Exam Cram B - CompTIA A+ 1001 Flashcards
Which of the following servers is responsible for resolving a name such as dprocomputer.com to its corresponding IP Address?
Web Server FTP Server DNS Server Proxy Server Syslog Server
DNS Server
Which of the following statements describes the advantages of using the Dynamic Host Configuration Protocol (DHCP)? (Select the Two Best Answers)
IP Addresses can be managed from a Central Location.
The Network Speed can automatically adjust based on the type of traffic being generated.
The Host File on the computer can be validated for proper entries.
Media Access Control addresses can be changed.
Computers can automatically get new addressing when moved to a different network segment.
IP Addresses can be managed from a Central Location.
Computers can automatically get new addressing when moved to a different network segment.
Which of the following storage technologies is used by hard disk drive?
Magnetic
Optical
Impact
Solid-State
Magnetic
On which type of computer is RAM the most important?
Gaming PC
Virtualization Workstation
AV Editing Workstation
Standard Thick Client
Virtualization Workstation
A Client brings in a printer that is giving a paper-feed error. Which of the following is the most likely cause?
Separation Pad
Developing Rollers
Paper Tray
Pickup Rollers
Pickup Rollers
Which Protocol uses Port 389?
SMTP
POP3
LDAP
HTTPS
LDAP
What is the max distance at which a Class 2 Bluetooth device can receive signals from a Bluetooth access point?
100 m
10 m
5 m
1 m
10 m
- Which of the following wireless networking standards operates at 5 GHz only? (Select the Two Best Answers)
- 11a
- 11b
- 11g
- 11n
- 11ac
- 11a
- 11ac
Explanation: 802.11a operates at 5 GHz only; so does 802.11ac.
Incorrect answers: 802.11b and g operate at 2.4 GHz. 802.11n operates at either 2.4 or 5 GHz. The IEEE 802.11 wireless standards are collectively known as 802.11x. However, there is no actual 802.11x standard; it was not used in order to avoid confusion. 802.11x is instead a variable that you may sometimes see that refers to two or more 802.11 technologies.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 63). Pearson Education. Kindle Edition.
- Which of the following types of RAM has a Peak Transfer rate of 21,333 MB/s?
DDR4-1600
DDR4-2133
DDR4-2400
DDR4-2666
DDR4-2666
Explanation: DDR4-2666 has a peak transfer rate of 21,333 MB/s. It runs at an I/O bus clock speed of 1333 MHz and can send 2666 megatransfers per second (MT/s). It is also known as PC4-21333. The math: To figure out the data transfer rate of DDR4 from the name “DDR4-2666,” simply multiply the 2666 by 8 (bytes) and solve for megabytes: 21,333 MB/s. To figure out the data transfer rate of DDR4 by the consumer name “PC4-21333,” just look at the number within the name and add “MB/s” to the end. To figure out the data transfer rate when given only the I/O bus clock speed (for example, 1333 MHz), multiply the clock speed by 2 and then multiply that number by 8 and solve for megabytes: 1333 MHz × 2 × 8 = 21,333 MB/s. However, keep in mind that a RAM module such as DDR4-2666 is often inaccurately referred to as a 2666-MHz RAM module, but really that is the MT/s.
Incorrect answers: DDR4-1600 has a peak transfer rate of 12,800 MB/s; it is also known as PC4-12800. DDR4-2133 has a peak transfer rate of 17,066 MB/s; it is also known as PC4-17000. DDR4-2400 has a peak transfer rate of 19,200 MB/s; it is also known as PC4-19200.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (pp. 63-64). Pearson Education. Kindle Edition.
Which of the following types of printers uses a print head, ribbon, and a tractor feed?
Laser
Impact
Inkjet
Thermal
Impact
Several users on your network are reporting that a network printer, which is controlled by a print server, is not printing. What is the first action you should take to fix the problem?
Have the affected users restart their computers.
Replace the USB cable.
Clear the Print Queue.
Reinstall the Printer Drivers on the affected user’s computers.
Clear the Print Queue
- Which of the following is a possible symptom of a failing CPU?
CPU is beyond the recommended voltage range.
Computer won’t boot.
BIOS reports low temperatures within the case.
Spyware is installed into the browser.
CPU is beyond the recommended voltage range.
Explanation: If the CPU is running beyond the recommended voltage range for extended periods of time, it can be a sign of a failing CPU. The problem could also be caused by overclocking. Check in the UEFI/BIOS to see whether or not the CPU is overclocked.
Incorrect answers: If the computer won’t boot at all, another problem might have occurred, or the CPU might have already failed. Low case temperatures are a good thing (if they aren’t below freezing!), and spyware is unrelated to this issue.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 65). Pearson Education. Kindle Edition.
Which of the following cable types is not affected by EMI but requires specialized tools to install?
Cat 6
STP
Fiber Optic
Coaxial
Fiber Optic
Setting an administrator password in the BIOS accomplishes which of the following?
Prevents a user from rearranging the boot order
Prevents a user from reading email
Prevents a virus from infecting the MBR
Prevents an attacker from opening the case
Prevents a user from rearranging the boot order
Which of the following functions is performed by the external power supply of a Laptop?
Increases voltage
Stores power
Converts DC power to AC power.
Converts AC power to DC power.
Converts AC power to DC Power.
How many pins would you see in a High-Quality Printhead on a Dot-Matrix Printer?
24
15
8
20
24
Explanation: High-quality dot-matrix printheads can come in 9, 18, or 24 pins, with 24 being the highest quality.
Incorrect answers: 15-pin is a number associated with the power connection of SATA as well as VGA connectors. 8-pin is associated with PCIe video cards and RJ45 plugs. 20-pin is the older standard for ATX main power connections, though today they are usually 24-pin.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 66). Pearson Education. Kindle Edition.
- What is an LCD display’s contrast ratio defined as?
Power Consumption
Display Resolution and Brightness
The Brightest and Darkest Outputs
Power Savings
The Brightest and Darkest Outputs
Explanation: Contrast ratio is the brightness of the brightest color (measured as white) compared to the darkest color (measured as black). Static contrast ratio measurements are static; they are performed as tests using a checkerboard pattern. But there is also the dynamic contrast ratio, a technology in LCD displays that adjusts dynamically during darker scenes in an attempt to give better black levels. It usually has a higher ratio, but it should be noted that there is no real uniform standard for measuring contrast ratio.
Incorrect answers: Power consumption deals with the number of watts that the display uses. Display resolution is the number of pixels on the screen, measured horizontally by vertically. Displays often have a brightness setting as well as a contrast setting. The brightness setting is used to increase or decrease the amount of light put out by the display. Power savings is another concept altogether and can be adjusted by enabling the power savings feature of the operating system, ultimately using fewer watts and conserving energy while increasing the life span of the display.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 66). Pearson Education. Kindle Edition.
Which of the following tools can protect you in the case of a Surge?
Torx Screwdriver
Antistatic Strap
Voltmeter
Antistatic Mat
Antistatic Strap
Which of the following connectors can have audio and video pass through it?
VGA
RGB
DVI
HDMI
HDMI
- Which of the following devices limits network broadcasts, segments IP address ranges, and interconnects different physical media?
Switch
WAP
Firewall
Router
Router
Explanation: A router can limit network broadcasts through segmenting and programmed routing of data. This is part of a router’s job when connecting two or more networks. It is also used with different media. For example, you might have a LAN that uses twisted-pair cable, but the router connects to the Internet via a fiber-optic connection. That one router will have ports for both types of connections.
Incorrect answers: A switch connects multiple computers on the LAN; it does not limit IP-based network broadcasts. However, the switch does not segment by IP address; it communicates with computers and segments the network via MAC addresses. Also, the switch normally uses one type of media—twisted pair, connecting to RJ45 ports. However, it is possible that the switch might connect to another switch by way of a specialized fiber-optic connector. A wireless access point (WAP) connects the computers on the wireless LAN (WLAN). It often has only one connection, a single RJ45 port. A hardware-based firewall usually connects to the network via RJ45; regardless, it has only one or only a few connections. It doesn’t deal with routing or broadcasts; instead, it prevents intrusion to a network.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 67). Pearson Education. Kindle Edition.
Which of the following technologies can be used to make wireless payments?
Bluetooth
IR
NFC
LTE
NFC
You just upgraded the CPU. Which of the following issues can make your computer shut down automatically after a few minutes? (Select the Best Answer)
Wrong CPU Driver
Wrong Voltage to the CPU
Incorrect CPU has been installed.
The CPU has overheated.
The CPU has overheated.
Which of the following addresses is a valid IPv4 address for a Network Host?
- 0.0.1
- 254.0.0/16
- 17.58.254
- 10.15.7
172.17.58.254
You want to upgrade memory in your computer. Which of the following is user-replaceable memory in a PC?
CMOS BIOS DRAM SRAM ROM
DRAM
Which of the following IP addresses is private?
- 58.254.169
- 255.10.41
- 31.1.1
- 169.0.1
172.31.1.1
Which of the following is the local loopback IPv6 address?
127.0.0.1
::1
192.168.0.0
FE80::/10
::1
Which of the following statements is correct concerning IPv6 addresses?
They cannot be used with IPv4
They are supported by all routers.
They represent addressing using 128 bits.
They require fiber-optic connections.
They represent addressing using 128 bits.
- Which of the following operating CPU temperatures is typical?
60 Fahrenheit
60 Celsius
72 Fahrenheit
72 Celsius
60 Celsius
Explanation: A typical operating temperature for CPUs is 60° Celsius. Keep in mind that the operating range may be above or below that. Many computers hover around 30° to 35° Celsius.
Incorrect answers: On the other hand, 72° Celsius becomes much less typical, even if the user is overclocking the system. A temperature of 60° Fahrenheit is equal to 15.5° Celsius. A processor will not run that cold (but it would be pretty efficient if it did!). A temperature of 72° Fahrenheit falls within the range of room temperature and is what you should set the room temperature for computers to run at their best.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 69). Pearson Education. Kindle Edition.
Which of the following printer technologies should be used to print payroll checks on paper forms that have carbon backing?
Impact
Laser
Inkjet
Thermal
Impact
- Which of the following is NOT a configuration that can be made in the UEFI/BIOS?
Boot Sequence Temperature Thresholds Overclocking Install Drives Intrusion Detection
Intrusion Detection
Explanation: You cannot install drivers to the UEFI/BIOS. Drivers are software that allows the operating system to communicate with hardware; they can be configured in the Device Manager in Windows.
Incorrect answers: The rest of the answers can be configured in the BIOS. The boot sequence (also known as boot priority or boot order) allows you to select which device will be booted off first. (The hard drive is the most secure.) Temperature thresholds allow you to set alerts and possibly shut down the system if the CPU runs too hot. Overclocking occurs when the CPU’s voltage is raised and the speed is increased. Overclocking is not recommended, but if you do configure it, you should set temperature thresholds. Intrusion detection can be enabled and will log if a person opened the computer case.
L., Prowse David. CompTIA A+ Practice Questions Exam Cram Core 1 (220-1001) and Core 2 (220-1002) (p. 69). Pearson Education. Kindle Edition.
Which of the following traits and port numbers are associated with POP3? (Select the Two Best Answers)
Receives inbound email on Port 110 Receives inbound email on Port 25 Sends outbound email on Port 110 Sends outbound email on Port 25 Receives inbound email on Port 995 Sends outbound email on Port 587
Receives inbound email on Port 110
Receives inbound email on Port 995
Which type of cable should be used to connect a laptop directly to a PC?
Cat 6 Patch Cable
Parallel Cable
Rolled Cable
Cat5e Crossover Cable
Cat 5e Crossover Cable