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Website Hosting in 2020 with NameCheap. The Ultimate Step by Step Website Setup Tutorial (A Beginner’s Guide) – Less than $15
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Download CSE Study Materials | CPEN Drive |
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What is the role of the forwarding table within a router?
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Computer Networks
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We noted that network layer functionality can be broadly divided into data plane functionality and control plane functionality. What are the main functions of the data plane? Of the control plane?
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Suppose two packets arrive to two different input ports of a router at exactly the same time. Also suppose there are no other packets anywhere in the router.
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Host Aand B are directly connected with a 100 Mbps link. There is one TCP connection between the two hosts, and Host Ais sending to Host B an enormous file over this connection.
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Computer Networks
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Consider the GBN protocol with a sender window size of 4 and a sequence number range of 1,024. Suppose that at time t, the next in-order packet that the receiver is expecting has a sequence number of k
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Computer Networks
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True or false? Consider congestion control in TCP. When the timer expires at the sender, the value of ssthresh is set to one half of its previous value.
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Computer Networks
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Suppose two TCP connections are present over some bottleneck link of rate R bps. Both connections have a huge file to send (in the same direction over the bottleneck link).
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Computer Networks
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Consider a reliable data transfer protocol that uses only negative acknowledgments. Suppose the sender sends data only infrequently. Would a NAK-only protocol be preferable to a protocol that uses ACKs?
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Computer Networks
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Suppose that the roundtrip delay between sender and receiver is constant and known to the sender. Would a timer still be necessary in protocol rdt 3.0, assuming that packets can be lost? Explain.
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Computer Networks
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Consider a channel that can lose packets but has a maximum delay that is known. Modify protocol rdt2.1 to include sender timeout and retransmit. Informally argue why your protocol can communicate correctly over this channel.
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Computer Networks
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In our rdt protocols, why did we need to introduce sequence numbers?
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Computer Networks
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Suppose that a Web server runs in Host C on port 80. Suppose this Web server uses persistent connections, and is currently receiving requests from two different Hosts, A and B.
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Computer Networks
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Draw the FSM for the receiver side of protocol rdt3.0.
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Computer Networks
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Suppose a process in Host C has a UDP socket with port number 6789. Suppose both Host A and Host B each send a UDP segment to Host C with destination port number 6789.
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Is it possible for an application to enjoy reliable data transfer even when the application runs over UDP? If so, how?
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Computer Networks
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Why is it that voice and video traffic is often sent over TCP rather than UDP in today’s Internet?
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Computer Networks
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Suppose that the UDP receiver computes the Internet checksum for the received UDP segment and finds that it matches the value carried in the checksum field. Can the receiver be absolutely certain that no bit errors have occurred? Explain.
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Computer Networks
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Describe why an application developer might choose to run an application over UDP rather than TCP.
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Computer Networks
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Consider a planet where everyone belongs to a family of six, every family lives in its own house, each house has a unique address, and each person in a given house has a unique name.
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Computer Networks
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Duplicate: What are the four main components of any general purpose computer?
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Computer Architecture
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anonymous
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Duplicate: What is a stored program computer
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Computer Architecture
by
anonymous
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Duplicate: Distinction between computer organization and computer architecture
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Computer Architecture
by
anonymous
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Non-certified individuals are still allowed to practice software engineering. Discuss some of the possible drawbacks of this.
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Software Engineering
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anonymous
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Explain how electronic connectivity between various development teams can support software engineering activities.
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Software Engineering
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anonymous
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Duplicate: List and briefly define the main structural components of a processor.
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Computer Architecture
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anonymous
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Two methods of bus arbitration
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Computer Architecture
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anonymous
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Suppose Client A initiates a Telnet session with Server S. At about the same time, Client B also initiates a Telnet session with Server S. Provide possible source and destination port numbers for a. The segments sent from A to S.
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Computer Networks
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What is the Apache Web server? How much does it cost? What functionality does it currently have? You may want to look at Wikipedia to answer this question.
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Computer Networks
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We have seen that Internet TCP sockets treat the data being sent as a byte stream but UDP sockets recognize message boundaries.
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Computer Networks
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Can you configure your browser to open multiple simultaneous connections to a Web site? What are the advantages and disadvantages of having a large number of simultaneous TCP connections?
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Computer Networks
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Consider a DASH system for which there are N video versions (at N different rates and qualities) and N audio versions (at N different rates and qualities).
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Computer Networks
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Besides network-related considerations such as delay, loss, and bandwidth performance, there are other important factors that go into designing a CDN server selection strategy. What are they?
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Computer Networks
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Consider an overlay network with N active peers, with each pair of peers having an active TCP connection.
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Computer Networks
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(user.guest)
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CDNs typically adopt one of two different server placement philosophies. Name and briefly describe them.
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Computer Networks
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(user.guest)
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What is an overlay network? Does it include routers? What are the edges in the overlay network?
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Computer Networks
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Consider a new peer Alice that joins BitTorrent without possessing any chunks. Without any chunks, she cannot become a top-four uploader for any of the other peers, since she has nothing to upload. How then will Alice get her first chunk?
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Computer Networks
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Suppose that your department has a local DNS server for all computers in the department.
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Computer Networks
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Look over your received emails, and examine the header of a message sent from a user with an .edu email address.
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Computer Networks
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Suppose you can access the caches in the local DNS servers of your department. Can you propose a way to roughly determine the Web servers (outside your department) that are most popular among the users in your department? Explain.
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Computer Networks
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