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.pk

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.pk

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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Suppose 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
1. Encode the following message in base64 01010111 00001111 11110000 2. The following is a dump (contents) of a UDP header in hexadecimal format 0045DF0000580000 a. what is the source port number? b. what is the destination port number? c. what is the total length of the user datagram? d. what is the length of the data? e. what is the application layer protocol? 3.Why does the network-layer protocol need to provide packetizing service to the transport layer? 4. List four types of delays in a packet-switch network.
so given two printer, one of IP address is 200.23.16.202 and subnet mask is 255.255.255.224, and other one IP address is 200.23.16.170 and subnet mask is 255.255.255.224. Suppose the network that hosts the above printer is re-configured with other networks in the building. After re-configuration, the printer's IP address would remain the same but its network is changed with a new subnet mask, which is changed to 255.255.255.128. This means, even the printer's IP address looks the same, its network ID and host ID are different from those before re-configuration. Find the new network ID and host ID of this printer. You must write both in the standard dot-decimal format without attaching the subnet mask.
Suppose Alice with a Web-based e-mail account (such as Gmail) sends it message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice's host to Bob's host. Be sure to list the series of application -layer protocols that are used to movethe message between the two hosts.
Assume that Computer A, which is connected through an Ethernet cable to the Switch S1, is just powered on. The user opens a browser and then types a website address to receive the website from the Server (as shown in Figure 1). Write down all the important protocols that come into play by the time the first frame containing HTTP request reaches R1. (Note: Before HTTP frame, other frames have already been sent by other protocol(s).) Write down all the protocols with reference to the TCP Model as follows? Application Layer: Transport Layer: Internet Layer: Link Layer:
The following is a dump of a UDP header in hexadecimal format. 0513000D001DF315 a. What is the source port number? b. What is the destination port number? c. What is the total length of the user datagram? d. What is the length of the data? e. Is the packet directed from a client to a server or vice versa? f. What is the client process?
Implement a reverse DNS IPv6 sweeping program written in Golang, Java, or Python? What is reverse DNS how would it be done sweeping in ipv6 and ipv4?
Suppose Alice, with a Web-based e-mail account (such as Hotmail or Gmail), sends a message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice’s host to Bob’s host. Be sure to list the series of application-layer protocols that are used to move the message between the two hosts.
Let's say that Host C is running a Web server that listens on port 80. Suppose that this web server is able to maintain persistent connections and responds to requests from both Host A and Host B. Is Host C sending all of the requests over the same connection, or are there many sockets in use? Do each of them have port 80 even though they are broadcast over separate sockets? It's something you need to discuss and provide some clarification on.
Scenario There is design1.csv file attached to this router interfaces ip_on_interfaces R1 s1, fa1 10.0.2.1, 192.168.1.3 R2 s0 10.0.2.2, R3 s0, Fa0, s1 10.0.2.3, 192.168.4.3, 192.168.5.5 R4 s0, s2 10.0.2.4, 192.168.8.8, Write a Python script to generate configuration files automatically for each router in the first column. Example, for router R1, the configuration file name should be “r1_config.cfg” and so on. The configuration commands for router R1 are as follows, the other routers’ commands are similar, according to the design file: #configure terminal # hostname R1 # enable secret Pas$w0rD # interface s1 # ip address 10.0.2.1 # no shutdown # interface fa0/1 # ip address 192.168.1.3 # no shutdown # end
Let's pretend a computer sends a packet to another computer on the Internet at the network layer. A problem has occurred with the packet's logical destination address. Where should I send the package? When this occurs, how will the original computer find out?
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?