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Net > Chap 1 > Flashcards

Chap 1 Flashcards

1
Q

Definition of Host

A

Devices in the network that are assigned a number for communication purposes

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2
Q

Definition of IP address

A

An IP address identifies the host and the network to which the host is attached

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3
Q

Definition of Client

A

Clients are a type of host. They have software for requesting and displaying information obtained from the server

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4
Q

What are the 3 common types of software?

A

Email, Web and File

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5
Q

Describe the email software

A

The email server runs email server software. Clients use mail client software such as Microsoft Outlook , to access email on the server

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6
Q

Describe the web software

A

The web server runs web server software. Clients use browser software, such as Windows Internet Explorer, to access web pages on the server.

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7
Q

Describe the file software

A

The file server stores corporate and user files in a central location. The client devices access these files with client software such as the Windows File Explorer.

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8
Q

Define P2P ( Peer to Peer) Network

A

Computer that functions as both client and server on the network

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9
Q

What is the advantage of P2P ( Peer to Peer Network) ?

A
  1. Easy to get up
  2. Less Complex
  3. Lower cost because network devices and dedicated servers may not be required.
  4. Can be used for simple tasks such as transferring files and sharing pictures
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10
Q

What is the disadvantage of P2P ( Peer to Peer Network) ?

A
  1. No centralised adminstaration
  2. Not as secure
  3. Not scalable
  4. All devices can work as both client and server which can slow down their performance
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11
Q

What is an end device?

A

It is the source or destination of a message transmitted over the network

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12
Q

How does end devices initiate communication?

A

It uses the address of the destination end device to specify where to deliver the message

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13
Q

What does the intermediary device do?

A
  1. Provide connectivity
  2. Ensure data flow across the network
  3. Connect multiple end devices to the network
  4. Connect multiple individual networks to form an internetwork
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14
Q

What does IND do to determine the path that messages should take through the network?

A

It uses the destination end device address in conjunction with the information about network interconnections.

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15
Q

How is data transmitted over the 3 network media?

A

Metal wires within cables - Data is encoded into electrical impulses.
Glass or plastic fibers within cables (fiber-optic cable) - Data is encoded into pulses of light.
Wireless transmission - Data is encoded via modulation of specific frequencies of electromagnetic waves.

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16
Q

What are the 4 main criteria for choosing network media?

A
  1. What is the maximum distance that the media can successfully carry a signal?
  2. What is the environment in which the media will be installed?
  3. What is the amount of data and at what speed must it be transmitted?
  4. What is the cost of the media and installation ?
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17
Q

What does network media do

A

It provides pathway for data transmission as well as interconnects devices to the network.

18
Q

What is NIC ( Network Interface Card)?

A

A NIC physically connects the end devices to the network

19
Q

What is Physical Port?

A

A connector or outlet on a networking device where the media connects to an end device or another networking device

20
Q

What is Interface?

A

Specialized ports on a networking device that connect to individual networks. Because routers connect networks, the ports on a router are referred to as network interfaces.

21
Q

What is Physical Topology Diagram?

A

Physical topology diagrams illustrate the physical location of intermediary devices and cable installation

22
Q

What is Logical Topology Diagram?

A

Logical topology diagrams illustrate devices, ports, and the addressing scheme of the network

23
Q

What is SOHO ( Small Office and Home Office Networks)?

A

The SOHO network allows computers in a home office or a remote office to connect to a corporate network, or access centralized, shared resources.

24
Q

What is Medium to large networks?

A

Medium to large networks, such as those used by corporations and schools, can have many locations with hundreds or thousands of interconnected host

25
Q

What is the World Wide Network?

A

The internet is a network of networks that connects hundreds of millions of computers world-wide.

26
Q

What is SH ( Small Home Network)?

A

Small home networks connect a few computers to each other and to the internet.

27
Q

What does network infrastructure vary greatly in terms of?

A

Size of the area covered
Number of users connected
Number and types of services available
Area of responsibility

28
Q

What are the characteristics of LAN ?

A

LANs interconnect end devices in a limited area such as a home, school, office building, or campus.
A LAN is usually administered by a single organization or individual. Administrative control is enforced at the network level and governs the security and access control policies.
LANs provide high-speed bandwidth to internal end devices and intermediary devices.

29
Q

What are the characteristics of WAN?

A

WANs interconnect LANs over wide geographical areas such as between cities, states, provinces, countries, or continents.
WANs are usually administered by multiple service providers.
WANs typically provide slower speed links between LANs.

30
Q

What is Intranet?

A

Intranet is a term often used to refer to a private connection of LANs and WANs that belongs to an organization. An intranet is designed to be accessible only by the organization’s members, employees, or others with authorization

31
Q

What is an extranet?

A

An organization may use an extranet to provide secure and safe access to individuals who work for a different organization but require access to the organization’s data. Here are some examples of extranets:

A company that is providing access to outside suppliers and contractors
A hospital that is providing a booking system to doctors so they can make appointments for their patients
A local office of education that is providing budget and personnel information to the schools in its district

32
Q

What is the function of cable in a HOSO Internet Connection ?

A
  • Typically offered by cable television service providers, the internet data signal transmits on the same cable that delivers cable television. It provides a high bandwidth, high availability, and an always-on connection to the internet.
33
Q

What is the function of DSL in a HOSO Internet Connection ?

A

Digital Subscriber Lines also provide high bandwidth, high availability, and an always-on connection to the internet. DSL runs over a telephone line. In general, small office and home office users connect using Asymmetrical DSL (ADSL), which means that the download speed is faster than the upload speed.

34
Q

What is cellular in a HOSO Internet Connection ?

A

Cellular internet access uses a cell phone network to connect. Wherever you can get a cellular signal, you can get cellular internet access. Performance is limited by the capabilities of the phone and the cell tower to which it is connected.

35
Q

What is the function of satelite in a HOSO Internet Connection ?

A

The availability of satellite internet access is a benefit in those areas that would otherwise have no internet connectivity at all. Satellite dishes require a clear line of sight to the satellite.

36
Q

What is a Dial-up Telephone HOSO Internet Connection ?

A

An inexpensive option that uses any phone line and a modem. The low bandwidth provided by a dial-up modem connection is not sufficient for large data transfer, although it is useful for mobile access while traveling.

37
Q

What is Dedicated Leased Line in Business Internet Connections?

A

Leased lines are reserved circuits within the service provider’s network that connect geographically separated offices for private voice and/or data networking. The circuits are rented at a monthly or yearly rate.

38
Q

What is Metro Ethernet in Business Internet Connections?

A

his is sometimes known as Ethernet WAN. In this module, we will refer to it as Metro Ethernet. Metro ethernets extend LAN access technology into the WAN.

39
Q

What is Business DSL in Business Internet Connections?

A

Business DSL is available in various formats. A popular choice is Symmetric Digital Subscriber Line (SDSL) which is similar to the consumer version of DSL but provides uploads and downloads at the same high speeds.

40
Q

What is Satellite in Business Internet Connections?

A

Satellite service can provide a connection when a wired solution is not available.

Net (2 decks)

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