ticking noise coming from the PC. Which of the following should the technician do FIRST? A. Try to extract data. B. Reseat the RAM modules. C. Inspect the fan. D. Check the CD tray.

A. Try to extract data.

A technician is upgrading a faulty motherboard that was ordered by an end user for an old, high-end desktop computer. However, the technician is unable to install the CPU into the socket. Upon closer inspection, the technician notices the pins on the CPU do not line up with the socket. Which of the following would be the best course of action for the technician to take NEXT? A. Try to set as many pins as possible. B. Install an adaptor to create a universal socket. C. Verify the socket type and manufacturer. D. Find a compatible motherboard for the CPU.

C. Verify the socket type and manufacturer.

A remote user reports connectivity issues with the local internet provider. Even after a technician reboots the modem supplied by the ISP, the issue persists. Which of the following would BEST establish the connection in minimal time? A. Radio frequency ISP B. Neighbor's WI-FI C. Mobile hotspot D. Fiber optic

C. Mobile hotspot - the key to this answer is "in minimal time". A company can set this up really quick.

A company wants to give third-party developers access to the corporate network through desktop environments that the company can control. Which of the following can BEST achieve these requirements? A. Sandbox B. VDI C. Private cloud D. SaaS

B. VDI (Virtual Desktop Infrastructure)

Which of the following utilizes TCP ports 20/21 and transfers data in cleartext? A. SNMP B. SSH C. FTP D. Telnet

C. FTP (File Transfer Protocol)

A user's mobile phone gets really hot to the touch and does not retain a charge. The user also reports that the phone is very slow, especially while charging. Which of the following is MOST likely causing these symptoms? A. Broken charging port B. Digitizer failure C. CPU overheating D. Defective battery

D. Defective battery - often times you may see the case swell up and this is something you should take care of ASAP.

A Microsoft Windows user is preparing to work in another country and needs to comply with corporate policy for data protection when copying files to portable media. Which of the following situations would MOST likely satisfy this requirement? A. A USB 3.1 flash drive with BitLocker to Go installed. B. An SD memory card with NTFS C. An xD memory card with ext3 D. A portable hard drive with FAT32

A. A USB 3.1 flash drive with BitLocker to Go installed. - keep in mind "corporate policy for data protection"

Which of the following network devices is used to separate broadcast domains? A. Switch B. Wireless access point C. Router D. Hub

C. Router

A user submits a help desk ticket regarding a smartphone that will no longer accept its charging cable. The assigned technician notices the phone does not have a protective case, and the user constantly transports the phone in a pocket. The technician attempts to use a secondary charger, but the cable falls out of the phone. Which of the following is the MOST likely cause of the issue? A. The phone requires a firmware update to address charging issues. B. The charge port contains foreign objects, such as lint. C. The phone's battery has swelled, preventing the utilization of the charge port. D. The phone has experience water damage, thus the battery is not charging.

B. The charge port contains foreign objects, such as lint.

A network administrator was notified that laptop users are unable to access or ping any network resources on the corporate network. Which of the following should the network administrator check FIRST? A. DHCP B. AAA C. DNS D. ARP

A. DHCP

Upon booting a workstation, a technician hears a distinct clicking sound after power is applied to the motherboard. Which of the following would MOST likely be the cause? A. RAID B. SSD C. S.M.A.R.T D. HDD

D. HDD - this is the spinwheel drive making the sound. An SSD won't make that sound

An organization has some computers running macOS and some computers running Windows. The computers running macOS also need to run a piece of software that is only available on Windows. Which of the following BEST describes the solution for running Windows software on a computer running macOS? A. Operating system spoofing B. Remote software provisioning C. Indirect software implementation D. Cross-platform virtualization

D. Cross-platform virtualization - this can be done with a Virtual Machine

A field technician has been dispatched to a site with an internet outage. Upon arriving, the technician discovers that the POTS (Plain Old Telephone Service) lines are not working as well. Which of the following technologies is the site MOST likely using? A. Fiber B. Cable C. DSL D. Satellite

C. DSL - instructor said he's never seen this on a test.

A company wants to use client-side virtualization for application testing. Which of the following configurations would BEST support this goal? A. CPU 2.5GHz - 4 cores 16GB DDR4 RAM 1TB SSD B. CPU 3.2GHz - 1 core 16GB DDR4 RAM 4TB SSD C. CPU 2.5GHz - 2 cores 16GB DDR4 RAM 4x 1TB HDD RAID 5 D. CPU 3.2GHz - 4 cores 8GB DDR4 RAM 500GB HDD

A. CPU 2.5GHz - 4 cores 16GB DDR4 RAM 1TB SSD - Best suited for Virtual Machines

A user submitted a ticket to report an issue with a new printer that is no longer accepting new print jobs. The technician verifies the printer is on and notices the printer LCD screen has the following error message: Paper Jam, Jam in Fuser. Which of the following is the MOST efficient next step the technician should complete? A. Apply a maintenance kit to the printer. B. Check the printer paper path to locate any obstructions. C. Turn the printer on and off to see if the error clears. D. Replace the fuser.

B. Check the printer paper path to locate any obstructions.

A technician unboxed a new computer, plugged it in to a UPS, and connected the requested peripherals. The computer lights and fans turn on, but the technician hears three loud, consecutive beeps during boot. Which of the following actions will remediate the issue? A. Replacing the power supply B. Replacing the UPS C. Changing the CMOS battery D. Reseating the RAM

D. Reseating the RAM - there's lights on a computer that will blink in a certain patterns or colors and if you check the manufacturer's information, it will tell you what the error code means.

An IT manager discovered that hundreds of pages of printed materials are being recycled each day because the materials are left on the printer tray instead of being picked up by users. Which of the following BEST prevent this waste? A. Send friendly reminders to not print unnecessarily. B. Enable duplex printing to reduce paper utilization. C. Bill each department for the excess material cost. D. Require a code or badge before releasing a print job.

D. Require a code or badge before releasing a print job. - a lot of companies do this for security reasons.

An online retailer wants to save money and is considering migrating to the public cloud so capacity can be added during the peak shopping season and automatically removed when the peak is over. Which of the following BEST describes this aspect of cloud computing? A. Rapid elasticity B. Metered utilization C. Shared resources D. High availability

A. Rapid elasticity

A technician is receiving reports that the entire office sporadically loses network connectivity throughout the day. The technician determines the root cause to be EMI. Which of the following cable mediums would be the MOST cost effective without sacrificing system performance? A. Coaxial B. Shielded Cat 6 C. Plenum Cat 5e D. Multimode fiber

B. Shielded Cat 6

A organization maintains various record types, including health and criminal justice records. Which of the following cloud environments is the organization MOST likely to use to limit the attack surface? A. Public B. Hybrid C. Community D. Private

D. Private (Cloud) - "on-premises" where you control all of the hardware yourself

A colleague has a laptop that has been working as expected for several years, but the laptop now has a small bulge in the bottom casing and overheats occasionally while plugged in to a wall outlet. The MOST likely component that needs to be replaced is the: A. Power adapter. B. Battery. C. System fan. D. Hard drive.

B. Battery

A company just bought a printer capable of automatically printing on both sides of the paper. After installation, however, the technician can only print on both sides of the paper manually. Which of the following should the technician do to fix the issue? A. Install the most recent firmware upgrade available for the printer. B. Contact the vendor for a hardware replacement. C. Reinstall the printer software and drivers, and then restart the printer. D. Read the installation manual and configure duplex settings.

D. Read the installation manual and configure duplex settings.

A small office has a wireless network with several access points for roaming laptop use. Users occasionally report that the wireless connection drops or becomes very slow. Users have confirmed that this issue only happens when connected to the office wireless network. Which of the following would MOST likely be the cause? A. Hidden SSID B. Device interference C. Ethernet port flapping D. High ISP latency

B. Device interference

Which of the following cloud models maintains access, even when a local internet outage occurs? A. Private B. SaaS C. Community D. Public

A. Private (Cloud) - You have access to it physically (most of the time)

A laptop has been returned for a screen repair. The owner insists the screen is broken, but occasionally a faded image is able to be seen in very bright settings on the desktop. Which of the following steps should the repair technician take FIRST? A. Replace the graphics card. B. Replace the screen, as the customer insists. C. Recommend the usage of an external display instead. D. Ensure the backlight is functioning as expected.

D. Ensure the backlight is functioning as expected.

A laptop PC user is reporting issues with the hard drive. A filesystem check shows that all files are accessible and the filesystem is clean. After the check, the PC still issues a hard drive error message. Which of the following is the MOST likely cause of the error? A. S.M.A.R.T failure B. IOPS failure C. DIMM failure D. RAID failure

A. S.M.A.R.T failure

A technician is tasked with installing additional RAM in a desktop computer. Which of the following types of RAM is MOST likely to be used? A. SODIMM B. DDR3 C. ECC D. VRAM

B. DDR3

While implementing a non-carrier grade wireless backhaul, a technician notices the current channel selection is extremely polluted with various RF signals. Upon performing a spectral analysis, the technician discovers a channel containing almost no RF pollution. Unfortunately, the technician is unable to select that channel. Which of the following is the MOST likely reasons for this issue? A. The channel is reserved for licensed band use. B. The channel selection is defective, contact the manufacturer. C. The channel must be unlocked by the vendor. D. The device requires a firmware update to unlock the channel.

A. The channel is reserved for licensed band use.

A user's computer is not receiving a network connection. The technician confirms that the connection seems to be down and looks for the user's port on the patch panel. The port and patch panel are not labeled. Which of the following network tools should the technician use to identify the port? A. Network tap B. Punchdown tool C. Toner probe D. Crimper

C. Toner probe

A user, who is attempting to give a presentation via a projector in a conference room, reports that the projector has video but no audio. Which of the following will MOST likely resolve the issue? A. Changing the input on the projector to VGA B. Changing the output on the PC to DVI C. Modifying the projector's refresh rate D. Utilizing an HDMI connection

D. Utilizing an HDMI connection

A customer reports that a computer is never able to reach more than 100Mbps transfer data rate, even when using a Gigabit LAN card. While troubleshooting, the technician notices the network cable needs to be replaced. Which of the following cable categories is limiting the transfer speed? A. Cat 5 B. Cat 5e C. Cat 6 D. Cat 6a

A. Cat 5

While using a popular videoconferencing program, the user selects a webcam, but the software is unable to open the webcam. The webcam was working the previous day. Which of the following should be done to address the issue? A. Close other video software and retry. B. Adjust the conference software to a compatible resolution. C. Switch the video from the webcam to conference mode. D. Reseat or replace the webcam.

A. Close other video software and retry.

A user failed to gain access to a building's entrance after security measures at the entrance were upgraded last week. The company implemented the 13.56MHz frequency short band, and users can now utilize their mobile devices to authenticate. Which of the following has to be enable for the mobile device to authenticate? A. Bluetooth B. Biometrics C. NFC D. PIN

C. NFC

Which of the following standards supports MIMO technology? A. 802.11a B. 802.11b C. 802.11g D. 802.11n

D. 802.11n

A technician powers on a PC and its monitor and sees the following error message: No input signal detected - The display lights on the computer are on. Which of the following is a possible solution? A. Changing the BIOS settings B. Changing the connector setting on the monitor C. Checking the power plug on the monitor D. Checking the power plug on the PC

B. Changing the connector setting on the monitor

Which of the following components enables the input on a mobile device's touch screen? A. OLED B. Digitizer C. Inverter D. CMOS sensor

B. Digitizer

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