WAN encapsulation of frames at the Data Link layer involves one or more services. Briefly discuss four of these services.
What will be an ideal response?
Addressing: For WAN links in which more than two nodes are involved in possible connections, a unique destination address is required.
Bit-level integrity check:With a bit-level integrity check, checksums calculated before and after transmission, when compared, indicate if the message changed between when it was sent and when it was received.
Delimitation: Data link frames require specific end-of-frame markers, and each frame's header and trailer must be distinct from its payload.
Protocol identification (PID): When WAN links support multiple protocols, some method to identify individual protocols in the payload is required. A protocol identification (PID) in the header supplies this information.
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Evidence arising out of the electronic discovery process typically exists in the form of ____________________ representation.
Fill in the blank(s) with the appropriate word(s).
A class's ____constructor is automatically supplied.
A. initial B. object C. default D. destructor