Networking Basics - Practice MCQs for CCAT

Correct Answer: B - Local Area Network

LAN stands for Local Area Network, covering a small geographical area like an office.

Correct Answer: B - WAN

WAN (Wide Area Network) covers the largest geographical area, like countries or continents.

Correct Answer: C - Internet Protocol

IP stands for Internet Protocol, which provides addressing and routing on networks.

Correct Answer: B - HTTP

HTTP (HyperText Transfer Protocol) is used for accessing websites.

Correct Answer: C - Sending emails

SMTP (Simple Mail Transfer Protocol) is used for sending emails.

Correct Answer: A - Connect networks

A router connects different networks and routes data between them.

Correct Answer: C - Switch

A switch connects multiple computers within a LAN and forwards data based on MAC addresses.

Correct Answer: B - Uniform Resource Locator

URL stands for Uniform Resource Locator, the address of a web resource.

Correct Answer: C - Domain name to IP address

DNS (Domain Name System) converts domain names to IP addresses.

Correct Answer: D - Star

Star topology has all nodes connected to a central hub or switch.

Correct Answer: C - File transfer

FTP (File Transfer Protocol) is used for transferring files between computers.

Correct Answer: A - Connect to internet via telephone line

A modem modulates and demodulates signals for internet connectivity via telephone lines.

Correct Answer: D - Receiving emails

POP3 (Post Office Protocol version 3) is used for receiving emails from a mail server.

Correct Answer: D - Data transfer capacity

Bandwidth is the maximum data transfer capacity of a network connection.

Correct Answer: B - Remote login

Telnet is a protocol used for remote login to access another computer.

Correct Answer: B - Repeater

A repeater amplifies weak signals to extend the range of a network.

Correct Answer: D - Internet Service Provider

ISP stands for Internet Service Provider, a company providing internet access.

Correct Answer: C - Bus

Bus topology uses a single backbone cable to which all devices are connected.

Correct Answer: C - Network Interface Card

NIC stands for Network Interface Card, hardware that connects a computer to a network.

Correct Answer: A - 80

HTTP uses port 80 by default for web traffic.

Correct Answer: D - 7

The OSI (Open Systems Interconnection) model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

Correct Answer: D - Network Layer

The Network Layer (Layer 3) handles routing, forwarding, and addressing of data packets across networks.

Correct Answer: D - Transmission Control Protocol

TCP stands for Transmission Control Protocol, providing reliable, ordered data delivery.

Correct Answer: A - Bus

In a bus topology, all devices are connected to a single central cable (backbone) through drop lines.

Correct Answer: C - Switch

A switch operates at the Data Link Layer (Layer 2) and uses MAC addresses to forward frames.

Correct Answer: B - 254

A Class C network uses 8 bits for host addresses, allowing 2⁸ - 2 = 254 usable host addresses.

Correct Answer: D - SMTP

SMTP (Simple Mail Transfer Protocol) is used for sending and relaying email messages.

Correct Answer: D - Presentation Layer

The Presentation Layer (Layer 6) handles data formatting, encryption, and compression.

Correct Answer: B - Internet Protocol

IP stands for Internet Protocol, responsible for addressing and routing packets across networks.

Correct Answer: C - Mesh

In a full mesh topology, every device is connected to every other device with dedicated links.

Correct Answer: B - 80

HTTP (HyperText Transfer Protocol) uses port 80 as its default port number.

Correct Answer: A - UDP

UDP (User Datagram Protocol) is connectionless and provides no guarantee of delivery, ordering, or duplicate protection.

Correct Answer: B - Domain name to IP address

DNS (Domain Name System) translates human-readable domain names into numerical IP addresses.

Correct Answer: C - 1.0.0.0 to 126.255.255.255

Class A IP addresses range from 1.0.0.0 to 126.255.255.255, with the first octet identifying the network.

Correct Answer: C - Repeater

A repeater regenerates and amplifies network signals to extend the physical range of a network segment.

Correct Answer: A - A physical address burned into a network interface card

A MAC (Media Access Control) address is a unique physical address assigned to a network interface card by the manufacturer.

Correct Answer: D - FTP

FTP (File Transfer Protocol) is used specifically for transferring files between a client and server.

Correct Answer: A - Automatically assigns IP addresses to devices

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and network configuration to devices.

Correct Answer: D - Session Layer

The Session Layer (Layer 5) manages sessions between communicating applications.

Correct Answer: B - The entire network goes down

In a star topology, all communication passes through the central hub, so its failure disconnects the entire network.

Correct Answer: B - 255.255.0.0

A default Class B network uses the subnet mask 255.255.0.0, with 16 bits for network and 16 bits for host.

Correct Answer: A - HTTPS

HTTPS (HTTP Secure) uses TLS/SSL encryption for secure communication between browser and server.

Correct Answer: A - 127.0.0.1

127.0.0.1 is the loopback address used to test network software on the local machine without sending traffic over the network.

Correct Answer: A - Router

A router connects different networks and determines the best path for forwarding packets between them.

Correct Answer: A - 4

The TCP/IP model has 4 layers: Network Access, Internet, Transport, and Application.

Correct Answer: A - 172.16.0.0 to 172.31.255.255

172.16.0.0 to 172.31.255.255 is one of three private IP address ranges defined in RFC 1918.

Correct Answer: C - IP address to MAC address

ARP (Address Resolution Protocol) resolves a known IP address to the corresponding MAC address on a local network.

Correct Answer: A - WAN

A WAN (Wide Area Network) covers a large geographical area, potentially spanning countries or continents.

Correct Answer: D - End-to-end communication and error recovery

The Transport Layer (Layer 4) ensures reliable end-to-end communication, flow control, and error recovery.

Correct Answer: B - POP3

POP3 (Post Office Protocol version 3) is used to retrieve emails from a mail server to a local client.