Consider a local network with a 1 Gbps access link to the Internet. Hosts on this network areaccessing resources with an average size of 2 MB from a distant server at an average rate of 50requests per second.a.What is the link utilization of the access link to the internet?b.Suppose these requests were to go through a caching proxy server. What would thelink utilization to the internet be if half of all requests were served from the cache of the proxyserver?с.resources never being needed for example.) Would this still provide any advantages to the enduser? Would there be any disadvantages to the end user?Suppose the proxy server could not serve any content from cache (due to the same

The LAN is mainly of two types wired LAN and wireless LAN. The wired LAN uses switches, servers, and…

Consider a local network with a 1 Gbps access link to the Internet. Hosts on this network are accessing resources with an average size of 2 MB from a distant server at an average rate of 50 requests per second. a. What is the link utilization of the access link to the internet? b. link utilization to the internet be if half of all requests were served from the cache of the proxy server? Suppose these requests were to go through a caching proxy server. What would the с. resources never being needed for example.) Would this still provide any advantages to the end user? Would there be any disadvantages to the end user? Suppose the proxy server could not serve any content from cache (due to the same

Consider a local network with a 1 Gbps access link to the Internet. Hosts on this network are accessing resources with an average size of 2 MB from a distant server at an average rate of 50 requests per second. a. What is the link utilization of the access link to the internet? b. link utilization to the internet be if half of all requests were served from the cache of the proxy server? Suppose these requests were to go through a caching proxy server. What would the с. resources never being needed for example.) Would this still provide any advantages to the end user? Would there be any disadvantages to the end user? Suppose the proxy server could not serve any content from cache (due to the same

Comptia A+ Core 1 Exam: Guide To Computing Infrastructure (mindtap Course List)

10th Edition

ISBN:9780357108376

Author:Jean Andrews, Joy Dark, Jill West

Publisher:Jean Andrews, Joy Dark, Jill West

Chapter8: Network Infrastructure And Troubleshooting

Section: Chapter Questions

Problem 8TC

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Similar questions

In a network scenario, access link rate is 2 Mbps, RTT from the company router to server is 2 sec and web object size is 100K bits. If the average request rate from browsers to origin servers is 18 requests per second, what is the access link utilization? What are the problems associated with high link utilization? If a cache server with hit rate of 60% is used, what is the access link utilization?
Suppose Host A wants to send a large 8 million bytes of file to Host B. The path from Host A to Host B has three links, of rates R1 = 1.5 Mbps, R2 = 2 Mbps, and R3 = 1 Mbps. Assuming no other traffic in the network. Roughly how long will it take to transfer the file to Host B?
Suppose Host A wants to send a large file to Host B. The path from Host A to Host B has three links, of rates R1=500 kbps, R2=2 Mbps, and R3=1 Mbps a. Assuming no other traffic in the network, what is the throughput for the file transfer? b. Suppose the file is 4 million bytes. Dividing the file size by the throughput, roughly how long will it take to transfer the file to Host B? c. Repeat (a) and (b), but now with R reduced to 100 kbps.
Consider a short, 10-meter link, over which a sender can transmit at a rate of 150 bits/sec in both directions. Suppose that packets containing data are 100,000 bits long, and packets containing only control (e.g., ACK or handshaking) are 200 bits long. Assume that N parallel connections each get 1/N of the link bandwidth. Now consider the HTTP protocol, and suppose that each downloaded object is 100 Kbits long, and that the initial downloaded object contains 10 referenced objects from the same sender. Would parallel downloads via parallel instances of non-persistent HTTP make sense in this case? Now consider persistent HTTP. Do you expect significant gains over the non-persistent case? Justify and explain your answer
1. Suppose two hosts, A and B, are separated by 30,000 kilometers and are connected by a direct link of R = 3 Mbps. Suppose the propagation speed over the link is 2.5 x 108 meters/sec. a. Calculate the bandwidth-delay product, R _ dprop. b. Consider sending a file of 900,000 bits from Host A to Host B. Suppose the file is sent continuously as one large message. What is the maximum number of bits that will be in the link at any given time?
Question 9 Suppose Host A wants to send a large file to Host B. The path from Host A to Host B has three links, of rates R1 = 1,024 kbps, R2 = 2,048 kbps, and R3 = 10 Mbps. Assuming no other traffic in the network, how long (in seconds) will it take to transfer a 50 KiB file? Disregard propagation, processing, and queuing delays. Full explain this question and text typing work only We should answer our question within 2 hours takes more time then we will reduce Rating Dont ignore this line
suppose two hosts, A and B, are separated by 20,000 kilometers and are connected by a direct link of R = 2 Mbps. Suppose the propagation speed over the link is 2.5 x 108 meters/sec. 1. Calculate the bandwidth-delay product, R x dprop. 2. Consider sending a file of 800, 000 bits from Host A to Host B. Suppose the file is sent continuously as one large message. What is the maximum number of bits that will be in the link at any given time? 3. Provide an interpretation of the bandwidth-delay product?
Suppose an HTML file references two very small objects on the same server (total 3 object including the HTML file). Neglecting transmission times, how much time elapses for all objects to be loaded/received in a non-persistent connection scenario. Assume that the round-trip delay is 10ms for each back and forth communication (even for establishing TCP connection)
Consider a web page whose base file is of size S1 = 10 KB. Assume that the web page consists of N = 20 inline objects each of size S2 = 100 KB. Assume that the round-trip time to the web server is T = 100 ms and the bottleneck capacity is C = 10 Mbps. Ignore any packetization delays and header overhead.a. Assuming non-persistent HTTP is used with a single TCP connection, how long does it take to download the web page?b. Assuming non-persistent HTTP is used with 4 parallel TCP connections, how long does it take to download the web page?c. Assuming pipelined, persistent HTTP is used, how long does it take to download the web page? ”Pipelined” means requests for multiple objects can be sent back-to-back on the same connection.d. Assuming non-pipelined, persistent HTTP with 2 parallel TCP connections is used, how long does it take to download the web page? Assume that the 2 parallel connections equally share the total available bandwidth C.
P5. Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows: (refer to first image) a. Provide a forwarding table that has five entries, uses longest prefix matching, and forwards packets to the correct link interfaces. b. Describe how your forwarding table determines the appropriate link interface for datagrams with destination addresses: (refer to second image)
Question 3: An educational institution has an access network whose operating parameters are as follows: access link to originating servers’ rate: 15.4 Mbps RTT from institutional router to server: 2 sec Web object size: 100K bits Average request rate from browsers to origin servers: 150/sec average data rate to browsers: 45.0 Mbps Institutional access network speed: 1Gbps. 3.1. You are requested to provide the performance of the institutional access network in terms of• LAN utilization• Access link utilization• End-to-end delay from the access network to the origin servers. Note: Assume that the requests from the web client to the originating web servers are of the order of 2GB of data on average. 3.2. Assuming that the institution would like to install a web cache in its access network with a cache hit rate is 0.65, you are asked to recompute the new performance of the access network in terms of:3.2.1. LAN utilization3.2.2. Access…
A connection between two servers may transport multiple packets simultaneously. Please break down for me how much time is consumed on each phase of goods processing. Should the duration of one delay be predetermined, while the duration of the other delay is situation-dependent?