Top Select Interview Questions for Network Engineer's!!!

Q31. What is Mail Gateway?
Ans. It is a system that performs a protocol translation between different electronic mail deliveryprotocols.

Q32. What is wide-mouth frog?
Ans. Wide-mouth frog is the simplest known key distribution center (KDC) authentication protocol.

Q33. What are Digrams and Trigrams?
Ans. The most common two letter combinations are called as digrams. e.g. th, in, er, re and an. The most common three letter combinations are called as trigrams. e.g. the, ing, and, and ion.

Q34. What is silly window syndrome?
Ans. It is a problem that can ruin TCP performance. This problem occurs when data are passed to the sending TCP entity in large blocks, but an interactive application on the receiving side reads 1 byte at a time.

Q35. What is region?
Ans. When hierarchical routing is used, the routers are divided into what we call regions, with each router knowing all the details about how to route packets to destinations within its own region, but knowing nothing about the internal structure of other regions.

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Top Select Interview Questions for Network Engineer's!!

Q26. What is Gateway-to-Gateway protocol?
Ans. It is a protocol formerly used to exchange routing information between Internet core routers.

Q27. What is BGP (Border Gateway Protocol)?
Ans. It is a protocol used to advertise the set of networks that can be reached with in an autonomous system. BGP enables this information to be shared with the autonomous system. This is newer than EGP (Exterior Gateway Protocol).

Q28. What is autonomous system?
Ans. It is a collection of routers under the control of a single administrative authority and that uses a common Interior Gateway Protocol.

Q29. What is EGP (Exterior Gateway Protocol)?
Ans. It is the protocol the routers in neighboring autonomous systems use to identify the set of networks that can be reached within or via each autonomous system.

Q30. What is IGP (Interior Gateway Protocol)?
Ans. It is any routing protocol used within an autonomous system.