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Echo > Networking+ > Flashcards

Networking+ Flashcards

1
Q

What are the benefits of networking?

A
  • Information sharing
  • Hardware and software sharing
  • Centralized hardware and support
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2
Q

What is a LAN?

A

Local Area Network

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3
Q

In what network are all computers equal with no centralized authority?

A

Peer to peer network

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4
Q

What is one advantage of a peer to peer network

A

*Easy to install and configure
*individual machines do not depend on the presence of a dedicated server
individual users control their own shared resources
*Inexpensive to purchase and operate
*no additional equipment or software beyond a suitable operating system is needed
*no dedicated administrators are needed to run the network
*works best for networks with 10 or fewer users

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5
Q

What is the difference between a LAN and a WAN

A

LAN

  • Local Area Network
  • Small area

WAN

  • Wide Area Network
  • Spans miles
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6
Q

What does VPN stand for?

A

Virtual Private Network

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7
Q

How do VPN’s work?

A

Create secure “tunnels” through the internet

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8
Q

What is the recommended maximum number of computers in a peer to peer network?

A

10 computers

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9
Q

What does OSI stand for?

A

Open System Interconnection

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10
Q

What are the levels of the OSI model?

A
  1. Application
  2. Presentation
  3. Session
  4. Transport
  5. Network
  6. Data Link
  7. Physical
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11
Q

What is the maximum length for one section of Cat 5 cable?

A

100 meters

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12
Q

What type of connectors are used for Cat 5 cable?

A

RJ45

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13
Q

What is a collision domain?

A

All computers talk to all other computers are the same time

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14
Q

What is a broadcast domain?

A

Collision domain broken up into segments using switches and routers

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15
Q

How many devices in a collision domain have to listen when a single host talks?

A

All devices

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16
Q

What is a hub?

A

Central point for connecting computers in a single network. Unless it is an active hub, it won’t amplify or regenerate the signal, meaning that there can be no more than 100m of cat 5 cable between any two devices connected to the hub.

17
Q

What is a repeater?

A

A powered connectivity device that regenerates and amplifies a digital or analog signal

18
Q

What is a NIC?

A

Network Interface Card

19
Q

What does an NIC do?

A
  • Establishes and manages the network connection
  • Translates incoming and outgoing data into signals
  • determines whether or not incoming signals are meant for the computer
  • has Media Access Control (MAC) address encoded into chips
    • 12 digit hexadecimal number
20
Q

What does a router do?

A
  • Connects networks together
  • Gateway out of a network
  • Adjustable security settings
  • Filters out broadcast transmissions
  • Monitors network traffic and reports statistics
  • LAN and WAN ports
  • Allows shared internet connection
21
Q

What does a firewall do?

A
  • Filters network traffic
  • Filters applications’ access to network
  • Can be hardware or software
  • Services use different ports
22
Q

What device allows several computers to share a single internet connection?

A

Router

23
Q

What advantage does a switch have over a hub?

A

Switches remember IP addresses and will send intended traffic to the intended device only. Hubs broadcast all traffic to all connected devices.

24
Q

What device can you use to expand your network?

A

Router

25
Q

What does TCP/IP stand for?

A

Transmission Control Protocol / Internet Protocol

26
Q

Which of the following describes a network address and which is the broadcast address?

  • All host bits are ones (last IP address)
  • All host bits are zeros (first IP address)
A
  • First IP address is the Network address

* Last IP address is the broadcast address

27
Q

Your IP address is 169.254.13.34. What type of IP address is this?

A

Private IP address

28
Q

Your IP address is 169.254.13.34. What is the network ID for your network?

A

169.254.13.0

29
Q

Your IP address is5169.254.13.34. What is the broadcast ID?

A

169.254.16.255

Echo (2 decks)

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