Content Quiz 11-1: Computer Networks - Parts 7 - 9 (Services, Physical Layer, Link Layer)

In a reliable network service, the sender requires an acknowledgment from the receiver. True or False.

True

The link layer deals with....

a. raw bits

b. logical units of data

c. Data Strcutures

d. Session establishment and managment

e. Data formatting

b. Logical units of data

Explanation: Part of what the link layer does it that it regulates the flow of packets. Remember that packets are a unit of data that are given by a network layer.

What does it mean when we say that the receiver knows how to de-stuff the received bytes?

a. all flag and escape bytes found in the payload are deleted.

b. all flag bytes found in the payload are deleted

c. the physical layer removes flags before passing the data to the link layer

d. the receiver ignores escape bytes inserted when the flag byte occurs in the payload

d. the receiver ignores escape bytes inserted when the flag byte occurs in the payload

Given the environment, what error control approach would we use for the following?

a. Media that is not error prone (e.g., optical fiber)

b. Media that is error prone (e.g., wireless links)

a. We would use error detecting code

b. We would user error correcting code

Hamming code and Reed Solomon code are examples of ________ _________ _______

error correcting codes

Which value (or field) in the IP header (Layer-3) is used to prevent accidental routing loops?

Time to live

The source address field in the TCP IP header contains the (a)_____ address of the original (b)______ of the (c)_______

a. IP

b. sender

c. packet

The ____ flag is set to 1 in the TCP IP header to indicate that the value in the Acknowledgment number field is the next sequence number that the receiver is expect. (provide the abbreviation)

ACK

The ___ flag is set to 1 in the TCP IP header to indicate that the sender has no more data to send.

Please provide the acronym (short name or abbreviation).

FIN