Review Questions | The A+ Exams Guide: (Exam 220-301), (Exam 220-302) (TestTakers Guides)

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Which of the following can connect, or ‘network' two computers together? (Choose Three)
1. A 6-pin mini-DIN
2. A serial cable
3. 10Base2
4. A parallel cable
Correct Answers = B, C, and D.

You can connect two computers together with a serial cable, an Ethernet thinnet 10Base2 cable, or a parallel cable. A 6-pin mini-DIN connector is used to connect a PS/2 mouse or keyboard to a computer.
How does a parallel port transmit data to a device?
1. One bit at a time
2. One byte at a time
3. Serially
4. By use of a parallelogram
Correct Answer = B.

A parallel port uses parallel transmission methods to transmit or send data one byte at a time to a peripheral device. A serial port transmits data one bit at a time.
If two devices cannot send and receive data and information simultaneously, they are using which form of data transmission?
1. Full duplex
2. Quarter duplex
3. Half duplex
4. Half simplex
Correct Answer = C.

With half-duplex transmission, data can be transmitted in both directions, but can only be transmitted in one direction at a time. Full duplex is simultaneous transmission where data or voice can be transmitted at the exactly the same time.
A parallel printer cable has a different connector on each end. Name the two types of connectors on a parallel printer cable. (Choose Two)
1. DB 25-pin male connector
2. DB 9-pin connector
3. An RS232C-compliant cable
4. 36-pin Centronics connector
Correct Answers = A and D.

A parallel port on the back of a computer system is a female DB-25 connector that accepts a DB 25-pin male connector on one end of a parallel cable. The other end of a parallel cable has a 36-pin male Centronics D-shell connector that connects to a Centronics connector located on the back of a printer or device. A DB 9-pin connection is used for connecting a modem or serial mouse to the back of a system. RS232C is a serial port standard.
A connector that has two levels of 15 total pins is which type of cable?
1. Monitor cable
2. Modem cable
3. Serial port
4. Game port
Correct Answer = D.

A game or MIDI female port on the back of system has two levels of 15 total pins that accept a male connector with two levels of 15 total pins.
Which is the fastest technology available for printers?
1. SCSI
2. Parallel
3. USB
4. Serial
Correct Answer = A.

The fastest technology available for printers today is SCSI.
Which technology has the fastest data transfer rates?
1. IEEE 1394
2. Parallel
3. USB
4. A fast crossover cable
Correct Answer = A.

FireWire is much faster than USB or parallel. It supports data transfer rates of 100Mbps to 400Mbps.
Which motherboard form factors uses a 5-pin DIN connector for keyboard connections? (Choose Two)
1. ATA
2. ATX
3. AT
4. XT
Correct Answers = C and D.

Both AT and XT motherboard form factors use a 5-pin DIN connector. The ATX form factor uses a 6-pin mini-DIN connector, more commonly known as a PS/2 connector, for keyboard connections. ATA is a hard drive adapter interface standard.
Name the minimum category cable type that can be used to support 100BaseT.
1. Category 2
2. Category 3
3. Category 4
4. Category 5
Correct Answer = D.

Category 5 UTP supports 100BaseT or 100BaseTX. Category 2, 3, and 4 cable types do not support 100BaseT.
Name the minimum category cable type that can be used to support 10BaseT.
1. Category 3
2. RJ-11
3. Category 4
4. Category 5
Correct Answer = A.

The minimum cable type needed to support 10BaseT is Category 3. An RJ-11 phone connector is used for earlier categories of UTP to connect a modem to a typical phone jack, or your phone to a phone jack.
Which of the following is an IEEE standard for parallel Type C?
1. Standard Centronics 36-pin
2. Mini-36-pin Centronics connector
3. FireWire (IEEE 1394)
4. DB-25 male
Correct Answer = B.

The newest addition to the IEEE-1284 standard for bidirectional communications and printing is the Type C-Mini-36-pin parallel connector.
Which of the following are associated with parallel printer ports? (Choose Three)
1. Bidirectional
2. IEEE 1284
3. EPP
4. USB
5. Omnidirectional
Correct Answers = A, B, and C.

Parallel printer ports support bidirectional as well as EPP application data transmissions. They are associated with the IEEE 1284 parallel standard that is used to connect a computer to peripheral devices, such as printers.
You are attempting to connect a USB mouse, a USB keyboard, and USB digital camera to your new USB 2.0 compatible laptop system. How many system resources (IRQs) will you need?
1. One
2. Three
3. 1,024
4. You cannot USB 2.0 devices to a laptop
Correct Answer = A.

One system resource (IRQ) will support up to 127 USB devices!
Which of the following IEEE standards addresses FireWire?
1. IEEE 802.11
2. IEEE 1284
3. IEEE 1234
4. IEEE 1394
5. None of the above
Correct Answer = D.

The IEEE 1394 standard references FireWire high-speed serial transmissions of up to 400Mbps (in version 1394a) and 800Mbps (in version 1394b). You'd better know the difference between IEEE 802.11, IEEE 1284, IEEE 1394, and RS232 for the real exam!
What process will a plug-and-play system use to detect connected FireWire-compatible devices?
1. FireWire-N-Play
2. Enumeration
3. Collaboration
4. IRDA Standard 1.1
5. None of the above
Correct Answer = B.

FireWire is plug-and-play compatible and hot-swappable. It also allows up to 63 devices to be connected to one port. A plug-and-play system will use the process known as enumeration to assign an address and auto-detect any FireWire-connected devices.
A network interface card that supports SC or ST connections is an example of which type of technology?
1. FireWire
2. Ethernet
3. Fiber optic
4. IR or IRDA
5. None of the above
Correct Answer = C.

Fiber-optic cables use special ST- and SC-type connectors to attach to NICs and fiber-optic ports. These connectors are precisely crafted and specially designed to suit fiber-optic cable connection requirements.
When a sending host or device uses a transmitter or ‘emitter' to send pulses of light to a receiving host or device, which technology is being implemented?
1. FireWire
2. Ethernet
3. Fiber optic
4. IR
5. RF
6. None of the above
Correct Answer = D

The majority of IR transmissions occur between two computers or a single computer and an infrared-enabled device, such as a printer or PDA. The sending host or device uses an infrared transmitter or ‘emitter,' which sends pulses of infrared light to the receiving host or device, which accepts the pulses with an infrared receiver.
You want to use an IR keyboard with your new desktop system. What must be enabled in order for you to do this?
1. Simplex transmission
2. COM4
3. ECC
4. IR support in your system's BIOS
5. None of the above
Correct Answer = D.

In order for your system to use IR, support must be enabled in your system's BIOS.
What is considered the ‘hub' in a wireless network?
1. Ad-hoc
2. Access point
3. WLAN
4. Receiver
5. None of the above
Correct Answer = B.

Wireless access points are sometimes referred to as transceivers because they have the ability to transmit and receive RF signals. They are the ‘hub' of wireless networks.
Your boss has asked you to implement a wireless network solution for your company. What is the first step you should take before implementing this solution?
1. Site survey
2. Purchase access point and wireless NICs
3. Convert all Ethernet to fiber
4. Activate 128-bit encryption
5. None of the above
Correct Answer = A.

Before you install a wireless network solution into an existing building or between existing buildings (building to building), you should first have a professional site survey conducted by certified RF engineers.
Your boss has asked you to implement a fiber-optic solution for your corporate enterprise. You need a solution for fast data transmission over a very long distance. What fiber-optic solution will you recommend?
1. Double mode
2. Single mode
3. Multi mode
4. Multi homed
Correct Answer = B.

Single-mode fiber optic, also referred to as monomode fiber, is a fiber technology meant for very long-distance data transmissions.
What does multi-mode fiber use to generate signals of light rays, or ‘modes'?
1. Laser
2. Phaser
3. Core illuminator
4. LED
5. None of the above
Correct Answer = D.

Multi-mode fiber uses LEDs to generate signals of light into the core fibers for transmission over fiber media. This mode of fiber is designed to carry many light signal rays, or ‘modes,' at the same time over a shorter distance than single mode.
Which category of UTP uses a 23-gauge conductor wire and is rated for speeds up to 550M or 1,000M?
1. CAT5
2. CAT6
3. CAT5e
4. CAT4b
5. CAT6g
Correct Answer = B.

CAT6 cabling is built using 23-gauge conductor wire. The CAT6 cabling standard is rated up to 550M or 1,000M.

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