16 Questions
What is the primary responsibility of the data link layer?
Transferring datagrams from one node to the physically adjacent node over a link
Which hardware devices can implement the data link layer?
Ethernet card and 802.11 card
What does the data link layer do with the packets received from the network layer?
Encapsulates them into frames
Where is the data link layer deployed?
In all network nodes
What is the main role of the data link layer protocol?
Framing
How does the data link layer transfer frames on the hardware?
Bit-by-bit transmission
What is the responsibility of the Logical Link Control (LLC) sublayer in the data link layer?
Dealing with framing and detecting errors
Which error detection mechanism is the least expensive and appends a redundant parity bit to every data unit?
Simple Parity Checking
What type of error means that two or more bits in the data unit have changed from 0 to 1 or vice-versa?
Burst Error
Which sublayer of the data link layer is responsible for hardware addressing mechanisms and controls physical media access?
Media Access Control (MAC)
In the context of error detection, what is one-dimension parity check meant to achieve?
Detecting single-bit errors
What protocol is used for wireless links at the data link layer?
802.11
What are the two types of errors discussed in the text related to data units?
Single-bit Error and Burst Error
What is the main function of the Media Access Control (MAC) sublayer in the data link layer?
Managing hardware addressing mechanisms
'Parity check bits are calculated for each row, which is equivalent to a simple parity check bit.' - This statement is related to which error detection mechanism?
Two-dimensions Parity Check
What does the Cyclic Redundancy Check (CRC) provide in addition to error detection?
Error detection and correction
This quiz covers the content from Lecture 10 of Computer Networks by Dr. Dina Fawzy, focusing on the introduction to the Data Link layer and its functions, protocols, types of errors, error detection, and correction. It also includes terminology such as hosts, routers, communication channels, and data transfer responsibilities.
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