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ICT Level 3 LO1-LO3 Flashcards COPY COPY > Connectivity Methods COPY > Flashcards

Connectivity Methods COPY Flashcards

1
Q

What Is A LAN?

A

A local area network (LAN) is a network that connects computers and other devices in a relatively small area, typically a single building or a group of buildings.

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2
Q

3 Advantages Of A LAN?

A
  1. you can share peripherals like laser printers
  2. a file server can be used to store and share documents and files centrally
  3. emails can be sent between computers
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3
Q

3 Disadvantages Of LAN?

A
  1. If a virus gets on a LAN network then it will spread quickly
  2. If The Server Fails then no one can access any files or folders
  3. Building A LAN is expensive due to all computers needing cables or wireless technology
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4
Q

What is Ethernet?

A

A system for connecting a number of computer systems to form a local area network

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5
Q

3 Advantages Of Ethernet?

A
  1. Very Reliable does not fail often
  2. Fast Transfer Speeds
  3. Reduces Data Collisions
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6
Q

3 Disadvantages Of Ethernet?

A
  1. No Way To Prioritise Traffic
  2. Limited Cable Length
  3. 10MBPS for base version of Ethernet
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7
Q

What Is A Token Ring?

A

All Devices Connected in a ring

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8
Q

3 Advantages Of Ethernet?

A
  1. Excellent Performance under high load
  2. Easy Detection and Correction of cable errors
  3. TP (Twisted Pair) Cable Is Cheap
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9
Q

3 Disadvantages of Ethernet?

A
  1. Low Load = Delay in speed
  2. Difficult to configure
  3. If the cable breaks the whole network goes down
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10
Q

What Does WAN Stand For?

A

Wide Area Network

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11
Q

3 Advantages Of WAN?

A
  1. Everyone on the network can access the same data = everyone’s data is updated
  2. Anyone can connect no matter where they are
  3. Good for big business and schools because data can be remotely accessed anywhere.
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12
Q

3 Disadvantages Of WAN?

A
  1. WAN is expensive to setup
  2. WAN’s are not easy to use
  3. Low Bandwidth = Low Speeds
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13
Q

What Is ADSL?

A

Type of DSL broadband communications technology used for connecting to the Internet.

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14
Q

3 Advantages Of ADSL?

A
  1. Most Common Fast Type of connection to the internet
  2. You can talk on the phone whilst using the internet
  3. Speeds are much higher than Dial Up
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15
Q

2 Disadvantages Of ADSL

A
  1. A DSL connection works better the closer you are to the telephone
  2. This service is not available in all locations.
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16
Q

Leased Line What Is It?

A

Leased Line Is a dedicated link. Such as between offices for a big business.

17
Q

Leased Line 2 Advantages?

A
  1. It’s costly – but only carries your data so is guaranteed to give ultrafast speeds
  2. Larger Files get really high bandwidth
18
Q

Leased Line 2 Advantages?

A
  1. Costly

2. Installation can take weeks or even months

19
Q

Definition of a ISDN?

A

allow you to connect to the Internet and transmit digital data over ordinary telephone copper wire as well as other media.

20
Q

ISDN 2 Advantages?

A
  1. high data rate because of digital scheme which is 56 kbps.
  2. SDN takes only 2 seconds to launch a connection
21
Q

ISDN 2 Disadvantages?

A
  1. ISDN is much more expensive than its successor being ADSL

2. More Expensive than DSL and cable

22
Q

What Is WLAN?

A

devices on a WLAN communicate via Wi-Fi.

23
Q

What Is A MAN?

A

covers town or city (bigger than LAN, smaller than WAN).

24
Q

3 Advantage Of MAN?

A

Provides a larger and more controllable computer network,

requires fewer resources compared to LAN

cost effective way of sharing common resources.

25
Q

3 Disadvantage MAN?

A

Difficult to manage the network once it becomes too large

difficult to make the system secure to keep hackers out

requires more cables for connection.

26
Q

What Is PTSN?

A

PTSN (world’s connection of interconnected phone networks) and Cellular (built from small areas called ‘cells’ around base stations.

27
Q

3 Advantages of PTSN

A

It is established technology
it is reliable
it requires no extra equipment.

28
Q

3 Disadvantages of PTSN

A

Requires a dedicated line for making and taking a call
call charges are higher than VoIP
you need to pay maintenance fees every month.

29
Q

What are Sat Phones?

A

Satphones or satellite phones (connect to orbiting satellites not cellular networks and are popular for voice calling in remote locations.) Satphones (also provide data services such as GPS and internet access.)

30
Q

3 Advantages Of Sat Phones?

A

Signal will be a lot stronger

phones always tell you if you are receiving a call.

31
Q

3 Disadvantages Of Sat Phones?

A

Maintenance costs are high
only work when a direct line of sight exists with the sky
difficult to get coverage near a tall building.

ICT Level 3 LO1-LO3 Flashcards COPY COPY (26 decks)

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