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23
Computer Science
Undergraduate 4
11/08/2010

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Cards

Term
Question
Definition
Answer
Term
A user types www.cisco.com into a web browser address textbox. What does www.cisco.com represent?
Definition
the IP address of a web server
Term
What type of server would use IMAP?
Definition
e-mail
Term
Which type of server would most likely be used first by a network client in a corporate environment?
Definition
DHCP
Term
Which protocol is used by FTP to transfer files over the Internet?
Definition
TCP
Term
Which protocols are TCP/IP application layer protocols?
Definition
1. FTP

2. SMTP
Term
Which of the following are layers of the TCP/IP model?
Definition
1.Application

2.Internet

3.Network Access
Term
You are creating a network-based video game. What influences your decision about which transport protocol to use for the application?
Definition
UUDP will not disrupt the game to retransmit dropped packets.
Term
Whenever e-mail clients send letters, what device is used to translate the domain names into their associated IP addresses?
Definition
DNS server
Term
Which application is most likely used to translate www.cisco.com to 198.133.219.25?
Definition
DNS
Term
[image]

 

 

Refer to the graphic. Which protocol is used to access this website?

Definition
HTTP
Term
Which port number is used by SMTP?
Definition
25
Term
Which protocol is used by e-mail servers to communicate with each other?
Definition
SMTP
Term
What client software enables logged in users to communicate with other logged in
users in real time?
Definition
instant messaging
Term
An Internet server is running both FTP and HTTP services. How does the server
know which of these applications should handle an incoming segment?
Definition
The segment destination port number identifies the application that should handle it.
Term
What term is used to describe how TCP/IP protocols are layered and interact to
format, address, and transmit information across a network?
Definition
protocol stack
Term
What three items are contained in an Ethernet frame?
Definition

1. source MAC address

2. destination MAC address

3.error-checking information

Term
What information is contained in an IP header?
Definition
source and destination IP addresses
Term
Cabling issues are associated with which OSI layer?
Definition
1
Term
A device receives an Ethernet frame and recognizes the MAC address as its own.
What does the device do to the message to get to the encapsulated data?
Definition
removes the Ethernet header and trailer
Term

A client has decoded a frame and started the de-encapsulation process. In which order does the de-encapsulation process occur?

Definition
1) remove Ethernet header and trailer 2) remove IP header 3) remove TCP header 4) pass data to the application
Term
What is an advantage of the use of layers in the OSI reference model?
Definition
It prevents changes in one layer from affecting other layers.
Term

What is the correct order of the layers of the OSI reference model, starting at the lowest layer and working up the model?

Definition
physical, data link, network, transport, session, presentation, application
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