Consider the following illustration of a proxy server, Client Client Client Transmission rate R Proxy Cache Server Transmission rate: R Internet Web Server Assume that HTTP messages containing objects are 1 KB and that HTTP messages not containing objects can be ignored as they do not produce a significant delay. Also, assume the transmission rate of the proxy server, Rp = 25 Mb/s, and the transmission rate of the webserver is Rs = 14 Mb/s. If clients transmit on average 1500 HTTP requests per second and the proxy server has a cache hit rate of 70%, what is the traffic intensity at the link connecting the proxy server to the Internet? (provide your answer to 2 significant figures)

Consider the following illustration of a proxy server, Client Client Client Transmission rate R Proxy Cache Server Transmission rate: R Internet Web Server Assume that HTTP messages containing objects are 1 KB and that HTTP messages not containing objects can be ignored as they do not produce a significant delay. Also, assume the transmission rate of the proxy server, Rp = 25 Mb/s, and the transmission rate of the webserver is Rs = 14 Mb/s. If clients transmit on average 1500 HTTP requests per second and the proxy server has a cache hit rate of 70%, what is the traffic intensity at the link connecting the proxy server to the Internet? (provide your answer to 2 significant figures)

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

See similar textbooks

Related questions

Q: A http 1.1 browser need to retrieve two images Img1(1000 bytes) and Img2 (10 bytes) specified…

A: Given Img1 size is 1000 bytes Img2 Size is 10 bytes Bandwidth = 10000 bytes/sec Connection…

Q: A host-to-host link may carry numerous packets. Please submit a schedule of all tasks needed to…

A: When it comes to shipping goods, a host-to-host link can carry numerous packets (or) shipments. To…

Q: Consider the three-hop scenario shown below, where the first and third links have capacity R, and…

A: in hop-by-hop congnetion control just because of buffer overflow the sender does not perform the…

Q: The figure shows a TCP transaction. Assume Host A always has data to send, and each packet has size…

A: A) Here since 2nd packet is lost, ACK#1 = ACK#2 = ACK#3 =100 (sequence number of 2nd packet)…

Q: Assume we have a client using a web browser that is directly connected to a web server. We are…

A: A web browser is a software application that allows users to access and interact with information on…

Q: Even while FTP demands confirmation of successful file delivery, it does not provide the server a…

A: Despite the fact that FTP needs verification that a file has been properly transferred to a client,…

Q: Suppose an HTML file references two very small objects on the same server (total 3 object including…

A: Introduction The Hypertext Transfer Protocol (HTTP) is indeed an application layer protocol that…

Q: For NAT Network Address Translation Scenario: Jenny Bello is a small business owner selling and…

A: We need to answer questions related to private IPv4 address.

Q: If DNS looks up occur every 10 minutes and the HTTP file references 8 items each time, how long…

A: One of the two forms of HTTP connections is called Non Persistent, and it's also known as HTTP 1.0.…

Q: The address of a class B host is to be split into subnets with a 6-bit subnet number. What is the…

A: A Class B network has 16 bits reserved for the network portion and 16 bits reserved for the host…

Q: f a DNS lookup is performed every 10 minutes and an HTTP file references 8 objects each time, how…

A: Assuming that Non-persistent HTTP with no concurrent TCP connections means that a new TCP connection…

Q: Consider the following illustration of a proxy server, Client Client Client Transmission rate R…

A: To calculate the traffic intensity at the link connecting the proxy server to the Internet, we need…

Q: P9 Consider Figure 2.12, for which there is an institutional network connected to the Internet.…

A: In this question we have to calculate the total average response time for a network scenario…

Q: Question 2 . The non-persistent HTTP protocol executes six main steps in order to establish a…

A: In this question we have to understand about the six steps involved order to establish a connection…

Q: Maximum Transmission Unit (MTU): Longest prefix matching: IP Fragmentation: Consider sending a…

A: We need to find the length, ID, fragment flag, and offset for the given scenario.

Q: How long does it take for HTTP with persistent pipelined connection pad the entire page including…

A: HTTP is the hypertext transfer protocol used as a secure protocol to send the data from one user to…

Question

Consider the following illustration of a proxy server,
Client
Client
Client
Transmission rate R
Proxy Cache Server
Transmission rate: R₂
Internet
Web Server
Assume that HTTP messages containing objects are 1 KB and that HTTP messages not containing objects can be ignored as they do not produce a significant delay. Also, assume the transmission rate of the proxy server, Rp = 25 Mb/s, and the transmission
rate of the webserver is Rs = 14 Mb/s. If clients transmit on average 1500 HTTP requests per second and the proxy server has a cache hit rate of 70%, what is the traffic intensity at the link connecting the proxy server to the Internet? (provide your answer to 2
significant figures)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

Consider a local area network (LAN) with multiple stations connected to the same bus using the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol for medium access control. Assume that each station has a packet to transmit and follows the CSMA/CD protocol to access the medium. The first station to sense the medium finds it idle and starts transmitting its packet. The second station also senses the medium as idle and starts transmitting its packet, but halfway through the transmission, it detects a collision with the first station’s packet. After detecting the collision, the second station follows the backoff and retransmission procedure specified by the CSMA/CD protocol. Assume that the backoff algorithm uses binary exponential backoff with a maximum number of retries of 10 and that the slot time is 512 bit times. (a) What is the minimum number of slots the second station must wait before attempting to retransmit its packet after detecting the collision? Show…
There is currently no in-built method in FTP for tracking the delivery of files to end users. File Transfer Protocol (FTP) depends on another protocol operating at the Transport layer of the TCP/IP stack to enable a smooth data exchange.
Only typing answer Please explain step by step without table and graph thankyou
Q: Imagine a Web server that maintains a table in which client IP addresses are mapped to the most recently accessed Web pages. When a client connects to the server, the server looks up the client in its table, and if found, returns the registered page. Is this server stateful or stateless?
6. Delays. A user in Madagascar, connected to the internet via a 100 Mb/s (b-bits) connection retrieves a 250 KB (B-bytes) web page from a server in Tokyo, where the page references three images of 500 KB each. Assume that the one-way propagation delay is 82 ms and that the user's access link is the bandwidth bottleneck for this connection. a. Approximately how long does it take for the page (including images) to appear on the user's screen, assuming non-persistent HTTP using a single connection at a time? (For this part, you should ignore queueing delay and transmission delays at other links in the network) How long does it take if the connection uses persistent HTTP (single connection)? b. c. Suppose that user's access router has a 4 MB buffer (B-byte) on the link from the router to the user. How much delay does this buffer add during periods when the buffer is full? d. Assume a cache rate of 45% on the information received by the user in Madagascar from the Tokyo server. How does…
In certain cases, applications may make advantage of services provided by both of these transport-layer protocols (UDP or TCP). Because of this, how can a computer determine whichever tier of the transport stack is responsible for sending a packet?
A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. Data sent through the internet, such as a web page or email, is in the form of data packets. A packet is typically forwarded from one router to another router through the networks that constitute an internetwork (e.g. the Internet) until it reaches its destination node.How does a router distribute bandwidth in networks.
True or false 6. Before sending a data packet into a packet-switching network, the source must determine all of the links that the packet will traverse between source and destination. 7. With non-persistent connections between a web browser and a web server, it is possible for a single TCP segment to carry two distinct HTTP request messages.
Suppose end system A wants to send a large file to end system B. At a very high level, describe how end system A creates packets from the file. When one of these packets arrives to a router, what information in the packet does the router use to determine the link onto which the packet is forwarded? Why is packet switching in the Internet analogous to driving from one city to another and asking directions along the way?
FTP doesn't have a built-in method for tracking the progress of files that have been sent to clients. File Transfer Protocol (FTP) depends on a different protocol at the TCP/IP architecture's Transport layer to guarantee a successful transfer.
Despite the fact that FTP requires independent verification of successful file delivery, the protocol does not offer a mechanism for servers to independently monitor this information on their own. The success of the delivery is dependent on the File Transfer Protocol (FTP), which is used by the TCP/IP protocols of the transport layer.
Delays. A user in Madagascar, connected to the internet via a 100 Mb/s (b=bits) connection retrieves a 250 KB (B=bytes) web page from a server in Tokyo, where the page references three images of 500 KB each. Assume that the one-way propagation delay is 82 ms and that the user’s access link is the bandwidth bottleneck for this connection. a.) Approximately how long does it take for the page (including images) to appear on the user’s screen, assuming non-persistent HTTP using a single connection at a time? (For this part, you should ignore queueing delay and transmission delays at other links in the network)b.) Assume a cache rate of 45% on the information received by the user in Madagascar from the Tokyo server. How does this affect your answer in a? Show your work.