Princess Nora Bint Abdulrahman UniversityFaculty of Computer and Information SciencesDepartment of Networks and Telecommunications

NET431D-Advanced network servicesFirst Semester 1437/1438 HAssignment 2

Q1: Using your IP address 172.16.45.0 and the mask address 255.255.224.0, What is your network address? Broadcast address? First and Last host address? Number of addresses in this network? Number of host addresses?

Q2: Calculate the total number of addresses supported by class B IP address format. Note : 14 bits are used for network ID and 16 bits for host Id.

Q3: In contemporary routing and addressing, the notation commonly used is called classless interdomain routing or CIDR. With CIDR, the number of bits in the mask is indicated in the following fashion 192.168.100.0/24. This corresponds to a mask of 255.255.255.0. If this example would provide for 256 host addresses on the network how many addresses are provided with the following?

A. 192.168.100.0/23

B. 192.168.100.0/25

Q4: How do you correctly compress the following ipv6 address:

a. 2340:lABC:119A:A000:0000:0000:0000:0000

b. 0000:00AA:0000:0000:0000:0000: 119A:A231

c. 2340:0000:0000:0000:0000: 119A:A001:0000

d. 0000:0000:0000:2340:0000:0000:0000:0000

e. 2001:0db8:0000:0000:0000:0000:0000:0c50

Q5: Show the expand (unabbreviated) form of the following ipv6 addresses.a. 0::0b.0:AA::0c. 0:1234::3d. 123::1:2

Q6: What is the type of the following address? FE80::12?

Q7: Compare and contrast the fields in the main headers of IPv4 and IPv6. Make a tablethat shows the presence or absence of each field?

Q8: List three transition strategies to move from IPv4 to IPv6. Explain the differencebetween tunneling and dual stack strategies during the transition period. When iseach strategy used?

Q9: What are the two protocols defined by IPSec? Are both AH and ESP needed for IP security? Why or why not?

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Princess Nora Bint Abdulrahman UniversityFaculty of Computer and Information SciencesDepartment of Networks and Telecommunications

NET431D-Advanced network servicesFirst Semester 1437/1438 HAssignment 2

Q10: What is a VPN and why is it needed?

Q11: Draw a symmetric-key encryption/decryption between two devices to provide privacy?

Q12: Draw an asymmetric-key encryption/decryption between two devices to provide privacy?

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