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Networking and Data Communication Pre-Test (Worksheet Questions)

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Choose the best answer: Which layer of the OSI model is responsible for routing packets across different networks?

a)

Physical

b)

Data Link

c)

Network

d)

Transport

2.

Choose the best answer: What does MAC stand for in networking?

a)

Media Access Control

b)

Memory Access Control

c)

Message Authentication Code

d)

Main Area Connector

3.

Choose the best answer: Which device operates primarily at Layer 2 of the OSI model?

a)

Router

b)

Switch

c)

Hub

d)

Firewall

4.

Choose the best answer: In the TCP/IP model, which layer combines the functions of OSI Session, Presentation, and Application layers?

a)

Network Access

b)

Internet

c)

Transport

d)

Application

5.

Choose the best answer: Which protocol automatically assigns IP addresses to devices on a network?

a)

SNMP

b)

DNS

c)

DHCP

d)

FTP

6.

Choose the best answer: What is the default subnet mask for a Class C IP address?

a)

255.0.0.0

b)

255.255.0.0

c)

255.255.255.0

d)

255.255.255.255

7.

Choose the best answer: Which transmission medium offers the highest bandwidth and is immune to electromagnetic interference?

a)

Twisted-pair cable

b)

Coaxial cable

c)

Fiber-optic cable

d)

Wireless (radio waves)

8.

Choose the best answer: In which network topology are all devices connected to a central hub or switch?

a)

Bus

b)

Ring

c)

Star

d)

Mesh

9.

Choose the best answer: What does CSMA/CD stand for?

a)

Carrier Sense Multiple Access with Collision Detection

b)

Carrier Signal Multiple Access with Collision Domain

c)

Controlled Sense Media Access with Collision Detection

d)

Carrier Sense Media Access with Collision Division

10.

Choose the best answer: Which protocol provides reliable, connection-oriented communication?

a)

UDP

b)

TCP

c)

IP

d)

ICMP

11.

Choose the best answer: The IP address 192.168.1.10 belongs to which private address range?

a)

10.0.0.0 – 10.255.255.255

b)

172.16.0.0 – 172.31.255.255

c)

192.168.0.0 – 192.168.255.255

d)

169.254.0.0 – 169.254.255.255

12.

Choose the best answer: What is the main function of ARP (Address Resolution Protocol)?

a)

Resolve domain names to IP addresses

b)

Resolve IP addresses to MAC addresses

c)

Assign IP addresses dynamically

d)

Route packets between networks

13.

Choose the best answer: Which port number is used by HTTPS?

a)

21

b)

80

c)

443

d)

3389

14.

Choose the best answer: What type of IP address is 224.0.0.1?

a)

Unicast

b)

Multicast

c)

Broadcast

d)

Private

15.

Choose the best answer: How many layers are there in the OSI model?

a)

5

b)

6

c)

7

d)

8

16.

Choose the best answer: Which OSI layer performs error detection and correction using techniques like CRC?

a)

Network

b)

Data Link

c)

Transport

d)

Physical

17.

Choose the best answer: Which protocol is connectionless and used for streaming applications?

a)

UDP

b)

TCP

c)

FTP

d)

SMTP

18.

Choose the best answer: What is the purpose of a subnet mask?

a)

Encrypt network traffic

b)

Divide an IP address into network and host portions

c)

Assign MAC addresses

d)

Perform NAT

19.

Choose the best answer: Which device connects multiple networks and makes forwarding decisions based on IP addresses?

a)

Hub

b)

Switch

c)

Router

d)

Bridge

20.

Choose the best answer: In which topology does a single cable connect all devices, and a break can affect the entire network?

a)

Star

b)

Bus

c)

Ring

d)

Tree

21.

Choose the best answer: What does DNS stand for?

a)

Dynamic Network Service

b)

Domain Name System

c)

Data Network Security

d)

Distributed Name Service

22.

Choose the best answer: Which protocol is used to transfer web pages?

a)

FTP

b)

HTTP/HTTPS

c)

SMTP

d)

POP3

23.

Choose the best answer: The three-way handshake is used by which protocol?

a)

UDP

b)

TCP

c)

IP

d)

ARP

24.

Choose the best answer: What is the loopback IP address?

a)

192.168.0.1

b)

127.0.0.1

c)

255.255.255.255

d)

0.0.0.0

25.

Choose the best answer: Which class of IP address has the default subnet mask 255.0.0.0?

a)

Class B

b)

Class A

c)

Class C

d)

Class D

26.

Choose the best answer: What is the binary equivalent of subnet mask 255.255.255.0?

a)

/16

b)

/24

c)

/30

d)

/8

27.

Choose the best answer: Which layer is responsible for flow control and multiplexing?

a)

Network

b)

Transport

c)

Data Link

d)

Application

28.

Choose the best answer: What does NIC stand for?

a)

Network Interface Card

b)

Network Interface Controller (or Card)

c)

Node Internet Connector

d)

Network Internal Cable

29.

Choose the best answer: Which multiplexing technique is used in TDM?

a)

Frequency Division

b)

Time Division

c)

Wavelength Division

d)

Code Division

30.

Choose the best answer: What is the maximum number of hosts in a /27 subnet?

a)

30

b)

62

c)

126

d)

254

31.

Choose the best answer: Which protocol is used for email transmission?

a)

POP3

b)

IMAP

c)

SMTP

d)

HTTP

32.

Choose the best answer: What is the purpose of NAT?

a)

Resolve hostnames

b)

Allow multiple devices to share one public IP

c)

Encrypt data

d)

Assign MAC addresses

33.

Choose the best answer: In which layer does packet fragmentation occur?

a)

Data Link

b)

Network

c)

Transport

d)

Application

34.

Choose the best answer: Which cable type uses light to transmit data?

a)

UTP

b)

STP

c)

Fiber optic

d)

Coaxial

35.

Choose the best answer: What does VLAN stand for?

a)

Virtual Local Area Network

b)

Virtual LAN

c)

Variable Link Access Network

d)

Virtual Logical Area Node

36.

Choose the best answer: Which protocol is used to test reachability?

a)

FTP

b)

ICMP (Ping)

c)

SNMP

d)

DHCP

37.

Choose the best answer: What is the range of Class B IP addresses?

a)

1–126

b)

128–191

c)

192–223

d)

224–239

38.

Choose the best answer: Which layer handles encryption and compression?

a)

Session

b)

Presentation

c)

Application

d)

Transport

39.

Choose the best answer: What is a collision domain?

a)

Area where broadcasts propagate

b)

Area where collisions can occur

c)

Group of VLANs

d)

Subnet boundary

40.

Choose the best answer: Which device breaks up collision domains?

a)

Hub

b)

Switch (or bridge)

c)

Repeater

d)

Router

41.

Choose the best answer: What port does FTP use for control?

a)

20

b)

21

c)

23

d)

25

42.

Choose the best answer: Which is a link-state routing protocol?

a)

RIP

b)

OSPF

c)

EIGRP

d)

BGP (path vector)

43.

Choose the best answer: What does PDU stand for at the Transport layer?

a)

Packet

b)

Segment

c)

Frame

d)

Datagram

44.

Choose the best answer: Which is faster: UTP Cat5e or Cat6?

a)

Cat5e

b)

Cat6

c)

Both same

d)

Depends on length

45.

Choose the best answer: What is the broadcast address for 192.168.10.0/24?

a)

192.168.10.0

b)

192.168.10.255

c)

255.255.255.255

46.

Choose the best answer: Which protocol manages network devices?

a)

DNS

b)

SNMP

c)

DHCP

d)

ARP

47.

Choose the best answer: In IPv6, how many bits is an address?

a)

32

b)

128

c)

64

d)

256

48.

Choose the best answer: What is piggybacking used for in data link layer?

a)

Error correction

b)

Acknowledgment with data

c)

Flow control

d)

Encryption

49.

Choose the best answer: Which is not a guided medium?

a)

Twisted pair

b)

Coaxial

c)

Fiber

d)

Microwave

50.

Choose the best answer: What does FTP stand for?

a)

Fast Transfer Protocol

b)

File Transfer Protocol

c)

File Transmission Process

d)

Flexible Transfer Path

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