HW1 NET 413 Fall 2023

Computer networking subject rcs817

Question 19 100 75 85 60 70 10) 70 40 50 Question 01: The figure above assumes using the full-network broadcast routing, by looking at the representation, anwer the following questions: - Is there any issue with the routing (Yes, No)? - What is this problem (name the problem if applicable): - What is the solution for the problem (ifr any): • Question 02: Fill in the following: - The routing protocol is the best evaluated and tuned protocol for WSN. problem happens when a node stop working partially. - In the attack, the WSN is subverted by a malicious node that uses fake identities. a signal is randomly sampled instead of continuously. - In - The data ensures that services offered by WSN must be available once needed. - The main advantage of In-Network Processing and Data Aggregation is - The clustering techniques have been developed to AMoving tD another question will save this responae.

In distance vector routing algorithms, routers exchange information with their neighbors about the links costs. A) True False

Consider the following virtual circuit network with three reserved virtual circuits: уC1: H1, А, С, Е, Н2 VC2: H3, A, F, D, H4 ус3: НЗ, А, F, D, E, H2 Host H4 Host H3 Нost H2 Host H1 Draw the routing table of router D and the routing table of router C. *you may design a table using the HTML editor or write the content of routing table record by record (record per line).

The Routing Information Protocol (RIP) is an intradomain routing based on routing. * link state distance vector path vector none of the above The metric used by is the hop count. * OSPF RIP BGP none of the above

A router interconnects a subnet, where all the interfaces of the subnets must have the prefix 164.132.62/24. suppose that the Subnet is required to support up to 60 interfaces, provide a network address that satisfies the above.

Computer Networks

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Do not plagarise please. Write your own answer Q. Describe the characteristics of the link-state and the distance-vector routing protocols and their uses in internal and external routing protocols.

Using packet tracer, implement a network that has the following components: 1- At least five routers 2- At least 7 subnets 3- At least 12 PCs 4- At least 4 switches 5- Use RIP routing protocol To assign IP addresses of the routers and PCs, use the IP address from your ID as follows Assume your id is 118zyxw, Consider the numbers z, y, x and w as deciemal You have the subnet 118.0.0.0/24 If your ID is 1181234 then the IP is 118.0.0.0/24 Use this subnet to get at least 7 subnets.

A=32, B=33, C=34, D=35 x1, y1, z1 are the interfaces for the router gateway, while x2, x3, y2, y3, z2, z3 are for the router interface Find the Routing Table R1, R2, and R3 using the following table! Destination Next Hop Interface       With the Routing Table that you have specified in point a, which path will PC1B take when communicating with PC2B and PC3B In theory there is a routing table for Network Address 0.0.0.0 with a Subnet Mask of 0.0.0.0, explain the function of this routing table? Does the image network require routing at point c? Why?

Refer to the network figure above, showing two Ethernet Subnets connected through an IP Router, answer the following question 1-5. The devices in each subnet are connected locally to each other through layer two intermediate devices such as Ethernet switch and ethernet hub. For each device in the subnets, both its Internet Protocol (IP )address and its MAC address (also called the Physical address or the Ethernet address are shown. The subnet mask used by all devices is 255.255.255.240 (which is the same as the prefix length “/28”). 1. If Client #1 wants to send a broadcast packet to all the devices on the left subnet (containing client #1, client #2, client #3) what destination IP address should be used? (Mention in both binary and decimal format.)  2. What is the first and last assignable IP address for the left subnet above (containing client #1 and #3)? (Mention in both binary and decimal format.)

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.

MC9: In wireless LAN communication, MACA is widely used. In this protocol, in order to avoid collision, a sender can send sender is granted the privilege to send a frame to the receiver only after it receives request signal to a receiver. The replied from the receiver. RTS, RTS CTS, CTS RTS, CTS CTS, RTS

1. Below is a nested MPLS network by MTN. With the assumption that Customer 6 (C6) is connected to Router 6 (R6), execute a Dijkstra Algorithm on a Link State routing to determine the shortest path for Customer 6 to transmit packets to every other Customer/Destination connected to the rest of the Routers on the network.       (a) i. Tabulate the executed iteration for the Dijkstra Algorithm using the table below.                                                                                                                                                              Iteration Nodes R1 R2 R3 R4 R5 R7 R8 R9 R10 0 [6]                   1 [6,3]                   2 [6,3,2]                   3 [6,3,2,1]                   4 [6,3,2,1,4]                   5 [6,3,2,1,4,5]                   6 [6,3,2,1,4,5,7]…

Cloud Computing:

Assume the maximum transmission unit (or MTU) of an IP packet on 100 Mbps Ethernet is set at 1500 bytes. Also, assume we are sending our file using IPv6 at the Network layer and UDP at the Transport layer. A typical IPv6 header consists of 40 bytes, a UDP header consists of 8 bytes. Answer the following three questions based on the information provided above. For all answers, enter a decimal integer value without formatting (no commas). 1. How many packets do we have to send in order to transfer a file of 24KB over 100 Mbps Ethernet? packets 2. How many bytes do we have to send at the network layer in order to transfer the above file entirely? bytes 3. How many bytes do we have to send at the data link layer in order to transfer the above file entirely? Assume that the Ethernet header is 14 bytes and the frame checksum is 4 bytes. bytes

Use this figure as a reference, if the values ​​are A, B, C and D (3rd octet) with the following conditions:• Value A = 37• Value B = 38• Value C = 39• Value D = 40X1, y1, z1 are the interfaces for the router gateway, while x2, x3, y2, y3, z2, z3 are for the router interface a. Find the Routing Table R1, R2, and R3 using the following table! Destination Next hop Interface

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Consider a datagram network using 32-bit host addresses, i.e., IP addresses range from 0 to 255. Suppose a router uses longest prefix matching and has the following forwarding table:   For each of the four interfaces, please give the associated range of destination host address and the number of addresses in the range.

In link state routing algorithms, all routers share the same information about the complete topology. A) True B False

Question A and B

SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts. A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. You have defined the packet filter rule set shown in the table below. These rules permit and/or deny inbound and outbound traffic between the user agent and the mail server. Describe the purpose of each packet filter rule in the table.  Rule Direction Source Address Destination Address Protocol Destination Port Action A2 In External Internal TCP 25 Permit B2 Out Internal External TCP > 1023 Permit C2 Out Internal External TCP 25 Permit D2 In External Internal TCP > 1023 Permit E2 Either Any Any Any Any Deny

19. ARP is used for: O packet path determination O finding of a mapping IPV6 → MAC address O finding of a mapping IPV4 → MAC address O finding of a mapping IPV4 → TCP address

Question 8 OSPF is a link state Intra AS routing protocol. (A) True B) False

Which statements about routing protocols are true. choose 2 A) OSPF is a distance vector protocol. B) RIPv1 does not support classless routing. C) IGRP supports classless routing. D) EIGRP supports unequal cost load balancing.

In the figure below a router is transferring packets, each of length L= 5 000 bits over a link with a transmission Rate R= 1 Mbps to another router at the other end of the link. The speed prorogation of the light signal on the link is 3x108 m/s. The length of the link is 1 Km. L: packet length (in bits) R: link transmission rates (Mbps) Queue of packets waiting for output link 1-Calculate the total transmission delay. 2- How many packets can be transmitted in one second.

Below is a nested MPLS network by MTN. With the assumption that Customer 6 (C6) is connected to Router 6 (R6), execute a Dijkstra Algorithm on a Link State routing to determine the shortest path for Customer 6 to transmit packets to every other Customer/Destination connected to the rest of the Routers on the network.     Tabulate the executed iteration for the Dijkstra Algorithm using the table below.                                                                                                                                                              Iteration Nodes R1 R2 R3 R4 R5 R7 R8 R9 R10 0 [6]                   1 [6,3]                   2 [6,3,2]                   3 [6,3,2,1]                   4 [6,3,2,1,4]                   5 [6,3,2,1,4,5]                   6 [6,3,2,1,4,5,7]…

Below is a nested MPLS network by MTN. With the assumption that Customer 6 (C6) is connected to Router 6 (R6), execute a Dijkstra Algorithm on a Link State routing to determine the shortest path for Customer 6 to transmit packets to every other Customer/Destination connected to the rest of the Routers on the network.     Tabulate the executed iteration for the Dijkstra Algorithm using the table below.                                                                                                                                                              Iteration Nodes R1 R2 R3 R4 R5 R7 R8 R9 R10 0 [6]                   1 [6,3]                   2 [6,3,2]                   3 [6,3,2,1]                   4 [6,3,2,1,4]                   5 [6,3,2,1,4,5]                   6 [6,3,2,1,4,5,7]…

Computer Science question

Q10: RIP is . 1- None of the above 2- Link state protocol 3- Distance vector protocol 4- Exterior protocol Q11: Multi-area OSPF based network has more frequency of shortest Path First calculations 1- True 2- False Q12 In OSPF, the protocol responsible for establishing and maintaining neighbor relationships is called .