What is data link layer, Computer Engineering

Assignment Help:

Q. What is Data link layer?

Data link layer: data link layer is responsible for transmitting a group of bits between adjacent nodes. Group of bits is termed as frame. Network layer passes a data unit to data link layer and data link layer adds header information to this data unit. Data link layer performs below functions:

• Addressing: Headers and trailers are added containing physical addresses of adjacent nodes and removed on a successful delivery.

• Framing: Grouping of/bits received from network layer into manageable units termed as frame.

• Flow control: to regulate the amount of data which can be sent to the receiver.

• Media access control (MAC): who decide who can send data, when and how much.

• Synchronization: this layer also comprise bits to synchronize the timing to know the bit interval to recognize bit correctly.

• Error control: it incorporates CRC to ensure the correctness of the frame.

• Node to node delivery: it's also responsible for error-free delivery of entire packet/frame to the next adjacent node.


Related Discussions:- What is data link layer

Quantifiers and variables - propositional model, Quantifiers and Variables ...

Quantifiers and Variables - propositional model: There is one question is arrives that 'What do sentences containing variables mean?' In other way of words, how does a first-o

What is tcas, tCAS is the number of clock cycles required to access a parti...

tCAS is the number of clock cycles required to access a particular column of data in SDRAM. CAS latency is the column address strobe time, sometimes referred to as tCL.

Applications of generic framework for e-commerce executed, How are applicat...

How are applications of generic framework for e-commerce executed? To execute applications, this is essential to have Supporting Information and Organizational Infrastructure a

Define the term ''page traffic'', The term 'page traffic' describes? An...

The term 'page traffic' describes? Ans. Page Traffic describes the movement of pages in and out of memory.

Operator, write algorithm and draw flowchart for exchange the values of two...

write algorithm and draw flowchart for exchange the values of two variables.

What is double entry - verification, What is Double entry - Verification ...

What is Double entry - Verification In this approach, data is entered twice (using two different people); data is only accepted if both versions match up. Generally used to ve

Restore the system defaults, In order to restore the system defaults for al...

In order to restore the system defaults for all changes made with the format statement is Format Reset

Which method is used for resolving data dependency, Which method is used fo...

Which method is used for resolving data dependency conflict by the compiler itself?  (A) Delayed load.   (B) operand forwarding.   (C) Pre fetch target instruction.  (D) loo

Describe collective communications, Q. Collective Communications? A num...

Q. Collective Communications? A number of message-passing systems allow communication involving more than two processors. Such type of communication can be known as collective

Illustrate the list of key differences to word processors, Illustrate the l...

Illustrate the list of key differences to word processors The following is a list of key differences to word processors: -  Most word processors force users to work on a doc

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd