assn-3

58-  A network for a local office requires 4 LAN subnets as follows:      · Subnet A - North Office with 31 hosts;      · Subnet B - East Office with 15 hosts; and      · Subnet C - South Office with 7 hosts.      · Subnet D – West Office with 4 hosts.   Given the IP Address 192.168.15.0 /24 and above described network requirements: 1.     Design an optimal address scheme using Variable Length Subnet Mask (VLSM) method What will be the network address of Subnet D? Select one: A. 192.168.15.232 B. 192.168.15.191 C. 192.168.15.112 D. 192.168.15.240

53-  A network for a local office requires 4 LAN subnets as follows:      · Subnet A - North Office with 31 hosts;      · Subnet B - East Office with 15 hosts; and      · Subnet C - South Office with 7 hosts.      · Subnet D – West Office with 4 hosts.   Given the IP Address 192.168.15.0 /24 and above described network requirements: 1.     Design an optimal address scheme using Variable Length Subnet Mask (VLSM) method; and What will be the network address of Subnet B? Select one: A. 192.168.15.64 B. 192.168.15.0 C. 192.168.15.32 D. 192.168.15.1

Computer Networks Assume the given class C IP Address, 192.168.0.X, where; X is 49 )Apply subnetting of 3 bits and write about: First and last valid IP of the subnet in which this IP 192.168.0.X belongs to. Sub-net mask of this IP after subnetting.

Question 5. Write a note on the following a. Compare the header format of IPv4 and IPv6. How tunneling is used to transition fromIPv4 to IPv6?b. Use Dijkstra’s algorithm on the following network to find shortest paths. c. Data 01110001101010100 is received where receiver uses odd parity. Is the data corrupted.Justify your answerd. What are the three main classes of MAC protocols? Explain each a one or two linese. Give steps of ARP mapping from IP to MAC address.

A large number of consecutive IP addresses are available starting at 198.16.0.0. Sup- pose that four organizations, A, B, C, and D, request 4000, 2000, 4000, and 8000 ad- dresses, respectively, and in that order. For each of these, give the first IP address as- signed, the last IP address assigned, and the mask in the w.x.y.z/s notation. A router has just received the following new IP addresses: 57.6.96.0/21, 57.6.104.0/21, 57.6.112.0/21, and 57.6.120.0/21. If all of them use the same outgoing line, can they be aggregated? If so, to what? If not, why not? The set of IP addresses from 29.18.0.0 to 19.18.128.255 has been aggregated to 29.18.0.0/17. However, there is a gap of 1024 unassigned addresses from 29.18.60.0 to 29.18.63.255 that are now suddenly assigned to a host using a different outgoing line. Is it now necessary to split up the aggregate address into its constituent blocks, add the new block to the table, and then see if any reaggregation is possible? If not, what can be…

Supposed the scenario bellow, we have 3 networks to be submitted with the ip address 192.171.0.0/16.   Network 1 has 150 host, network 2 has 100 and network 3 has 7 host. VLSM Decompose the given ip address to these networks using VLSM, and write the ip adress and the subnet mask for router 1, switch 0 , switch 2 , switch 3 , PC0 , PC1 , PC2

P11. Consider a subnet with prefix 128.119.40.128/26. Give an example of one IP address (of form xxx.xxx.xxx.xxx) that can be assigned to this network. Suppose an ISP owns the block of addresses of the form 128.119.40.64/26. Suppose it wants to create four subnets from this block, with each block having the same number of IP addresses. What are the prefixes (of form a.b.c.d/x) for the four subnets?

Assume that a national ISP is assigned an IPv4 block which starts with 132.56.40.0/16 and creates 4 subblocks to be assigned to 4 local ISPs. What will be the /n value for local ISPs?

Question 3 3.1 An end device was given the IP address of 198.168.4.35/28. Consider this address and indicate:  3.1.1 The network ID/address to which the host belongs. 3.1.2 The network broadcast address to which the host belongs. 3.1.3 The total number of hosts available in the network.  3.1.4 The total number of networks. 3.2 Consider two neighbours, Alice and Bob. Each have wireless IPv4 routers with integrated NAT. Each neighbour connects their laptop to their own wireless router, and each uses appropriate utilities to examine the IP address of each laptop. They realise the laptops have the same IP address. 3.2.1 How is that possible? 3.2.2 Justify one reason that wide-spread deployment of IPv6 would remove the need for the NAT devices.

Assume that a large number of consecutive IP addresses are available starting at 198.16.32.0 and suppose that two organizations, A, B, C, and D, request 1000, 3000, 2000, and 4500 addresses, respectively, in that order. For each of these, give the first possible IP address within the assigned subnet, the last possible IP address within the assigned subnet, and the subnet representation in slash notation (w.x.y.z/s). In the imagine I have the answers but I am very confused on how to get them. Specially after A and B I do not undertand how the initial address of C is 198.16.64.0 how did that 64 happen??? Please explain all in detail. Thank you!

Computer Networks Assume the given class C IP Address, 192.168.0.X, where; X is 49. Apply subnetting of 3 bits and write about: Network and Broadcast IP of the subnet in which this IP 192.168.0.X belongs to First and last valid IP of the subnet in which this IP 192.168.0.X belongs to. Sub-net mask of this IP after subnetting.

21.) Consider the following configuration. ​ Computer “A”                   IP address:          172.16.100.100                   Subnet mask:     255.255.0.0 ​ Computer “B”                   IP address:          172.16.200.200                   Subnet mask:     /16   What should be done to allow these computers to send and receive data to and from each other?   A.) Nothing needs to be changed. B.) Delete the subnet mask from each computer. C.) A router must be configured and placed between the two computers. D.) Remove the hub between the two computers and replace it with a switch.

46-  An organization currently requires 40 hosts for its sales department. Given the IP Address 194.12.1.0 /24, design an optimal address scheme usingTradition Subnetting method, which will enable the connection of the sales department’s 40 hosts in one subnet and uses the remaining subnets for other departments’ hosts in the future. What will the broadcast address of 3rd subnet? Select one: A. 194.12.11.95 B. 194.12.1.128 C. 94.12.1.191 D. 194.121.1.192 E. 194.12.1.191

4)In the following IPsec ESP Tunnel model, Which parts are authenticated?     a ESP Header , IP Header , TCP header , Data , ESP Tailer are Authenticated    b New IP HEeader , ESP Header , IP Header , TCP header , Data , ESP Tailer are Autheniticated    c New IP HEeader , ESP Header , IP Header , TCP header , Data , ESP Tailer, ESP AUTH are Autheniticated    d  ESP Header , IP Header , TCP header , Data , ESP Tailer , ESP AUTH are Autheniticated

q no 5: In the above network diagram, IP and MAC addresses are given for network nodes. Suppose Host1 (Shahid) sends a datagram to Host2 (Khalid). What IP and MAC addresses (source and destination) will be written in IP and Data link layer headers respectively, for the following intermediate points from Host1 to Host2? Host1 to Router1 (R1) Router1 to Router2 (R2) Router2 to Host2

Suppose an ISP owns the block of addresses of the form 126.120.40.64/26. Suppose it wants to create four subnets from this block, with each block having the same number of IP addresses. Now answer the following:  a. What is the maximum number hosts each subnetwork can have?  b. What are the subnet addresses (of form a.b.c.d/x) for the four subnets?  c. What is the first usable IP address of first subnet?  d. What is the broadcast address of first subnet?  e. What is the last usable IP address of first subnet?

. Consider a network with prefix 182.168.56.128/26. Give an example of one IP address (of form xxx.xxx.xxx.xxx) that can be assigned to this network. Suppose an ISP owns the block of addresses of the form 170.168.56.64/26. Suppose it wants to create four subnets from this block, with each block having the same number of IP addresses. What are the prefixes (of form a.b.c.d/x) of the four subnets?

An ISP is granted a block of addresses starting with 150.80.0.0/14 . The ISP wants to distribute these blocks to customers as follows:A- the first group has 50 customers, each needs 1024 IP addresses. B- the second group has 4 customers, each needs 512 IP addressesC- the third group has 64 customers, each needs 16 IP addressesSo, Design all the subnets? And find the amount of available IPs after all allocations.

Consider the following diagram: A,B,C and D are subnets, R1, R2, and R3 are routers. Default signifies theentire rest of the internet. All 4 subnets each contain the same number of hosts.Consider the following routing table at R3: CIDR Mask Link 0.0.0.0/0 L4 128.4.6.0/24 L3 128.4.8.0/24 L5 1. If 128.4.6.0 is in A, what is the routing table at R1? 2. The ISP that owns all these networks is short on IP addresses, so theyuse a NAT router for R2. How many public IP addresses will C andD use together assuming they use as many private 10.X IP addresses asthey can? How many total public IP addresses will be used by the entirenetwork? Why doesn’t the ISP care about how many private IP addressesare used? 3. Fix R3’s routing table now that we are using NAT: 4. A node in C is given the IP address 10.0.0.1 and only sends and receivespackets on port 1234. A packet destined for this node reaches R2 witha source of (IP=128.4.6.6, Port=3000) and destination of (IP=128.4.8.0,Port=10000).…

In ICT infrastructure, which of the following statements is true about the use of User Datagram Protocol (UDP) in Voice over Internet Protocol (VoIP)? VoIP often uses UDP because it offers low latency and is better suited for real-time communication than TCP.   VoIP can use both TCP and UDP interchangeably, depending on the type of communication and the devices involved.   UDP is used in VoIP only when the network has low congestion, otherwise TCP is used to ensure data reliability.   VoIP always uses TCP to ensure that voice data is transmitted reliably.   UDP is not used in VoIP because it does not support real-time communication.

47-  An organization currently requires 40 hosts for its sales department. Given the IP Address 194.12.1.0 /24, design an optimal address scheme usingTradition Subnetting method, which will enable the connection of the sales department’s 40 hosts in one subnet and uses the remaining subnets for other departments’ hosts in the future.   What will be the first host address in 3rd subnet?  Select one: A. 194.12.1.190 B. 194.121.1.192 C. 194.12.11.191 D. 94.12.1.128 E. 194.12.1.129

Using the IP 135.11.2.96/12, efficiently figure out the network addresses of the following host configuration: 2021, 1022, 511, 450, 127, 60, 32, 12, 10, 8, 6, 4, 3, 2. Upload the tree picture.

3.2 Consider two neighbours, Alice and Bob. Each have wireless IPv4 routers with integrated NAT. Each neighbour connects their laptop to their own wireless router, and each uses appropriate utilities to examine the IP address of each laptop. They realise the laptops have the same IP address. 3.2.1 How is that possible? 3.2.2 Justify one reason that wide-spread deployment of IPv6 would remove the need for the NAT devices.

Suppose you have the following network requirements, for Given an IP address and mask of 9.0.0.0/8, design an IP addressing scheme using VLSM? How is the efficiency of this method achieved? Use the topology in Figure to answer the questions. a. Network 1 needs to support 330 host addresses. b. Network 2 needs to support 62 host addresses. c. Network 3 needs to support 2 host addresses. d. Network 4 needs to support 520 host addresses. e. Network 5 needs to support 230 host addresses. f.  Network 6 needs to support 62 host addresses. g. Network 7 needs to support 2 host addresses. h. Network 8 needs to support 2 host addresses.

A) IPv6 is now being deployed globally. Including the Interframe Gap, calculate themaximum data utilisation of TCP/IPv6 packets over a 100 Mbps Ethernet network.b) SLTP is a new transport protocol that runs over UDP. Including the Interframe gap,calculate the maximum data utilisation of SLTP/UDP/IPv6 packets over a 100 MbpsEthernet network.c) In order to make the setup in part b) totally secure, it has been decided to have twoadditional IPv6 headers. The first header is an Encryption header to allow the packet tobe encrypted. The second header is an IPv6 tunnelling header allowing a VPN to be setup. Calculate by how much this new arrangement decreases the maximum utilisation andcomment on your results.