Question

Computer Networks

This elementary problem begins to explore propagation delay and transmission delay, two central concepts in data networking. Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to Host B.

(d) Suppose Host A begins to transmit the packet at time t=0. At time t= dtrans, where is the last bit of the packet?

(b) Determine the transmission time of the packet, dtrans, in terms of L and R.

(e) Suppose dprop is greater than dtrans. At time t=dtrans; where is the first bit of the packet?

Suppose dprop is less than drans. At time t=d trans, where is the first bit of the packet?

(c) Ignoring processing and queuing delays, obtain an expression for the end-to-end delay.

(a) Express the propagation delay, d prop; in terms of m and s.

(g) Suppose s=2.5 * 10°, L=120 bits and R=56 kbps. Find the distance, m, so that dprop equals dtrans -

Verified

### Question 42446

Computer Networks

a) Show how stored media can be streamed over the internet using the RTSP Client-server application layer protocol
b) Compare and contrast the use of TCP and UDP as transport laver protocols for streaming applications

### Question 42445

Computer Networks

a) Identify the key functions of the network layer. Justify your choices
b) Explain the operation of the ARP: Address Resolution Protocol.
c) Compare and contrast Circuit and Packet switching.

### Question 42444

Computer Networks

a) Sketch a diagram to show the TCP/IP protocol stack
b) Explain the role of each layer in your diagram.
c) Explain why TCP/IP rather than the OSI 7-layer model has become the dominant network protocol model.

### Question 39004

Computer Networks

Describe how the above forwarding table determines the appropriate link interface for datagrams with destination addresses: SHOW & EXPLAIN YOUR WORK.

### Question 39003

Computer Networks

s]What is maximum number of hosts in this network?

### Question 39002

Computer Networks

2. [20 points]Consider a VC network with a 2-bit field for the VC number. Suppose that the network wants to set up a virtual circuit over four links: link A, link B, link C and link D.Suppose that each of these lin ks is currently carrying two other virtual circuits, and theVC numbers of these other VCs are as follows:
In answering the following questions, keep in mind that each of the existing VCs may only betraversing one of the four links.
a. If each VC is required to use the same VC number on all links along its path, whatVC number could be assigned to the new VC?
b. If each VC is permitted to have different VC numbers in the different links along its path (so the forwarding tables must perform VC number translation), how many different combinations of four VC numbers (one for each of the four links)could be used?

### Question 39001

Computer Networks

1. [10 points]lt has been said that when IPV6 tunnels through IPV4 routers, IPV6 treats theIPV4 tunnels as link-layer protocols. Do you agree with this statement? Why or why not?

### Question 37150

Computer Networks

3. (5 points) In the aftermath of the attack, what are your recommendations to the company?

### Question 37149

Computer Networks

2. (5 points) In what ways were the company's operating procedures deficient in responding to this attack? In what ways were they adequate? What additional procedures might have been in place to better handle the attack?

### Question 37148

Computer Networks

1. (5 points) How well did the iPremier Company perform during the 75-minute attack? From your perspective, what are the reasons of the company's performance?