Computer Network
Total Questions: 20
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A ) Transfer Control Protocol
B ) Transmission Control Protocol ✅
C ) Technical Control Protocol
D ) Telecommunication Control Protocol
Explanation:
TCP (Transmission Control Protocol) is a fundamental protocol for reliable data transmission in computer networks.
A ) Domain Name System ✅
B ) Dynamic Network Service
C ) Data Networking Service
D ) Digital Naming System
Explanation:
DNS (Domain Name System) translates domain names into IP addresses, facilitating human-readable web addresses.
A ) Router
B ) Switch ✅
C ) Hub
D ) Bridge
Explanation:
A switch operates at the Data Link Layer and uses MAC addresses to forward data within a local network.
A ) Address Routing Protocol
B ) Automated Recovery Protocol
C ) Advanced Routing Protocol
D ) Address Resolution Protocol ✅
Explanation:
ARP is used to map IP addresses to MAC addresses in a local network.
A ) HTTP
B ) SMTP ✅
C ) FTP
D ) ICMP
Explanation:
SMTP (Simple Mail Transfer Protocol) is used for sending emails.
A ) Directs Host Communication Protocol
B ) Determines Host Communication Paths
C ) Provides dynamic host configuration ✅
D ) Dynamic Host Control Protocol
Explanation:
DHCP dynamically assigns IP addresses to devices in a network.
A ) Wireless Area Network
B ) Wide Area Network ✅
C ) Wired Access Network
D ) Web Area Network
Explanation:
WAN (Wide Area Network) covers a broad geographical area and connects multiple LANs.
A ) Virtual Private Network ✅
B ) Very Private Network
C ) Virtual Public Network
D ) Visual Private Network
Explanation:
VPN provides a secure connection over the internet, often used for remote access.
A ) Application
B ) Session
C ) Presentation ✅
D ) Transport
Explanation:
The Presentation Layer handles data translation and encryption/decryption.
A ) Identifying devices on the internet
B ) Identifying devices on a local network ✅
C ) Assigning IP addresses
D ) Establishing VPN connections
Explanation:
MAC addresses uniquely identify devices on a local network.
A ) HTTP
B ) FTP
C ) ICMP
D ) HTTPS ✅
Explanation:
HTTPS (Hypertext Transfer Protocol Secure) encrypts data for secure web
A ) Internet Control Message Protocol ✅
B ) Internet Communication Management Protocol
C ) Integrated Control Message Protocol
D ) Intranet Control Management Protocol
Explanation:
ICMP is used for error reporting and diagnostics in IP networks.
A ) Speeding up network
B ) Filtering and controlling traffic ✅
C ) Assigning IP
D ) Ensuring network security
Explanation:
➡️ A security system that monitors and controls incoming and outgoing network traffic.
✅ Firewall refers to a system that protects a computer or network from unauthorized access.
🔒 Explanation for Exams:
A firewall is:
- ✅ A network security system (hardware or software).
- ✅ It blocks unauthorized access to or from a private network.
- ✅ Works by filtering data packets based on security rules.
A ) Connects devices within a local network
B ) Forwards data between different networks ✅
C ) Assigns IP addresses dynamically
D ) Filters network traffic
Explanation:
Routers forward data between different networks, facilitating inter-network communication.
A ) FTP ✅
B ) SMTP
C ) HTTP
D ) DHCP
Explanation:
FTP (File Transfer Protocol) is used for transferring files between devices on a network.
A ) Information Processing
B ) Internal Protocol
C ) Integrated Protocol
D ) Internet Protocol ✅
Explanation:
IP (Internet Protocol) is the primary protocol for communication over the internet.
A ) Assigning IP addresses
B ) Define network boundaries ✅
C ) Establishing VPN connections
D ) Filtering network traffic
Explanation:
A subnet mask helps identify the network portion of an IP address.
A ) ICMP
B ) OSPF ✅
C ) ARP
D ) DHCP
Explanation:
OSPF (Open Shortest Path First) is a dynamic routing protocol.
A ) Network Address Translation ✅
B ) National Access Terminal
C ) Network Authentication Tool
D ) Network Analyzer Tool
Explanation:
NAT allows multiple devices to share a single public IP address.
A ) Accelerating speed
B ) Filtering and forwarding network traffic
C ) Enhancing network security
D ) All of the above ✅
Explanation:
A proxy server can serve various purposes, including accelerating internet speed, filtering traffic, and enhancing security.