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Free CompTIA A+ 220-801 practice test, CompTIA A Plus 220 801 Test 5. This is a practice exam for IT professionals studying for the CompTIA A+ 220-801. A+ covers the fundamentals of computer technology, installation and configuration of PCs, laptops and related hardware, and basic networking.
Which of the following properly describes the use of the DHCP protocol as it relates to a TCP/IP network?
Translates between user friendly network names and network addresses
Provides mapping between layer 2 and layer 3 addresses
Negotiates network access using a knocking algorithm
Provides a unique layer 3 address to network devices
Which of the following stores data from frequently used main memory locations?
Tertiary Memory
ECC Memory
CPU Cache
RAM
Of the following video cable types, which would be the MOST likely to signal degradation over long distances?
VGA
DisplayPort
DVI
HDMI
You have been asked to purchase new cabling for a POTS connection. Which of the following connectors could be used?
BNC
RJ-11
F
RJ-45
A user recently installed a new printer to replace their older Inkjet printer. After installation any documents they print instead show garbled and unreadable characters. Which of the following should a technician try first?
Install the proper driver
Perform an RMA
Re-seat the ink cartridges
Verify the printer cable is properly connected
Which of the following wireless standards requires line-of-sight in order to operate?
Bluetooth
WiFi
IR
RF
Infrared (IR) light requires line of sight in order to properly function. Infrared is most commonly used in TV remotes. WiFi, Bluetooth and Radio Frequencies (RF) do not requires LoS and can penetrate physical objects such as walls and ceilings.
Of the following devices, which one would be MOST likely to be placed in a home network's DMZ?
Backup solution server
Gaming server
Print Server
All of the above
A network Demilitarized Zone (DMZ) is a less-secure network designed to be used by external users (Internet users). The only option that should ever be used by an external user is the Gaming Server. Your Backup Server and Print Server would not be publicly accessible.
Which of the following devices could be considered the LEAST secure?
Hub
Firewall
Router
Switch
When a Hub receives a packet or frame it broadcasts the data out all ports (except the port it received it on). Because of this a Hub can become a large security risk as any network device is capable of receiving and recording any and all network data.
Which of the following peripheral devices will allow multiple PC's to share a common display or set of displays?
Repeater
Router
KVM
Wireless mouse/keyboard
Which of the following printer types does NOT use ink?
Inkjet
Daisy Wheel
Thermal
Dot Matrix
Inkjet, Dot Matrix and Daisy Wheel printers all use ink to output characters or images. Thermal Printers apply heat to thermal paper in order to produce images or characters. Additionally, laser printers (not an option) use toner instead of ink.
A user wants to limit access to their SOHO network by only allowing certain devices to access it. Which of the following will provide the MOST restrictive access?
Disable SSID Broadcast
Enable MAC Filtering
Turn off DMZ capabilities
Disable DHCP
Of the following devices, which one converts between digital signals and analog signals?
Switch
Hub
Modem
Router
After upgrading their Internet connection to gigabit internet, a user is reporting speeds no higher than 100 Mbps. The user was told by a technician at their ISP that the issue is on the user's home network. The user stated they only need speeds higher than 100 Mbps on a single desktop computer. Which of the following would most likely solve this problem?
Configure their wireless router to use the 5 GHz frequency band
Upgrade the desktop's NIC driver to support 1Gbps
Check and Upgrade the router, NIC and Ethernet cabling to support the higher speeds
Upgrade their wireless router to use 802.11g
Although the user's internet access is capable of up to 1 Gbps (Gigabit per second), their home network still only supports Fast Ethernet (100 Mbps). 802.11g is only capable of 54 Mbps and switching to the 5 GHz doesn't provide enough information to determine the network speed. The only realistic scenario is to check the router, NIC and ethernet cabling to ensure all are capable of supporting Gigabit Ethernet speeds (or higher).
Which of the following network tools will BEST help a technician trace a network cable's location?
Toner probe
Multimeter
Loopback plug
Cable tester
During boot up a PC shows an error stating that the System Date and Time is not set. Which of the following will solve this issue?
Reset BIOS settings
Restart the computer
Replace CMOS battery
Verify network connectivity to the local NTP server
The CMOS (complementary metal-oxide semiconductor) provides power to a motherboard in order to track the time while a computer is powered off. If the CMOS battery dies or malfunctions the PC will not be able to track the system time.
Which of the following options is a volatile RAM type that can be used in a dual-channel configuration?
DRAM
SDRAM
Flash
DDR
DDR RAM (Double Data Rate - Random Access Memory) was designed to use two parallel channels to communicate with a motherboard's memory controller. DRAM and SDRAM use a single channel to communicate with the memory controller. While Flash Memory is capable of using multiple channels, it is non-volatile as it retains data without constant power.
Which of the following options properly describes the difference between a plenum rated cable and a non-plenum rated cable?
Higher flexibility
Additional noise reduction in large groups of cables
Reduced production of hazardous fumes in the event of a fire
Reduction in cross-talk
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