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Networking > Chapter 1-Introduction To Networking > Flashcards

Chapter 1-Introduction To Networking Flashcards

1
Q

What is a network?

A

A network is a group of computers and other devices (such as printers) that are connected by some type of transmission media.

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2
Q

What is a network server?

A

Resources a network makes available to its users include applications and the data provided by these applications.

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3
Q

What is a Client-server application?

A

Involves two computers. First the client computer, request data or a service from the second computer, called the server.

ex. A Web browser (client application) request a Web page from a Web server (server application); the Web server returns the requested data to the client

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4
Q

What are protocols?

A

Networked devices use methods and rules for communication.

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5
Q

What is a Web service?

A

A Web service serves up Web pages to clients.

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6
Q

What is the primary protocol used by Web servers and browsers (clients)?

A

HTTP (Hypertext Transfer Protocol)

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7
Q

Name two encrypted protocol?

A

SSL (Secure Sockets Layer)

TLS (Transport Layer Security)

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8
Q

What is it called when HTTP is layered on top of an encryption protocol?

A

HTTPS (HTTP Secure)

This gives a secure transmission

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9
Q

What is the most popular Web server application?

What is the second most popular Web browser application?

A

Apache

Internet Information Services (IIS)

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10
Q

What system does Apache primarily run on?

A

UNIX

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11
Q

IIS is embedded in what system?

A

Windows Server Operating system

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12
Q

What are email services?

A

Email is a client-server application that involves two servers.

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13
Q

What does email use to send an email message to the first server?

A

SMTP (Simple Mail Transfer Protocol) somtimes called the SMTP server

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14
Q

How do servers work as far as email is concerned?

A

The first server, sometimes called SMTP server, sends the message on to the receiver’s mail server, where it is stored until the recipient request delivery.

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15
Q

The recipient’s mail server delivers the message to the receiving client using one of which two protocols?

A

POP3 (Post Office Protocol, version 3)

IMAP4 (Internet Message Access Protocol, version 4)

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16
Q

What is the difference between POP3 and IMAP4

A

Using POP3, email is downloaded to the client computer. Using IMAP4, the client application manages the email stored on the server.

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17
Q

What is a popular email server application?

A

Microsoft Exchange server

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18
Q

What is a popular email client application?

A

Outlook

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19
Q

What is a FTP server?

What protocol does it use?

A

A client-server application that transfers files between two computers.

FTP (File Transfer Protocol)

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20
Q

What is a negative about FTP?

A

It does not provide encryption and is, therefore, not secure.

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21
Q

Can Web browsers be FTP clients?

A

yes, but it doesn’t offer as many features as of applications

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22
Q

What are is and example of a dedicated FTP client applications?

A

CuteFTP by GlobalSCAPE

This offers more features than a browser

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23
Q

What is an encrypted and secure version of FTP?

A

SFTP (Secure Firle Transfer Protocol)

24
Q

What is a Telnet service?

A

Allow an administrator or other user to “remote in” or control a computer remotely.

25
Q

Is Telnt secure?

A

No, its not encrypted

26
Q

What is telnet been largely replaced by?

A

ssh command in the Linux operating system

27
Q

What protocol does the ssh command in Linux use?

A

Secure Shell (SSH) protocol, which creates a secure channel or tunnel between two computers.

28
Q

What is a Remote Desktop?

A

Uses RDP (Remote Desktop Protocol) to provide secure, encrypted transmissions that allow a technician to remote in-that is, to access a remote computer from the technician’s local computer.

29
Q

When a vendor’s support technician at the vendor’s site uses Remote Desktop to connect to a computer on your corportate network to troubleshoot problems with the vendor’s software, who is the client and who is the server?

A

The vendor’s computer is the client and the corporate computer is running Remote Dektop as a server or host

30
Q

What are remote applications?

A

An application that is installed and executed on a server and is presented to a user working at a client computer.

31
Q

Windows Server 2008 and later include what to manage remote applications.

A

Remote Desktop Services

32
Q

What was used to manage remote applications prior to 2008?

A

Terminal Services

33
Q

Why are remote applications becoming popular?

A

Most of the computing power (memory and CPU speed) and technical support (for application installations and updates and for backing up data) are focused on the server in a centralized location, which means the client computers require less computing power and desk-side support.

34
Q

What is file service?

A

A server’s ability to share data file and disk storage space.

35
Q

What is a computer that provides file serves called?

A

file server

36
Q

What is a file server?

A

Serves up data to users, in contrast to users keeping copies of the data at their workstations.

37
Q

Why is having a file server benificial?

A

Data stored at a central location is typically more secure because a network administrator can take charge of baking up this data, rather than relying on individual users to make their own backup

38
Q

What are print services?

Why is this benificial?

A

Share printers across a network.

Saves time and money

39
Q

What is convergence?

A

Using the same network to deliver multiple types of communications services, such as video, voice, and fax.

40
Q

What is unified communications (UC)?

A

The centralized management of multiple network-based communications

41
Q

What are tree types of services a network might support that are considered part of unified communications or convergence?

A

conversational voice, streaming live audio or video, and straming stored audio or video

42
Q

What is an example of conversational voice?

A

VoIP

43
Q

What is VoIP (Voice over IP)?

A

Allows two or more people to have voice conversations over a network.

VoIP is fast replacing traditional telephone service in homes and businesses

44
Q

What are two examples of VoIP applications?

A

Skype and Google Talk

45
Q

What is point-to-point model?

A

The computer involved is independent of the other computers

46
Q

What is point-to-multipoint model?

A

Involves one transmitter and multiple calls. An example would be a conference call.

47
Q

What is an example of streaming live audio and video?

A

video teleconference (VTC) applications such as Skype and Google talk

48
Q

What is a video teleconference (VTC)?

A

Allows people to communicate in video and voice, primarily using the point-to-point model

49
Q

What is multicast distribution?

A

The application is using a client-server model with one server and many clients such as a live sporting event

50
Q

The session layer protocol that is specifically designed to transmit audio and video and that works in conjunction with VoIP is what?

A

RTP (Real-time Transport Protocol)

51
Q

Why are voice and video transmissions delay-sensitive?

A

Because you don’t want to hear breaks in your conversation or see buffering message when you watch a movie over the internet.

52
Q

What is meant by loss-tolerant?

A

Occational loss of data (skipping video frames) can be tolerated

53
Q

What does bandwidth mean?

A

The amount of traffic, or data transmission activity, on the network

54
Q

What is a topology?

A

Describes how the parts of a whole work together.

55
Q

What is physical topology?

A

Also called network topology, mostly applies to hardware and describes how computers, other devices, and cables fit together to form the physical network.

56
Q

What is logical topology?

A

Has to do with software and secribes how access to the network is controlled, including how users and programs initially gain access to the network and how specific resources, such as applications and databases, are shared on the networkl

57
Q
A

Networking (2 decks)

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