1 $Which of the following describes the geometric arrangement of devices on a network?$

A.

Protocol

B.

Topology

C.

Architecture

D.

Media

2 $In which topology is every node connected to a central node, such as a hub or a switch?$

A.

Bus

B.

Ring

C.

Star

D.

Mesh

3 $In a mesh topology with devices, what is the total number of physical links required?$

A.

B.

C.

D.

4 $Which network device operates primarily at the Physical Layer (Layer 1) of the OSI model?$

A.

Switch

B.

Router

C.

Hub

D.

Gateway

5 $What is the primary difference between a Switch and a Hub?$

A.

A Hub filters data based on MAC addresses, while a Switch broadcasts.

B.

A Switch filters data based on MAC addresses, while a Hub broadcasts to all ports.

C.

A Switch operates at Layer 3, while a Hub operates at Layer 2.

D.

There is no difference.

6 $Which device is used to connect two or more networks with different network addresses (subnets) and operates at the Network Layer?$

A.

Repeater

B.

Bridge

C.

Switch

D.

Router

7 $Which type of network covers a large geographical area, often crossing country or continent boundaries?$

A.

LAN

B.

MAN

C.

WAN

D.

PAN

8 $What does the acronym URL stand for?$

A.

Universal Resource Locator

B.

Uniform Resource Locator

C.

Uniform Resource Link

D.

Universal Reference Link

9 $Which protocol is primarily used for retrieving web pages from a web server?$

A.

SMTP

B.

FTP

C.

HTTP

D.

SNMP

10 $What system is responsible for translating human-readable domain names (like www.google.com) into IP addresses?$

A.

DHCP

B.

DNS

C.

ARP

D.

HTTP

11 $How many layers are there in the OSI Reference Model?$

A.

4

B.

5

C.

6

D.

7

12 $Which layer of the OSI model is responsible for end-to-end delivery, flow control, and error recovery?$

A.

Network Layer

B.

Transport Layer

C.

Session Layer

D.

Data Link Layer

13 $In the TCP/IP protocol suite, which protocol provides unreliable, connectionless delivery service?$

A.

TCP

B.

IP

C.

HTTP

D.

SMTP

14 $Which topology requires a terminator at both ends of the cable to prevent signal reflection?$

A.

Star

B.

Ring

C.

Bus

D.

Mesh

15 $What is the length of an IPv4 address?$

A.

32 bits

B.

48 bits

C.

64 bits

D.

128 bits

16 $Data units at the Data Link Layer are commonly referred to as:$

A.

Packets

B.

Segments

C.

Frames

D.

Bits

17 $Which layer of the OSI model is responsible for data encryption and decryption?$

A.

Application Layer

B.

Presentation Layer

C.

Session Layer

D.

Transport Layer

18 $Which of the following is NOT a valid transmission mode?$

A.

Simplex

B.

Half-Duplex

C.

Full-Duplex

D.

Multi-Duplex

19 $A Personal Area Network (PAN) is most likely to use which technology?$

A.

Fiber Optics

B.

Satellite

C.

Bluetooth

D.

Coaxial Cable

20 $Which layer of the TCP/IP model corresponds to the combined Session, Presentation, and Application layers of the OSI model?$

A.

Transport Layer

B.

Application Layer

C.

Internet Layer

D.

Network Access Layer

21 $In a client-server network architecture:$

A.

All computers have equal status.

B.

A powerful computer provides services to other computers.

C.

There is no central control.

D.

Security is difficult to manage.

22 $Which address is physically burnt into the Network Interface Card (NIC)?$

A.

IP Address

B.

Port Address

C.

MAC Address

D.

Domain Name

23 $What is the process of adding headers and trailers to data as it moves down the protocol stack called?$

A.

Decapsulation

B.

Encapsulation

C.

Segmentation

D.

Fragmenting

24 $Which device increases the strength of a signal to extend the maximum distance of a cable run?$

A.

Switch

B.

Router

C.

Repeater

D.

Gateway

25 $Which protocol is connection-oriented and guarantees delivery of data?$

A.

UDP

B.

IP

C.

TCP

D.

Ethernet

26 $The combination of an IP address and a Port number is often called a:$

A.

Subnet

B.

Socket Address

C.

MAC Address

D.

URL

27 $In the OSI model, which layer deals with logical addressing (IP addressing) and path determination?$

A.

Data Link

B.

Network

C.

Transport

D.

Physical

28 $Which topology is most reliable because a break in one link does not affect the connection between other devices?$

A.

Bus

B.

Ring

C.

Mesh

D.

Linear

29 $Which standard defines the format of a Web page?$

A.

HTTP

B.

HTML

C.

DNS

D.

URL

30 $What is a 'Packet' in the context of computer networks?$

A.

A hardware component.

B.

A unit of data transmitted over a network.

C.

A type of network topology.

D.

A software used to browse the internet.

31 $Which of the following is NOT a layer in the TCP/IP protocol suite?$

A.

Internet

B.

Transport

C.

Session

D.

Application

32 $What is the primary function of the Physical Layer?$

A.

Routing packets

B.

Transmission of raw bits over a communication channel

C.

Error detection

D.

Session management

33 $Which command-line tool is commonly used to test the reachability of a host on an IP network?$

A.

ftp

B.

ping

C.

telnet

D.

netstat

34 $What does ARP stand for?$

A.

Address Resolution Protocol

B.

Advanced Routing Protocol

C.

Automatic Request Packet

D.

Address Routing Packet

35 $A network that connects computers within a single building or campus is known as a:$

A.

WAN

B.

MAN

C.

LAN

D.

SAN

36 $In which transmission mode can data be sent and received simultaneously?$

A.

Simplex

B.

Half-Duplex

C.

Full-Duplex

D.

Reverse-Duplex

37 $Which device divides a network into different collision domains?$

A.

Hub

B.

Repeater

C.

Switch

D.

Cable

38 $Which of the following identifies a specific process or application on a computer?$

A.

IP Address

B.

Port Number

C.

MAC Address

D.

Subnet Mask

39 $The 'http' in ' http://www.example.com' represents the:$

A.

Domain Name

B.

Path

C.

Protocol

D.

Server Name

40 $Which layer ensures that the data received is exactly what was sent (error-free) typically using checksums?$

A.

Physical

B.

Data Link

C.

Session

D.

Presentation

41 $A collection of interconnected networks is called an:$

A.

Intranet

B.

Internetwork

C.

Extranet

D.

Ethernet

42 $Which protocol is used to assign dynamic IP addresses to devices on a network?$

A.

DNS

B.

DHCP

C.

ARP

D.

ICMP

43 $In the Ring topology, how is data access typically controlled?$

A.

CSMA/CD

B.

Token Passing

C.

Polling

D.

Random Access

44 $Which of the following is an example of a Web Browser?$

A.

Apache

B.

Google Chrome

C.

Nginx

D.

Linux

45 $If a link fails in a Ring topology, what happens to the network (assuming single ring)?$

A.

Only that link is affected.

B.

The entire network fails.

C.

Data is rerouted instantly.

D.

Performance improves.

46 $The Internet is best described as:$

A.

A private network for a corporation.

B.

A global network of networks.

C.

A single supercomputer.

D.

A software application.

47 $What is the standard port number for HTTPS traffic?$

A.

80

B.

21

C.

443

D.

25

48 $Which OSI layer is responsible for dialog control and synchronization?$

A.

Transport

B.

Session

C.

Application

D.

Network

49 $A MAC address is usually represented in which numerical system?$

A.

Binary

B.

Decimal

C.

Hexadecimal

D.

Octal

50 $Which device connects a LAN to a WAN (typically the Internet)?$

A.

Switch

B.

Hub

C.

Router

D.

Repeater

Unit 1 - Practice Quiz