CS457 Homework: Networking Problems and Subnetting - Prof. Tarek Abdelzaher, Assignments of Computer Systems Networking and Telecommunications

Solutions to various problems in cs457, including distance calculation between nodes in a network, identifying interfaces, and subnetting. Students can use this document as a reference for understanding networking concepts and solving similar problems.

Typology: Assignments

Pre 2010

Uploaded on 03/09/2009

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Homework 5 CS457:
Problem 15 (1.5 points):
a).
Information
stored at node
Distance to reach node
A B C D E F
A 0 โˆž 3 8 โˆž โˆž
B โˆž 0 โˆž โˆž 2 โˆž
C 3 โˆž 0 โˆž 1 6
D 8 โˆž โˆž 0 2 โˆž
E โˆž 2 1 2 0 โˆž
F โˆž โˆž 6 โˆž โˆž 0
b).
Information
stored at node
Distance to reach node
A B C D E F
A 0 โˆž 3 8 4 9
B โˆž 0 3 4 2 โˆž
C 3 3 0 3 1 6
D 8 4 3 0 2 โˆž
E 4 2 1 2 0 7
F 9 โˆž 6 โˆž 7 0
c).
Information
stored at node
Distance to reach node
A B C D E F
A 0 6 3 8 4 9
B 6 0 3 4 2 9
C 3 3 0 3 1 6
D 8 4 3 0 2 9
E 4 2 1 2 0 7
F 9 9 6 9 7 0
Problem 21(2.5 points):
a) Interface 0
b) R2
c) R4
d) R3
e) R4
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Homework 5 CS457: Problem 15 (1.5 points): a). Information stored at node Distance to reach node A B C D E F A 0 โˆž 3 8 โˆž โˆž B โˆž 0 โˆž โˆž 2 โˆž C 3 โˆž 0 โˆž 1 6 D 8 โˆž โˆž 0 2 โˆž E โˆž 2 1 2 0 โˆž F โˆž โˆž 6 โˆž โˆž 0 b). Information stored at node Distance to reach node A B C D E F A 0 โˆž 3 8 4 9 B โˆž 0 3 4 2 โˆž C 3 3 0 3 1 6 D 8 4 3 0 2 โˆž E 4 2 1 2 0 7 F 9 โˆž 6 โˆž 7 0 c). Information stored at node Distance to reach node A B C D E F A 0 6 3 8 4 9 B 6 0 3 4 2 9 C 3 3 0 3 1 6 D 8 4 3 0 2 9 E 4 2 1 2 0 7 F 9 9 6 9 7 0 Problem 21(2.5 points): a) Interface 0 b) R c) R d) R e) R

Problem 40 (3 points): a). Subnet Number Subnet Mask 200.1.1.128 255.255.255. 200.1.1.64 255.255.255. 200.1.1.32 255.255.255. 200.1.1.0 255.255.255. Note: this is only one possible arrangement. b). If D grows to 34 hosts, D will need 6 bits host field. There are many possible solutions! For example, the organization can subdivide department A into two subnets. Give D 6 bits for host field. A1:00 + 6 bits A2:111+ 5 bits B: 110 + 5 bits C: 01+6 bits D: 10+6 bits Problem 45(3 points): a. B b. A c. E d. F e. C f. D