CMSC 440 Final Exam Questions with correct answers

CMSC 440 Final Exam Questions with
correct answers

At the source host, the job of gathering data chunks from different sockets,
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adding header information (for demultiplexing at the receiver), and passing the
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resulting segments to the network - CORRECT ANSWER✔✔-multiplexing
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the sender is allowed to send multiple packets without waiting for an
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acknowledgment. - CORRECT ANSWER✔✔-pipelined protocol | | | |




After the __________________________ is complete, a TCP connection is said to
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be established and the two processes can send application data to each other. -
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CORRECT ANSWER✔✔-3-packet handshake
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The main objective of ________________ is to have the receiver tell the sender
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how much spare room it has in its receive buffer; and to have the sender restrict
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the amount of data that it puts in the pipeline to be less than the spare room. -
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CORRECT ANSWER✔✔-flow control | |




TCP's congestion control consists of linear increase in cwnd of 1 MSS per RTT and
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then a halving of cwnd on a triple duplicate-ACK event. For this reason, TCP
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congestion control is often referred to as an _____________ form of congestion
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control. - CORRECT ANSWER✔✔-additive-increase multiplicative decrease (AIMD)
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, state of TCP, the value of cwnd begins at 1 MSS and increases by 1 MSS every
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time a transmitted segment is first acknowledged. - CORRECT ANSWER✔✔-slow-
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start


routing algorithms are distributed in nature—each node communicates only with
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its directly connected neighbors, exchanging its estimates of its least cost to reach
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|each node in the network. - CORRECT ANSWER✔✔-Distance vector
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is a network that is under the control of a single organization. - CORRECT
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ANSWER✔✔-autonomous system |




refers to the process of determining the end-to-end path that a packet will take
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through the network. - CORRECT ANSWER✔✔-Routing
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refers to the per-router action of moving a packet arriving at an input port to the
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appropriate output port. - CORRECT ANSWER✔✔-Forwarding | | | | |




is the protocol used to route datagrams among autonomous systems, and thus it
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is the "glue" that binds the Internet together. - CORRECT ANSWER✔✔-Border
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Gateway Protocol (BGP) | |




can be used to connect two routers logically over a path that contains multiple
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routers. For example, it allows two IPv6 routers to exchange IPv6 datagrams with
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each other, via routers that only "speak" IPv4. - CORRECT ANSWER✔✔-Tunneling
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is the process of splitting the data payload in the IP datagram into two or more
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smaller IP datagrams, encapsulate each of these smaller IP datagrams in a
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