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Comptia A+ 220-801 > Comptia A+ 220-801 Chapter 6 > Flashcards

Comptia A+ 220-801 Chapter 6 Flashcards

1
Q

Define Sneakernet ? pg 264

A

Refers to the channel by which electronic information is transmitted from one computer to another by physically carrying it stored on a floppy disk, CD or other removable medium.

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2
Q

What s a network? pg 264

A

links two or more computers together to communicate and share resources.

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3
Q

Describe centralized processing? pg 265

A

(all programs ran on the same computer)

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4
Q

What is a WAN? pg 267

A

(Wide Area Network)A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs).

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5
Q

What is a MAN? pg 268

A

(metropolitan area network) (MAN). A MAN is generally defined as a network that spans a city or a large campus.

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6
Q

What is a File Server? pg 269

A

Servers that provide files to users on the network.

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7
Q

Define a dedicated server? pg 269

A

is assigned to provide specific applications or services

for the network and nothing else.

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8
Q

What is a workstation computer? pg 270

A

Workstations are the computers on which the network users do their work, performing activities such as word processing, database design, graphic design, email, and other office or personal tasks.

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9
Q

What is another name for a Workstation Computer? pg 270

A

Client Computers

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10
Q

Why would you install a NIC Card?

A

You must install a network interface card (NIC), a special expansion card that allows the PC to talk on a
network.

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11
Q

Know the difference between workgroups and domains

A

The main difference between workgroups and domains is how resources on the network are managed.
In a workgroup:
All computers are peers; no computer has control over another computer.
Each computer has a set of user accounts. To use any computer in the workgroup, you must have an account on that computer.
There are typically no more than ten to twenty computers.
All computers must be on the same local network or subnet.

In a domain:
One or more computers are servers. Network administrators use servers to control the security and permissions for all computers on the domain. This makes it easy to make changes because the changes are automatically made to all computers.
If you have a user account on the domain, you can log on to any computer on the domain without needing an account on that computer.
There can be hundreds or thousands of computers.
The computers can be on different local networks.

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12
Q

What is a LAN? (Local Area Network) pg 265

A

A data communications network which is geographically limited allowing easy interconnection of terminals, microprocessors and computers within adjacent buildings.

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13
Q

Understand the difference between a patch cable and a crossover cable.

A

A patch cable is a network cable that is used to connect a PC to a hub, switch, or router. A crossover cable is used to connector two PCs into the simplest network possible.but on the other side cross cable is just different then patch and used to connect different devices.

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14
Q

Their are two types of twisted pair cabling. What are the two names?

A

shielded twisted-pair (STP)

unshielded twisted-pair (UTP)

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15
Q

What is a PAN?

A

Personal Area Network

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16
Q

What are the 7 Layers of the OSI Model? pg 282

A
  1. Physical layer,
  2. Data Link layer
  3. Network layer
  4. Transport layer
  5. Session layer
  6. Presentation layer
  7. Application layer
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17
Q

What is the OSI Modle and what does the acronym OSI ?

pg 280

A

Short for Open System Interconnection, an ISO standard for worldwide communications that defines a networking framework for implementing protocols in seven layers. Control is passed from one layer to the next, starting at the application layer in one station, proceeding to the bottom layer, over the channel to the next station and back up the hierarchy.

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18
Q

Define a NIC Card? pg 283

A

network interface card (NIC) provides the physical interface between computer and cabling. It prepares data, sends data, and controls the flow of data. It can also receive and translate data into bytes for the CPU to understand. NICs come in many shapes and sizes.

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19
Q

For two computers to send and receive data, the cards must agree on several things: pg 284

A

The maximum size of the data frames
The amount of data sent before giving confirmation
The time needed between transmissions
The amount of time to wait before sending confirmation
The speed at which data transmits

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20
Q

what is the difference between Half-duplex

communication and Full Duplexing? pg 285

A

Half-duplex communication means that between the sender and receiver, only one of them can transmit at
any one time.
Full-duplex communication, a computer can send and receive data simultaneously.

21
Q

What is an advantage of Full Duplex over Half Duplex?

A

The main advantage of full-duplex over half-duplex communication is performance.

22
Q

Why would you have Shielded Network Cable? pg 288

A

The difference is that STP has an extra layer of braided foil shielding surrounding the wires to decrease electrical interference.

23
Q

UTP Cables come in eight grades to offer different levels of performance and protection against electrical interference. Name the 8 grades of Cables ?pg 289

A

Category 1,2,3,4,5,5e,6,6a

24
Q

Each of these cables has a maximum transmission of how far? pg 289

A

100 Meters.

25
Q

If you are running CAT6 over 10GBaseT how much distance can you get? pg 289

A

55m

26
Q

How fast can a CAT6 cable transmit data? pg 289

A

up to 10Gbps

27
Q

What is a patch cable? pg 290

A

is an electrical or optical cable used to connect (“patch-in”) one electronic or optical device to another for signal routing. Devices of different types (e.g., a switch connected to a computer, or a switch to a router) are connected with patch cords.

28
Q

What is a Crossover cable?

A

Crossover cables are used to connect a computer to a computer, hub to hub, switch to switch, hub to switch, or computer directly to a router.

29
Q

What does a Fiber Optic Cable consists of and what are the speeds of transmission rates? pg 291

A

It consists of a thin, flexible glass or plastic fiber surrounded by a rubberized outer coating. 100Mbps to 10Gbps

30
Q

What are the 3 most popular types of Fiber Connectors? PG 292

A 
straight tip (ST), 
subscriber connector (SC)
local connector (LC)
31
Q

Which type of tool is handy in helping you to make network cables? pg 294

A

A crimper is a very handy tool for helping you put connectors on the end of a cable.

32
Q

If you need to trace a wire in a wall from one location to another. Which tool would you use?

A

toner probe

33
Q

Any device that acts as a communication hub to allow users of a wireless network to connect to a wired LAN. pg 298

A

access point

34
Q

is a device used to link several computers together pg 298

A

hub

35
Q

In this OSI Model which layer does the bridge operate in ?

A

Data Link layer (Layer 2) of the OSI model.

36
Q

Define what a router is? pg 300

A

Routers are highly intelligent devices that connect multiple network types and determine
the best path for sending data.

37
Q

What is known as the intermediary network? pg 300

A

This intermediary network is known as a demilitarized zone (DMZ).

38
Q

What is VoIP? pg 301

A

Voice over Internet Protocol (VoIP) is a term that describes technology that delivers voice communications over the Internet.

39
Q

What is the enhancement if CAT 5e over Cat 5? pg 289

A

The enhancement over CAT-5 is that the four twisted pairs of copper wire are physically separated and contain
more twists per foot. This provides maximum interference protection

40
Q

How many net work typologies are their and what are they?

pg 275

A 
Bus
Star
Ring
Mesh
Hybrid
41
Q

What is the Bus Topology? pg 277

A

Bus Topology is the simplest of network topologies. In this type of topology, all the nodes (computers as well as servers) are connected to the single cable (called bus), by the help of interface connectors. This central cable is the backbone of the network and is known as Bus (thus the name). Every workstation communicates with the other device through this Bus.

42
Q

Which topology is the most complex? pg 278

A

mesh topology

43
Q

What are the advantages and disadvantages of a bus topology? pg 279

A

Advantage- Cheap. Easy to install.

Disadvantage -Difficult to reconfigure. A break in
the bus disables the entire network.

44
Q

What are the advantages and disadvantages of a star topology? pg 279

A

Cheap. Very easy to install and reconfigure. Fault tolerant.

More expensive than bus

45
Q

What are the advantages and disadvantages of a ring topology? pg 279

A

Efficient. Easy to install.
Reconfiguration is difficult. Very
expensive

46
Q

What are the advantages and disadvantages of a mesh topology? pg 279

A

Best fault tolerance.

Reconfiguration is extremely difficult, extremely expensive, and very complex.

47
Q

What are the advantages and disadvantages of a hybrid topology? pg 279

A

Gives a combination of the best features of each topology used.
Complex (less so than mesh,however).

48
Q

Common network cables are covered with a plastic called what? pg 286

A

polyvinyl chloride (PVC).

49
Q

When coax cable was popular for networking, there were two standards that had fairly high use: What were they called? pg 286

A

RG-8 (thicknet) and RG-58A/U (thinnet).

Comptia A+ 220-801 (20 decks)

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