Assessment test questions (2) Flashcards
Which of the following is a company that provides direct access to the Internet for home and business computer users?
ASP
ISP
DNS
ISP
An Internet service provider (ISP) provides direct access to the Internet. ASP is a programming language. DNS resolves host names to IP addresses. DNP is not a computer networking acronym
What is the data throughput provided by one ISDN bearer channel?
16 Kbps
56 Kbps
64 Kbps
64 Kbps
An ISDN B (bearer) channel provides 64 Kbps data throughput. A home-based BRI ISDN provides two B channels
Which of the following technologies was developed for the IoT and communicates exclusively in the 800 MHz to 900 MHz range?
Bluetooth
Zigbee
Z-Wave
Z-Wave
Zigbee and Z-Wave were developed specifically for the Internet of Things (IoT). Zigbee can communicate in the 2.4 GHz range as well as the 800 MHz to 900 MHz range. Z-Wave can communicate only in the 800 MHz to 900 MHz range
One of your network users was recently caught at work browsing pornographic websites. Which of the following servers could be installed to prohibit this activity?
Web
Security
Proxy
Proxy
A proxy server can be configured to block access to websites containing potentially objectionable material. Web servers host websites. There is no specific security server, although there are authentication servers, which provide security. A DNS server resolves host names to IP addresses
Google Docs is an example of which type of cloud service?
SaaS
IaaS
PaaS
SaaS
Google Docs is software, so it is an example of Software as a Service (SaaS). IaaS is Infrastructure as a Service. PaaS is Platform as a Service. GaaS is neither a test objective nor currently a cloud service type
Which type of software is required to run client-side virtualization on your home network?
Process replication
Hyperthreading
Hypervisor
Hypervisor
The hypervisor is the key piece of software needed for virtualization. Terminal emulation, process replication, and hyperthreading are not related to client-side virtualization
You are installing a new display for a laptop. Which LCD component is responsible for providing brightness?
Backlight
Inverter
Screen
Backlight
The backlight provides light to the LCD screen. The inverter provides power to the backlight, and the screen displays the picture. Digitizers take physical input (such as touch) and turn it into electronic data
Your laptop has 4 GB of installed memory and uses shared video memory. If the video card is using 512 MB, how much is left for the rest of the system?
4 GB
3.5 GB
512 MB
3.5 GB
If the laptop is using shared video memory, then the system memory is shared with the video card. If the video card is using 512 MB (half a gigabyte), then there is 3.5 GB left for the system
A user says that their keyboard backlight was working but now it’s not. What’s the easiest way to try to get it working again?
Change the BIOS setting.
Replace the backlight.
Use the keyboard function key.
Use the keyboard function key.
Most systems with a keyboard backlight have a keyboard function key to turn the backlight on or off—try that first. If not, there is likely a setting in Windows Control Panel, or possibly the BIOS. Replacing the backlight is the last resort
When using a capacitive touch screen on a mobile device, what is the most common tool used to input data?
Keyboard
Stylus
Finger
Finger
Capacitive touch screens react to slight changes in electrical charges. The human finger is used as an input device for capacitive touch screens
Which technology used by e-readers gives them longer battery life than tablets?
Lithium-polymer battery
Low-power backlight
Electrophoretic ink
Electrophoretic ink
E-readers use electrophoretic ink, also known as E Ink. E Ink uses less energy than other LCD displays, prolonging battery life
When setting up two NFC devices, what is the name of the mode that allows the two devices to transmit data to each other?
Emulation mode
Peer-to-peer mode
Reader/writer mode
Peer-to-peer mode
Card emulation mode, reader/writer mode, and peer-to-peer mode are the three valid NFC communication modes. For two devices to transmit to each other, they will use peer-to-peer mode
Which of the following protocols can be used in close range to transfer data between a mobile device and a computer system or to allow media to stream from the mobile device to an audio system?
SMTP
Bluetooth
Pegasus
Bluetooth
Bluetooth allows you to pair a mobile device to a computer or to a device such as an automotive sound system or headset. Data can be transferred between devices, and media can be streamed from the mobile device. SMTP is an email protocol. NFC is for short-distance data transfers, but not media streaming. Pegasus is not a computer communications protocol
Which term refers to copying data between a mobile device and a computer system to mirror such things as contacts, programs, pictures, and music?
Calibration
Pairing
Synchronization
Synchronization
Synchronizing a mobile device with a computer system allows you to mirror personal data between the devices, regardless of which one contains the most current data. Calibration refers to matching the device’s and user’s perceptions of where the user is touching the screen. Remote wipes allow you to remove personal data from a lost or stolen device. Pairing is what must be done in Bluetooth for two Bluetooth devices to connect and communicate
You want to create and send encrypted emails from your smartphone. What do you need to use?
POP3
SMTP
S/MIME
S/MIME
The Secure/Multipurpose Internet Mail Extensions (S/MIME) standard for public key encryption is used to create and read encrypted emails. POP3 and SMTP are standard email protocols. VPNs create a private network over a public network, but they do not encrypt email content
A user calls to report that his laptop is not booting up. What is the first step you should take?
Quarantine the system.
Identify the problem.
Establish a plan of action to resolve the problem.
Identify the problem.
In the best practice methodology to resolve problems, the first step is to identify the problem. Quarantining the system is not necessary. Establishing a theory of probable cause is the second step, and establishing a plan of action is the fourth step
You are troubleshooting a network issue. What feature do switches most likely have to help troubleshoot connectivity issues?
Beep codes
Indicator lights
Log entries
Indicator lights
Switches and other connectivity devices have indicator lights to help indicate when things are working normally and when something isn’t working right. There are no port toggles, and switches don’t use beep codes. A switch might make a log entry into an event logger, but this is less likely than it having indicator lights
Your laser printer has recently starting printing vertical white lines on documents it prints. What is the most likely cause of the problem?
The printer driver is faulty.
There is toner on the transfer corona wire.
There is a scratch on the EP drum.
There is toner on the transfer corona wire.
White streaks on printouts are most likely caused by toner on the transfer corona wire. Vertical black lines are caused by a scratch or a groove in the EP drum. If the fuser were not heating properly, toner would not bond to the paper, and you would have smearing. Faulty printer drivers will cause garbage to print, or there will be no printing at all
A Desktop computer has recently started exhibiting slow performance, particularly when opening and saving files to the hard drive. What should you try first?
Replace the hard drive.
Remove old files and applications to free up disk space.
Delete and reinstall the OS.
Remove old files and applications to free up disk space.
Hard drive performance can slow down if the drive gets short on space, particularly under 10 percent of free space. First, try removing old files and applications to free up disk space. If that doesn’t resolve it, then defragment. If neither of those work, you could have a failing hard drive
A network cable has not been working properly. Another technician suggests testing the resistance on the cable. Which tools may be capable of doing this? (Choose two.)
Loopback plug
Multimeter
Cable tester
Tone generator and probe
Multimeter
Cable tester
A multimeter is specifically designed to test for electrical characteristics, so it would be the best tool to choose. Cable testers are for verifying that a cable works properly; some are capable of testing resistance. A loopback plug is for testing the ability of a network adapter to send and receive. A tone generator and probe is used to trace a cable from one location to another
