Topic 3: Network Flashcards

1
Q

Define network

A

collection of computers that connected together via communication device and transmission media

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2
Q

advantages of network

A
  • sharing hardware and software
  • sharing data and information
  • facilitating communication
  • transferring funds
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3
Q

LAN (local area network)

A

in limited geographical are

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4
Q

LAN (local area network)

A

in limited geographical are

WLAN: wireless

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5
Q

5 types of networks

A
  1. LAN
  2. WLAN
  3. MAN (metropolitan)
  4. PAN (personal)
  5. WAN (wide area)
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6
Q

Broadband media

A

transmit multiple signal simultaneously

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7
Q

Define bandwidth and latency

A

bandwidth: amount of data, information and instruction that can travel over the transmission media
latency: time taken by a signal travel from one location to another on the Internet

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8
Q

3 types cable used in LAN

A
  1. twisted-pair cable
  2. coaxial cable
  3. fiber optic cable
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9
Q

Broadcast radio

A

a wireless transmission medium that distribute radio signal via the air over long distances

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10
Q

communication satellite

A
  1. receive microwave signal from an earth-based station
  2. amplifies it
  3. broadcast the signal over a wide area to any number of earth-based station
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11
Q

GPS (Global Positioning System)

A

navigation system to determine user’s geographical location
- consists of one or more earth-based receiver
- accept and analyze the signal sent by satellite

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12
Q

wifi standard

A

802.11

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13
Q

TCP/IP

A

network protocol that define how the data routed from one network to another

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14
Q

token ring

A

share and pass a special signal

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15
Q

ADSL

A

a DSL that support faster downstream rate than upstream rate

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16
Q

examples of communication lines

A
  • cable
  • DSL
  • T-carrier
  • ATM