STUDENT NUMBER: _______________________ COURSE: _______________________ _____________________________________________________________________ SPRING SEMESTER, 2008
SUBJECT NAME SUBJECT NO. DAY/DATE
: Networking Essentials : 31270 : Friday 30th May, 2008
TIME ALLOWED : 2 hours START/END TIME : various between 9.00am and 9.00pm NOTES/INSTRUCTIONS TO CANDIDATES: This examination paper consists of 7 pages excluding the cover page. Question 1 is a compulsory question and has a value of 25 points. Answer 3 questions of the 4 remaining questions. Each of the remaining questions has equal value (20 points). The total of 85 points will be scaled to a final mark out of 30. All answers to the questions must be written in the provided answer book. This is a closed-book exam. No materials are allowed in the exam.
Question 1 – Subnetting and VLSM (25 Points) 1. Given the Host Address 18.104.22.168 and the Broadcast Address 22.214.171.124, find the Network Address. How many usable host addresses are available in this subnet? (4 Points) 2. You have been given the Network Address 126.96.36.199/23. If you have to make provision for at least 60 hosts per subnet, write the Subnet Mask and addresses of the first two useable subnets. What is the Broadcast Address of these two subnets? (5 Points) 3. Given the following diagram and the IP Address 188.8.131.52/23, answer the questions below. A. How many bits are required for each subnet? (3.5 Points) Subnet Name HAPPY EAST HAPPY WEST GRUMPY NORTH GRUMPY SOUTH DOC CENTRAL HAPPY-DOC WAN GRUMPY-DOC WAN Number of Bits
B. Complete the Table with the Network Address and the Subnet Mask using ‘/’ notation. (7 Points) Network HAPPY EAST HAPPY WEST GRUMPY NORTH GRUMPY SOUTH DOC CENTRAL HAPPY-DOC WAN GRUMPY-DOC WAN Network Address Mask using /