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Problem 1 `traceroute’ is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. In this problem, you will use the `traceroute’ command to understand how packets route to a destination. Run traceroute command to nd a route to `ucla.edu’. How…
Problem 1
`traceroute’ is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. In this problem, you will use the `traceroute’ command to understand how packets route to a destination.
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Problem 2
Host A is sending real-time voice over a packet-switched network. Host A converts analog voice to a digital 128 kbps bit stream on the y. Host A then groups 1,600 bytes into a packet. Assume that the 1,600 bytes packet already includes all headers. There is one link between Hosts A and B; its transmission rate is 3 Mbps and its propagation delay is 20 msec. As soon as Host A gathers a packet, it sends it to Host B. As soon as Host B receives an entire packet, it converts the packets bits to an analog signal. How much time elapses from the time a bit is created (from the original analog signal at Host A) until the bit is decoded (as part of the analog signal at Host B)? In this problem, do not consider acknowledgement (response) from Host B.
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Problem 3
Tow hosts, A and B are separated by 20,000 kilometers and are connected by a direct link of R = 2M bps.
Suppose the propagation speed over the link is 2:5 108meters=sec.
Consider sending a le of 800,000 bits from Host A to Host B. Suppose the le is sent continuously as one large message. What is the maximum number of bits that will be in the link at any given time?
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Problem 4
Alice and Bob are working remotely on a course project and are using git as the version control software.
Is it true that one must have GitHub/GitLab account to use git?
Do Alice and Bob both must initialize local git repository? If no, what are the alternative?
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Problem 5
You will learn some basic usages of Vagrant in your projects.
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