Q.2 Discuss IP sec protocols in detail.
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- In what kinds of situations may using SSH prove to be helpful? The decision to include SSHs on the list of protocols has been the subject of much discussion.Which two of the following are the most compelling arguments for employing layered protocols? If you make a claim, you should provide evidence to support it.4) _________ is organized as three protocols that typically run on top of TCP for secure network communications and are designed to be relatively simple and inexpensive to implement. A) SSL B) SSH C) IPsec D) EAP
- Provide an overview of the four abstraction layers that make up TCP/IP. ii) Speculate on a scenario where two computers are transferring a video file via an unencrypted ftp connection using a weak TCP three-way handshake.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.Which two of the following are the most convincing arguments in favour of the use of layered protocols?
- Consider a IP address 201.24.58.69 in classful address, if the number of 1's in directed broadcast address is a and number of 1's in network ID, of the given IP address is b, value of a + b.ii)Detail the four abstraction layers that make up TCP/IP. ii) Provide a scenario in which two computers share a video file via an unencrypted ftp connection using a weak TCP three-way handshake.QUESTION 54 Network layer provides two basic functionalities (_______), and(_______) QUESTION 55 Network layer consists of two planes:(_________) , and(_______). QUESTION 56 What is AIMD in TCP stands for? What is the main purpose of it? QUESTION 57 Link layer uses IP for source and destination addresses True False QUESTION 58 SHA-1 is a Cryptographic hash function True False QUESTION 59 CRC is a cryptographic hash function True False
- Firstly, it is worth considering the rationale behind the utilization of TCP rather than UDP by protocols such as HTTP, FTP, SMTP, and POP3.Which two of the following are the most compelling reasons in favor of using layered protocols?QUESTION 6 BGP is used to compute the shortest path in an Autonomous System (AS) True False 5 points QUESTION 7 Applications directly interacts with services provided from network layer. True False 5 points QUESTION 8 TCP provides a guarantee on the timing. True False 5 points QUESTION 9 UDP communications are secure by default. True False 5 points QUESTION 10 Http protocol is an example of stateful protocols True False