Section 1.

1. What are the advantages and disadvantages of following guided medium types used in networking
I. Coaxial cables
II. Shielded Twisted Pair
III. Un shielded Twisted Pair
IV. Fibre Optics

2. Describe the difference between Single mode and Multi-mode fibre optics.

3. Describe following networking topologies using suitable diagrams.
a. Bus
b. Mesh
c. Star
d. Ring

4. Describe following transmission modes using suitable diagrams and examples.
a. Simplex
b. Half Duplex
c. Full Duplex

5. Describe CSMA CD and CSMA CA.

6. Describe followings
a. Standards used in data Communication
b. ISO OSI model
c. Physical Layer
d. Datalink Layer
e. Network Layer
f. Transport Layer
g. Session Layer
h. Presentation Layer
i. Application Layer
j. TCP/IP Model

7. Describe Following
i. TCP
ii. UDP

8. What is the difference between:
a) Router and Switch
b). Layer 2 and Layer 3 Switch
c). Interior Gateway Protocol and Exterior Gateway Protocol

9. Describe following Routing and Switching Protocols

a). Spanning Tree Protocol
b). Link State Routing
c). Distance Vector Routing

10. How a Telco operator is different than an ISP?

Section 2. Multiple Choice Questions.

Please circle the right answer. There is no negative marking. Every question carry 1 Mark.
1. Which class does 172.16.1.20 belong to?

A. Class A
B. Class B
C. Class C
D. None of the Above

2. Which class does 192.168.1.10 belong to?

A. Class A
B. Class B
C. Class C
D. None of the Above

3. Which class does 0.0.0.0 belong to?

A. Class A
B. Class B
C. Class C
D. Invalid IP Class

4. Which class does 190.0.0.0 belong to?
A. Class A
B. Class B
C. Class C
D. Class D

5. Which class does 111.11.11.0 belong to?

A. Class A
B. Class B
C. Class C
D. Invalid IP Class

6. Which class does 127.0.0.1 belong to?

A. Invalid IP Class
B. Class A
C. For loopback or localhost only
D. Class A and B

7. Which class does 223.200.200.1 belong to?

A. Class A
B. Class B
C. Class C
D. Class D

8. Which class does 224.225.100.1 belong to?

A. Class C
B. Class C and D
C. Class D
D. None

9. Which class does 111.111.111.1 belong to?

A. Class A
B. Class B
C. Class A and B
D. Invalid IP Address

10. Which class does 224.0.0.0 belong to?

A. Class A
B. Class B
C. Class C
D. Class D

11. There are ______ bits in an octet?

A. 8
B.5
C.4
D.9

12. Given the IP address 152.16.168.196/28, is the IP address 162.16.168.30 in the same network

A. Yes
B. No

13. What does /28 represent in the previous question?

A. The number of bits in the host portion of the IP address
B. The number of bits in the network portion of the IP address
C. The number of hosts in a network

14. Given the network mask id of 255.255.240.0, how many hosts are there?

A. 256
B. 4094
C. 100
D. 142

15. What is the net ID for the network in which 192.168.242.5/20 is located?

A. 192.168.241.1
B. 192.168.240.0
C. 192.168.242.2

16. IPv4 IP addresses are ___ bit binary numbers.

A. 2
B. 8
C. 32
D. 128

17. IPv6 IP addresses are ___ bit hexadecimal numbers.?

A. 2
B. 8
C. 32
D. 128

18. An IP address is divided into what two parts?

A. Physical and logical
B. Network and subnet
C. Network and host (or node)
D. Physical and emotional

19. The loopback IP address is ___?

A. 192.168.1.1
B. 127.0.0.1
C. 10.10.10.10
D. 255.255.255.255

Referring to the following IP address and subnet mask for questions 20 - 27
IP: 192.168.1.2
Subnet mask: 255.255.255.0

20. What class is the IP address?
A. A
B. B
C. C
D. D

21. What is the network portion of the IP address?

A. 192
B. 192.168
C. 192.168.1
D. 2

22. What is the host portion of the IP address?

A. 192
B. 192.168
C. 192.168.1
D. 2

23. How many hosts could the network support?
(Remember host IPs of all zeros or all ones are not allowed.)

A. 8
B. 254
C. 255
D. 256

24. The IP address written with CIDR format is ___?

A. 192.168.1.1/8
B. 192.168.1.1/24
C. 192.168.1.1/128
D. 192.168.1.1/255

25. What is the broadcast IP of the subnet?

A. 255.255.255.255
B. 192.168.1.0
C. 192.168.1.255
D. 192.168.1.256

26. The default subnet mask for the IP address is ___?

A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255

27. The network ID is ___?

A. 192.168.1.0
B. 192.168.1.1
C. 192.168.1.255
D. 192.168.1.256

28. The range of first octets in a class A IP address is ___.

A. 1 - 126
B. 1 - 128
C. 1 - 256
D. 10 - 128

29. The range of first octets in a class B IP address is ___.

A. 1 - 126
B. 126 - 190
C. 128 - 191
D. 128 - 223

30. The range of first octets in a class C IP address is ___.

A. 191 - 223
B. 192 - 223
C. 193 - 223
D. 193 - 256

31. Convert 0100 to decimal.

A. 2
B. 3
C. 4
D. 8

32. Convert 1000 0001 to decimal.

A. 9
B. 255
C. 129
D. 42

33. Convert 255 to binary.

A. 0001 1111 1111
B. 1111 1111
C. 0001 0000 0000
D. 1111

34. Convert 192 to binary.

A. 1100
B. 1100 0001
C. 1100 0000
D. 0000 0011

35. What protocol is used to automatically assign IP addresses to hosts?

A. WINS
B. NAT
C. DHCP
D. FTP

36. Which protocol is used to upload email messages to an email server?

A. DNS
B. HTTP
C. SMTP
D. PAT

37. Which protocol is used to resolve domain names to IP addresses?

A. TCP
B. DNS
C. DHCP
D. ARP

38. Which protocol is used to resolve IP to MAC addresses?

A. DNS
B. DHCP
C. ARP
D. WEP

39. Which protocol is used to provide secure connections across the Internet?

A. ARP
B. HTTPS
C. NTP
D. POP3

40. What does the acronym SSL represent?

A. System Service Layer
B. Secure Sockets Layer
C. System Synchronize Link
D. Secure System Link

41. Which is a common routing protocol used for local and wide area networks?

A. RIP
B. ARP
C. UDP
D. TCP

42. Which is a link layer protocol?

A. ARP
B. TCP
C. UDP
D. HTTP

43. Is IS-IS is routing protocol?

A. Yes
B. No

44.eGP (External gateway protocol) is most commonly used for?

A. External Links
B. Internal Links
C. Both Internal and External
D. None

45. Which one of the following is exterior gateway protocol?
A. RIP
B. BGP
C. IGRP
D. EIGRP

46. At which layer of OSI routing protocol work?

A. Transport
B. Network
C. Data link
D. Presentation

47. Which of the following does not describe the IP packet delivery layer?

A. Connectionless
B. Best Effort
C. Unreliable
D. Streaming

48. Which of the following default masks for the major class numbers is incorrect?

A. Class A mask 255.0.0.0 or /8
B. Class B mask 255.255.0.0 or /16
C. Class C mask 255.255.255.0 or /24
D. Class D mask 255.255.255.255 or /32

49. What does the ARP (Address Resolution Protocol) do?

A. Resolves IP addresses to MAC addresses
B. Resolves MAC addresses to IP addresses
C. Resolves the TYPE field to the MAC address
D. Resolves the MAC address to the TYPE field

50. What are the sublayers of the data link layer?

A. MAC and IPX
B. hardware and frame
C. MAC and LLC
D. WAN and LAN