Comptia A+ 1001

Which two of the following describe an IPv6 address?

128-bit address

A user is configuring an email client application and decides to use the TCP/IP suite protocol that will store all messages on the email server so that they can be synchronized across a laptop, a smartphone, and a web email client. This protocol will store the email messages on the email server until the user explicitly deletes them. Which of the following TCP/IP port numbers will the client application typically use while using this protocol to contact the email server?

143

Given that your Windows workstation has Automatic Private IP Addressing (APIPA) implemented using default settings, which of the following TCP/IP addresses could be automatically assigned to the system should your DHCP server go down or become inaccessible?

169.254.1.26

An administrator configures a server to run the TCP/IP suite protocol that allows users to download files contained in specific directories on the server and also protects access to those files by requiring user authentication. Which of the following TCP/IP port numbers allow this protocol to work properly?

20

Assuming all other processor specifications are the same, which of the following processor sizes will consume the least amount of power?

32 nm

To assist a user, a help desk technician is able to take advantage of a Windows proprietary network protocol that allows the technician to open a graphical interface to connect with the user's Windows computer. Which of the following TCP/IP port numbers is the default port used by this protocol?

3389

While working on a Windows workstation, you've enabled Remote Desktop. Which of the following ports MUST be opened in the server's firewall to allow remote clients to access the desktop?

3389

While making an online bank transaction, a customer checks to see that the web browser is displaying a lock icon that indicates that an encrypted TCP/IP suite protocol is being used. Which of the following TCP/IP port numbers does this protocol typically use when the browser encrypts its communications with the bank's web server?

443

Which wireless standard can stream data at a rate of up to 54 Mbps using a frequency of 5 GHz?

802.11a

A sales person typically carries a laptop computer to several off-site customer meetings each day, but needs the flexibility to quickly attach other peripherals and charge the laptop battery while at their office desk. Which of the following laptop feature would BEST meet these requirements?

A USB-to-RJ45 dongle

Your laser printer prints a vertical black line on every page. You change the toner cartridge, but the problem does not go away. What is the MOST likely problem?

A corona wire is dirty

A technician is tasked with preparing a conference room so that at least 20 guests will be able to wirelessly connect laptop computers to the company network. Which of the following network devices would be the BEST choice for this connectivity?

Access point

After working without problems for a couple of years, your computer has begun to lock up. You suspect that it is a thermal issue, but you can't find any component that is not functioning correctly. You have not replaced the CPU or installed any new devices. The CPU cooling fan and the power supply fan are working properly. The lock-ups are happening with increasing frequency. Which of the following is the MOST common condition that might explain these symptoms?

An accumulation of dust has gradually built up

Brian is a new employee on the development team. As part of his job, he runs three virtual machines (VMs) on his computer. Each VM runs a different Windows license. After a while, Brian notices that his VMs are not running as fast as he thought. He has asked you to explore the issue. Which of the following BEST describes why Brian's VMs are running slowly?

Brian's computer has a single-core CPU configured to use hyper-threading.

Which of the following types of printers heats the ink in its print head to print?

Bubble jet (inkjet)

You have just finished upgrading the CPU in your desktop system. After running for about 15 minutes, the system spontaneously shuts down. Which steps should you take to begin troubleshooting the issue?

Check the CPU fan power.

One of your customers is still using an old dot matrix printer. While printing, the customer noticed that the text was light or faint. A new print head was installed, but the documents are still faint. Which of the following should you do to troubleshoot the MOST likely cause?

Check the gap between the printer head and the paper.

A technician is replacing a SOHO router and has configured DHCP to assign private IP addresses to hosts on the local network. These hosts can communicate with each other, but users can't browse the internet. Which of the following changes to the SOHO router is MOST likely to restore internet connectivity?

Configure the SOHO router for NAT.

The integrated mouse, the small monitor, and the compact nature of the keyboard are impeding your work when you use a notebook, but you still need a system that is portable if necessary. What is your best option?

Connect an external keyboard, mouse, and monitor when necessary

As the IT technician for your company, you need to ensure that IP addresses are automatically assigned to hosts while at the same time preventing the same address from being assigned twice. Which of the following services would be BEST to use?

DHCP

You are the IT technician for your company. Which of the following mechanisms would BEST allow you to resolve a hostname into its associated IP address?

DNS

You want to implement name resolution on the Linux workstations in your company. Which protocol will you use to do this?

DNS

Which TCP/IP configuration parameter identifies the router that is used to reach hosts on remote networks?

Default gateway

A user calls the help desk stating that the touchpad on a laptop does not work. Which of the following actions would BEST help the technician diagnose the problem?

Disable the touchscreen

A user wants to use a laptop to display a presentation on a large TV monitor that has an HDMI connection. Which of the following laptop ports or connections can be used to add this display device?

DisplayPort using a DisplayPort-to-HDMI cable

Which type of printer uses an inked ribbon?

Dot matrix

A customer who uses a Windows computer recently purchased an inkjet printer from your store. She is now calling to complain that the colors in the photos she printed on her new printer don't match the colors in the original photos created by the photo shop. Which of the following actions will MOST likely resolve the issue?

Download and install the latest printer drivers., Instruct the customer to upgrade to a color laser printer

A technician has configured a client computer's network interface with addresses of servers where the client will send requests for translating Fully Qualified Domain Names (FQDNs) to IP addresses and IP addresses to FQDNs. Which of the following TCP/IP suite protocols is used by the client to perform the request and also used by a server to respond to these requests?

Dynamic Host Configuration Protocol (DHCP)

A technician is installing a new SOHO wireless router in a home office. The customer wants to secure the wireless network so only a smartphone, tablet, and laptop can connect. Which of the following router settings should the technician change?

Enable MAC filtering

You want to allow your users to download files from a server running the IP protocol. You want to protect access to the files by requiring user authentication to access specific directories on the server. Which IP protocol should you implement to provide this capability?

FTP

You are using a crimper to attach an RJ45 connector to a Cat 6 UTP cable. You need to use the T568A standard to connect the individual wires to the connector. Which wire should be connected to pin 1?

Green with white

Google Cloud, Amazon Web Services, and Microsoft Azure are some of the most widely used cloud storage solutions for enterprises. Which of the following factors prompt companies to take advantage of cloud storage?

Growing demand for storage

Which component within a tablet device measures acceleration horizontally and vertically at the same time?

Gyroscope

When a user rotates a mobile device, the operating system changes the screen orientation so that the display remains upright to the user. Which of the following technologies is uses to detect this device movement?

Gyroscope Wi-Fi

Which protocols are used on the internet to transmit webpages from web servers to web browsers running on client workstations?

HTTP

After arriving in a new city today, a traveling sales team member calls you stating that his wireless connection no longer works. He has checked the wireless configuration, and he knows it to be correct because it was working yesterday. What should you do first?

Have him verify that the wireless card's hardware switch is in the On position

Which of the following correctly describe the most common format for expressing IPv6 addresses?

Hexadecimal numbers

When using Intel chips, which of the following features BEST allows a single processor to run two threads in parallel instead of processing single threads linearly?

Hyper-threading

You want to use your Windows workstation to browse the websites on the internet. You use a broadband DSL connection to access the internet. Which network protocol must be installed on your workstation to do this?

IP

A technician is configuring the static TCP/IP settings on a client computer. Which of the following configurations are needed for internet communications?

IP address including a subnet mask (IPv4) or subnet prefix length (IPv6)

You have been asked to recommend a printer that will be used in a travel agency. The printer will be used to print airline tickets. Each ticket has four pages (multi-part carbon-based forms), and the same information must show up on all four pages with a single pass of the printer. Which printer type would you recommend?

Impact

You have recently issued new mobile phones to the sales team in your company. Each phone has the ability to store and transmit encrypted information for such things as making payments at a checkout counter. Which of the following technologies is being used in these phones?

Infrared transmitters

You have installed a new computer with a quad-core 64-bit processor, 6 GB of memory, and a PCIe video card with 512 MB of memory. After installing the operating system, you see less than 4 GB of memory showing as available in Windows. Which of the following actions would MOST likely rectify this issue?

Install a 64-bit version of the operating system., Flash the BIOS

A portable computer connected to a printer with an infrared interface works fine inside your office. However, when you go outside, it works sporadically. Which of the following would BEST resolve this issue?

Install a Gamma Ray Spectrometer (GRS) to shield the interface.

You are setting up a small network in your office with one Windows server and 50 Windows workstations. You want to spend as little time as possible configuring the workstations with IP addressing information. What should you do?

Install and configure the DHCP service on your server.

You have a computer with a dual-core 64-bit processor that uses the x86-x64 instruction set. You want to install the 32-bit application on the computer. Which of the following BEST describes the action you should perform?

Install the application normally

You are currently managing a few Apple iPad devices that run the iOS operating system. Which of the following BEST describes the architecture used by this device?

Intel64

A user calls to report that she is experiencing intermittent problems while accessing the wireless network from her laptop computer. She can access the network from her usual office, but today, she is trying to access the wireless network from a conference room, which is across the hall and next to the elevator. Which of the following is the MOST likely cause of her connectivity problem?

Interference is affecting the wireless signal

What are the main types of cloud services?

Internal cloud services

Which of the following best describes how a switch functions?

It connects multiple cable segments or devices and forwards frames to the appropriate segment.,

A technician must press a cable connector's retaining tab to remove a faulty fiber optic network cable. Which of the following connectors does the cable use?

LC

Your company needs to print a lot of high-quality black-and-white text documents. These documents need to be printed as quickly and inexpensively as possible. The printer must also have the capacity to perform duplex printing. Which of the following printers BEST meets the printing requirements for your company?

Laser Thermal

Which of the following is the MOST likely symptom of a dirty drum or roller in a laser printer?

Lines or splotches repeated at regular intervals on the print job.

After installing two memory modules, you power on the system to check for errors. You find that the BIOS program recognizes only one of the memory modules. While troubleshooting this issue, which of the following is BEST to try first?

Make sure that both modules are seated properly in their slots., Scan for new devices in Device Manager; enable any disabled memory modules

You have just finished upgrading the 250 W power supply in your desktop computer to a 450 W power supply. Now the BIOS doesn't recognize one of the hard disk drives in the system during POST. Which of the following troubleshooting steps is the BEST to try first?

Make sure that the hard disk is connected to the power supply.

You recently upgraded the processor in your laptop computer to a faster processor. The computer runs, but after you use it for several minutes, it shuts down unexpectedly. Which of the following steps would you MOST likely perform first to troubleshoot this issue?

Make sure the case fans are plugged in.

You have just built a new system from scratch. You turn the computer on, but the system boot fails and sounds a beep code. Which of the following is the MOST likely cause?

Memory not installed or not detected, Incompatible memory was installed

You are in the process of configuring a new computer. The motherboard has four memory slots and supports dual-channel memory. You install two memory modules. When you boot the computer, the BIOS recognizes both modules, but the memory is not configured to run in dual-channel mode. What should you do?

Move the modules to the correct motherboard slots.

Which of the following is the most common method for removing RAM from a motherboard?

Move the tabs holding the RAM out of the way; pull straight up to remove the RAM

Which of the following refers to placing two processors on a single processor chip or die?

Multi-core

Which of the following networking devices or services is LEAST likely to be compatible with VPN connections?

NAT

Which of the following protocols is non-routable and requires another protocol to enable internetwork communications?

NetBIOS

Which network component connects a device to the transmission media and allows it to send and receive messages?

Network interface card

You have a DVD-ROM disc with no label, and you want to know if it has any important files on it. You insert the DVD-ROM into your optical media drive, then you double-click the drive letter for the optical drive to see the contents of the disc. If the DVD-ROM is not a valid disc, which error message will you see?

No Media

A technician connects two network switches using a twisted pair cable. Neither switch supports auto-uplinking. Which of the following identifies the TIA wiring standard required on each end of the cable?

One end must be T568A, and the other must be T568B

Which of the following protocols can your portable computer use to connect to your company's network via a virtual tunnel through the internet?

PPTP

Which of the following best describes the Platform as a Service (PaaS) cloud computing service model?

PaaS delivers everything a developer needs to build an application onto the cloud infrastructure., PaaS delivers software applications to the client either over the internet or on a local area network.

Which of the following is an error detection technique that can detect errors with only one bit?

Parity

The human resources department wants to give gifts away at the company's summer party. They would like to have an assortment of fitness tracker wristbands, smartwatches, smart glasses, and virtual reality headsets. They have been trying to locate these on the internet, but have been unsuccessful. Which of the following types of mobile devices should you tell them to search for?

Phablets

A technician is installing a network-enabled smart home control system in a SOHO. To access the system from the internet, which of the following configurations is MOST likely required on the SOHO router?

Port forwarding

Which component in a laser printer prepares the photosensitive drum for writing by causing it to receive a negative electrostatic charge?

Primary corona

You are purchasing a PC system that will be used as a file and print server in a small business. Which of the following hardware selection criteria is the MOST important for this system?

RAID 1+0 array

A company has subscribed to a cloud service that offers cloud applications and storage space. Through acquisition, the number of company employees quickly doubled. The cloud service vendor was able to add cloud services to these additional employees without requiring hardware changes. Which of the following cloud concepts does this represent?

Rapid elasticity

Vera has brought her notebook computer to you for repair. After listening to her describe its symptoms, you hypothesize that the notebook may have a malfunctioning keyboard. Which of the following steps can you take to BEST determine whether the keyboard needs to be replaced?

Recalibrate the keyboard's pressure sensors

Your computer has one single core processor installed. The motherboard supports processors with up to four cores. You want to upgrade your computer to a quad-core system. Which of the following will be part of your configuration?

Replace the existing processor

You work for a company based in Phoenix, Arizona, which is a very hot and dry area. Several people in the research department have reported that even though their files are printing to their laser printer correctly, a much lighter copy of the same text also prints within 2 to 3 cm of the original text. Which of the following would MOST likely fix this type of ghosting image?

Replace the imaging drum, as it is probably at end of life., Use a heavier weight paper to avoid paper shift.

Your system crashes at various times: sometimes on startup, sometimes when running a software application, sometime when a certain group of applications is running. You suspect a malfunctioning CPU, but none of the common issues seem to be present. You have not configured overclocking. There is no overheating. The CPU is seated correctly and locked into its socket. What can you do to definitively determine if the CPU is causing the system crashes?

Replace the suspect CPU with a known good CPU of the same make and model., Downgrade to a CPU that has fewer cores and is less demanding on your system resources.

When you print from your laser printer, the paper contains faint images from previous printouts. Which of the following components is MOST likely the cause?

Rubber scraper

A technician is tasked to add a valid certificate to a mobile device so that encrypted emails can be opened. Which of the following email protocols is being used?

S/MIME

An administrator is asked to configure all network file sharing devices so that both Windows and Mac OS computers can access files. Which of the following network protocols should the administrator enable?

SMB CIFS AFP

After receiving several complaints from the employees in your company, you start to troubleshoot a laser printer. After a short while, you have concluded that the most probable cause is a dirty drum. Which of the following is the MOST logical reasons for this conclusion?

Spots at regular intervals on the page Garbage characters on the page

Susan works in the research and development department. She has recently purchased a large high-speed external drive and has attached the drive to her computer using a USB cable. Her drive requires a minimum bandwidth of 400 Mbps and at least 900 milliamps (mA) to function. Although the correct drivers are installed, the drive is not functioning. To troubleshoot the problem, she has connected her drive to her coworker's computer where the drive functions properly. No additional cables are required for this drive. Which of the following is the MOST likely reason Susan's external hard drive is not working?

Susan has connected her drive to a USB 2.0 port, which does not have enough power for her drive.

An employee complains that every time they turn their computer off, the computer's time is set to 12:00 p.m., and the date is set back to January 1, 1990. Which of the following is the MOST likely cause of this anomaly

The CMOS battery has failed.

You work at a computer repair store. You just upgraded the processor (CPU) in a customer's Windows-based computer. The customer purchased the latest AMD Phenom II processor, and you installed it in the computer. When you power the computer on, you only see a blank screen. Which of the following is MOST likely causing the computer displaying a blank screen?

The CPU is not supported by the BIOS., The heat sink and fan were not installed correctly.

You're troubleshooting a malfunctioning notebook computer system. The user has indicated that the LCD screen suddenly became dark and difficult to read while he was downloading a large file through his wireless network card while the system was plugged in at his desk. You've checked the system and determined that the backlight has stopped working. Which of the following is the MOST likely cause?

The cold cathode fluorescent lamp has burned out and needs to be replaced.

Which of the following identifies the prefix component of an IPv6 address?

The first four quartets of an IPv6 address

Which of the following identifies the Interface ID component of an IPv6 addres

The last 64 bits of an IPv6 address

When you try to boot your computer, it hangs after POST. When you access the UEFI setup program, you see that the date is several years behind, and the time is set to 12:01 a.m. Which of the following is the MOST likely cause of this behavior?

The motherboard battery has failed.

You are the IT administrator for your company. You have several users who want to work from home by connecting to a server running at the corporate headquarters. Your manager has asked you to keep costs to a minimum as you provide computers for this environment. Which of the following types of PCs would work BEST for these remote users?

Thin client

Your company relocated you to their United Kingdom office in London. You brought your personal computer with you and are in the process of setting it up. Your computer was previously configured to receive 110 V AC, but the electricity in London uses 230 V AC. Which of the following would allow your computer to run on 230 V AC?

Toggle the voltage switch on the power supply to the different voltage.

You are in the process of purchasing several new computers to replace broken or outdated computers. After much research, you have determined to purchase computers that use AMD sockets. Which of the following BEST describes an AMD and why you would select this option?

Typically, an AMD uses a Pin Grid Array (PGA) socket type.

You are a software developer, and you are creating a multimedia streaming application. Data will be streamed from your streaming server to streaming clients over IP networks. Which transport protocol should your application use to send data between the clients and the server?

UDP

Your motherboard has two memory slots and supports a maximum of 8 GB of RAM. After installing two 4 GB modules and booting your system, you find that Windows only recognizes 3.5 GB of RAM. Which of the following would MOST likely fix this issue?

Upgrade to a 64-bit version of Windows

You need to connect a monitor that provides an HDMI port and a VGA port to a video adapter in a PC system that uses a DVI-D connector. Which of the following options would provide the BEST display quality at the lowest cost?

Use an adapter to connect the monitor HDMI port to the DVI-D connector on the PC

Aubrey, an employee in the marketing department, has told you that when she prints to her laser printer, faint ghost-like images are being printed on her new page. As an IT administrator, you check with other employees who use the same printer and find that they are not experiencing the same problem. Which of the following would be the BEST fix for this issue?

Use preprinted paper that has been printed with laser-compatible printer toner

For the past several days, the print jobs from the inkjet printer are missing colors and leaving gaps. Which of the following will MOST likely resolve the problem?

Use the automatic print head cleaning feature.

The servers for the company are all virtual machines and hosted on the same hypervisor. You need to keep users in all other departments from accessing the virtual servers used by the finance department. Which of the following technologies should you use to logically isolate the network?

VLANs

You have subscribed to a cloud-based service to synchronize data between your mobile device and your PC. Before allowing the data to be synchronized, this service uses a process where the cloud service and the client on the mobile device verify each other's security certificates. What is this process called?

Virtual private network

You are configuring a firewall to allow access to a server hosted in the demilitarized zone of your network. You open IP ports 80, 25, 110, and 143. Assuming that no other ports on the firewall need to be configured to provide access, which applications are most likely to be hosted on the server?

Web server and email server

You have had several employees call the help desk where you work, complaining that they are not able to reach the www.widgets.com server. To help troubleshoot this issue, you decide to run a variety of commands. Which of the following commands is MOST likely to return the IP address of the desired server?

ping www.widgets.com, tracert www.widgets.com