Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL is hot cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that n DNS
Q: With Network Address Translation, a router changes a private IP address in the IP header to the…
A: Translation of Network Addresses (NAT): When visiting the Website, we'll need one gateway, and then…
Q: In the process of fetching a web page from a server the HTTP request/response takes ______ RTTs. a.…
A: Here in this question we have asked that when we fetch the webpage from server the http…
Q: 5. In Figure 2-16 (page 62 of the textbook): a.) What will be the value in the destination port…
A: Each computer has an IP address. But there are many processes(applications) running in the computer.…
Q: An IP address can be written as a 32-bit number. For a class B network, the two most significant…
A:
Q: Consider an IPv4 subnet with private IP address space 166.111.8.0/24. If each IP interface in the…
A: Given: IP address Space: 166.111.8.0/24 This IP address can be divided into two parts as Network ID…
Q: If a host on a network has the address 172.16.45.10/28, what is the subnetwork this host belongs to?…
A: This question comes from Networking which is a paper of computer science. Let's discuss it in the…
Q: When a host on your network provides a service that necessitates the server always using a certain…
A: Introduction: A device's IP address is assigned when it establishes an internet connection or joins…
Q: If a host on a network has the address 172.16.45.10/28, what is the subnetwork this host belongs to?…
A: Solution:
Q: requires 40 hosts for its sales department. Given the IP Address 194.12.1.0 /24, design an optimal…
A: 194.12.1.0 /24 Here /24 means number of network bits is 24 and therefore number of host bits is 8.…
Q: Consider a scenario that is having an IP address 172.17.0.0, you need divide the network into 4…
A: Given: Consider a scenario that is having an IP address 172.17.0.0, you need divide the network…
Q: For the given Class C IP Address 202.5.6.0, Subnet the network So that you have 10 subnets each with…
A: Given- Class C IP address 202.5.6.0 Current mask= 255.255.255.0 Bits needs for 10 subnets =4 =24 =16…
Q: If DNS searching happens once every 10 minutes, and each time the HTTP file references 8 items, how…
A: Non-persistent HTTP: A non-persistent connection is terminated when the server sends the requested…
Q: When referring to the HTTP/2 protocol, it is stated that QUIC can be used, which means that UDP can…
A:
Q: Static IP addresses are used when a host on your network delivers a service that requires the server…
A: Introduction: A device's IP address is assigned when it establishes an internet connection or joins…
Q: Suppose a packet originates in a host that has an interface associated to address 142.103.6.5. The…
A: There will only be 1 source address and 1 destination address during all of its journey. First, when…
Q: For a class C network if IP address of a computer is 200.99.39.112 and subnet mask is…
A: Computer IP 200.99.39.112 (200.99.39.01110000) Subnet mask + 255.255.255.224…
Q: 2.2-8 A detailed look at an HTTP reply. Suppose now the server sends the following HTTP response…
A: Yes, the server will close this connection because version 1.0 of HTTP is being used, and TCP…
Q: Suppose a user has a webserver running at a machine with the name www.nadir.edu.net.pk and IP…
A: Suppose a user has a webserver running at a machine with the name www.nadir.edu.net.pk and IP…
Q: Suppose a host wants to establish the reliability of a link by sending packets and measuring the…
A: Introduction: TCP connection: Connection-oriented mechanism Helps to establish a two-way…
Q: If a host on a network has the address 172.16.45.30/30, what is the subnetwork this host belongs to?…
A: Given IP address is 172.16.45.30/30 Total number of bits are 32, network id bits are 30 and host id…
Q: 50- An organization currently requires 40 hosts for its sales department. Given the IP Address…
A: The subnet mask is a technique that is used to increase the network range by dividing the network…
Q: 1-Given an IP address of 195.50.50.0/29. Excluding the gateway address, how many hosts can have IP…
A:
Q: In link state routing, flooding allows changes to be recorded by: some routers neighbor routers only…
A: Please find the answer below :
Q: If a class B IP address has the subnet mask 255.255.248.0 then how many maximum hosts will be…
A: 1.2-2=30 subnets2.2-2=2,046 hosts per subnet3.256-248=8.0, 16.0, 24.0, 32.0, 40.0, 48.0, 56.0, 64.0,…
Q: In case of Network Address Translation (NAT), the host at private IP address 192.168.100.3 is…
A: This is network related question.
Q: Look over your received e-mails, and examine the header of a message sent from a user with a .edu…
A: Examining header of a message: “Yes”, one will be able to see the sender's IP address for a user…
Q: Assume you use your Web browser to access a Web page by clicking on a link. Because the IP address…
A: Intro Since the IP address is not in the local cache, a DNS lookup is necessary. The total time to…
Q: A class B network address of 191.1.0.0 is given and you need to create 4 subnets with minimum hosts…
A: Class B network address is 191.1.0.0 Class B => Default mask of /16 (255.255.0.0)
Q: For the following IP address, 1. 210.67.17.30 2. 170.50.1.17 3. 245.17.0.23 4.…
A: Answer 1: Given, IP address = 210.67.17.30 The IP class of 210.67.17.30 is Class C Starting host…
Q: To answer the following question please use the following IP address scheme. Given IP address:…
A: Given IP address: 86.123.204.30/26 Number of mask bits: 26 Number of host bits, h: 32 - 26 = 6…
Q: What is the subnet mask of the smallest subnet that will accommodate 63 hosts? Blank 1
A: Given: Find subnet mask?
Q: DNS is a global system for changing IP addresses to human-readable domain names. When a user tries…
A: DNS servers generate a DNS record to give essential information about a domain or hostname,…
Q: Given a scenario where there three routers R1, R2 and R3. R1 is connected to Switch1, then Switch1…
A: The solution for the above-given question is given below:
Q: 13. Wireshark filter most suitable for observation of HTTP responses from the WWW server…
A: a) ip.src == 194.29.168.142
Q: in the folllowing ip address 141.132.196.33/15 how many bits are allocated to the node portion of…
A: Here in this question we have given an ip address 141.132.196.33/15 and we have asked that how many…
Q: A host in class C does not know its IP address and wants to send a message to a bootstrap server to…
A: We are going to understand a situation where a host C doesn't know its IP address and wants to…
Q: Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the…
A: Actually, HTTP stands for Hyper Text Transfer Protocol.
Q: An ISP has the following block of addresses 132.204.192/20. The manager of this ISP hired you to…
A: The answer is
Q: In Version 4 of the Internet Protocol (IPV4), an IP address is a string of 32 bits. It begins with a…
A: answer is
Q: Suppose that the RTT delay between a client and an HTTP server is 30 msecs; the time a server needs…
A: RTT: Suppose that the RTT delay between the client and an HTTp server is twenty m secs; the time a…
Q: The connection between all the devices of the network In a mesh topology is multipoint False True…
A: 1. The Connection between all the devices of the network in a mesh topology is multipoint is a…
Q: Given the IP address 180.15.128.0/20. Now, using the given IP address space create five subnets in…
A: Actually network is all devices communicate with each other.
Q: If DNS searching happens once every 10 minutes, and each time the HTTP file references 8 items, how…
A: Introduction : HTTP mostly relies on TCP for its transport protocol , providing a…
Q: address, 2041:0000:140F:079F:0000:0000:0000:131B? c) Suppose a router has built up the routing table…
A: a. Characteristics of IP protocol i. Does not require end to end connection for communication flow.…
Q: Consider the network shown below. 10:D4 E1:A8.97 FO 20:FF 3A:BC:01:4E АВ 22:АА.ВB:34:01 (3) Switch…
A: Given network contains many hosts with different MAC and IP addresses. Whenever, the data transmits…
Q: What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses…
A: Given: What is the maximum number of IP addresses that can be assigned to hosts on a local subnet…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL isnot cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that n DNS servers arevisited before your host receives the IP address from DNS; the successive visits incur an RTT of RTT1, . . ., RTTn.Further suppose that the Web page associated with the link contains exactly one object, consisting of a small amount ofHTML text. Let RTT0 denote the RTT between the local host and the server containing the object. Assuming zerotransmission time of the object, how much time elapses from when the client clicks on the link until the client receivesthe object?Suppose a user has a webserver running at a machine with the name www.nadir.edu.net.pk and IP address 10.10.10.10. The authoritative dns address for this web server is with the name dns.nadir.edu.net.pk and with IP address 11.11.11.11. a. Write all the steps involved in inserting this webserver name in the DNS hierarchy. b. Write all the steps involved in retrieving the IP address of www.nadir.edu.net.pkSuppose a user has a webserver running at a machine with the name nadir.edu.net.pk and IP address 10.10.10.10. The authoritative DNS address for this web server is with the name dns.nadir.edu.net.pk and with IP address 11.11.11.11. Write all the steps involved in retrieving the IP address of nadir.edu.net.pk
- Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL is not cached in your localhost, so a DNS lookup is necessary to obtain the IP address. Suppose that n DNS servers are visited before your host receives the IP address from DNS; the successive visits incur an RTT of RTT1, . . ., RTTn. Further suppose that the Web page associated with the link contains exactly one object, consisting of a small amount of HTML text. Let RTT0 denote the RTT between the local host and the server containing the object. Assuming zero transmission time of the object, how much time elapses from when the client clicks on the link until the client receives the object? Justify your answer.Suppose that the RTT delay between a client and an HTTP server is 30 msecs; the time a server needs totransmit an object into its outgoing link is 0.85 msecs; and any other HTTP message not containing an objecthas a negligible (zero) transmission time. Suppose the client again makes 100 requests, one after the other,waiting for a reply to a request before sending the next request.Assume the client is using HTTP 1.1 and the IF-MODIFIED-SINCE header line. Assume 50% of the objectsrequested have NOT changed since the client downloaded them (before these 90 downloads are performed)How much time elapses (in milliseconds) between the client transmitting the first request, and the completionof the last request?In order to implement a DNS amplification attack, the attacker must trigger the creation of a sufficiently large volume of DNS response packets from the intermediary to exceed the capacity of the link to the target organization. Consider an attack where the DNS response packets are 500 bytes in size (ignoring framing overhead). a. How many of these packets per second must the attacker trigger to flood a target organization using a 30-Mbps link? A 100-Mbps link? Or a 1-Gbps link? b. If the DNS request packet to the intermediary is 60 bytes in size, how much bandwidth does the attacker consume to send the necessary rate of DNS request packets for each of these three cases?
- Assume you use your Web browser to access a Web page by clicking on a link. Because the IP address for the related URL is not cached on your local host, a DNS search is required to acquire it. Assume that n DNS servers are contacted before your host obtains the IP address from DNS; each subsequent visit incurs an RTT of RTT1,..., RTTn. Assume that the Web page connected with the link has only one item, which is a little bit of HTML text. Let RTT0 represent the RTT between the local host and the server that has the item. Assuming that the item has a zero transmission time, how much time elapses between when the client clicks on the link and when the client receives the object?COM Assume a web browser at a client host (212.13.14.16) wants to send a message to a web server (156.10.10.2) but a firewall at the client's gateway (212.13.14.1) is configured to block all outgoing packets to 156.10.10.2. The client does have access to a VPN application (similar to the one used in the labs) and can use it to connect to a VPN server (130.16.10.2). Describe how the client should set up a tunnel to bypass the firewall so that the web browser can send a message to the web server (156.10.10.2). You must trace the pathway of the message originating at the web browser on the client host and headed to the VPN server explaining how it traverses through different layers (application, transport, network etc.) in the client host and finally reaches the VPN server application. You must also trace the relevant hops (i.e., the IP addresses) the packet navigates through along the way. You need not trace the reply message and you also don't need to focus on the encryption details.…A host on your network is said to have a static IP address if it offers a service that requires the server to always use the same IP address. This kind of IP address can only be used once. In the event when a certain IP address has to be assigned manually, which IP addressing technique is considered to be the most effective? Why is this the case, exactly?
- Suppose an HTTP client makes a request to the gaia.cs.umass.edu web server. The client has never before requested a given base object, nor has it communicated recently with the gaia.cs.umass.edu server. You can assume, however, that the client host knows the IP address of gaia.cs.umass.edu. How many round trip times (RTTs) are needed from when the client first makes the request to when the base page is completely downloaded, assuming the time needed by the server to transmit the base file into the server's link is equal to 1/2 RTT and that the time needed to transmit the HTTP GET into the client's link is zero? (You should take into account any TCP setup time required before the HTTP GET is actually sent by the client, the time needed for the server to transmit the requested object, and any propagation delays not accounted for in these amounts of time.) Choices A.0.5 RTT B.3.5 RTT C.1.5 RTT D.2.5 RTT E.0 RTTIf a DNS lookup happens every 10 minutes and an HTTP file references 8 objects each time, how long would Non-persistent HTTP with no concurrent TCP connections last?Use a text editor to create Extended Access lists to accomplish the following tasks. Again no Packet Tracer is needed for this lab.: Allow only web traffic to the company web server with IP address 10.1.2.3. Allow connections from from any IP address to access the SMTP port on the email server with IP address 10.1.2.2, but deny any other traffic. Block well-known Distributed Denial of Service tcp ports 6669, 6711,6712,6713,6714, 16660.
