Computer Knowledge

Computer Networks

2,614 Questions

Computer networks involve the architecture, protocols, and security measures used for digital communication. This collection covers OSI model layers, IP addressing, data transmission, and cryptographic standards. These concepts are vital for the computer knowledge sections of banking and government exams.

OSI model layersNetwork protocolsIP subnet maskingData encryption standardsServer configurationsNetwork commands

Computer Networks Questions

Multiple choice

Which of the following is a common network management tool used to monitor and troubleshoot network issues?

  1. Ping

  2. Traceroute

  3. Wireshark

  4. Network Performance Monitor
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wireshark is a network management tool that allows users to capture and analyze network traffic, helping to identify and troubleshoot network issues.

Multiple choice

What is the purpose of a DNS server in a network?

  1. To connect devices to a network

  2. To route data packets between networks

  3. To resolve domain names to IP addresses

  4. To provide internet access to devices
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A DNS server is responsible for resolving domain names (e.g., www.example.com) to their corresponding IP addresses, allowing devices to communicate with each other using domain names.

Multiple choice

Which of the following is a common network performance metric used to measure the speed of data transfer?

  1. Bandwidth

  2. Latency

  3. Jitter

  4. Packet loss
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bandwidth is a network performance metric that measures the maximum amount of data that can be transferred over a network connection in a given amount of time.

Multiple choice

Which of the following is a common type of DDoS attack used against critical infrastructure?

  1. SYN flood attack

  2. UDP flood attack

  3. ICMP flood attack

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SYN flood attacks, UDP flood attacks, and ICMP flood attacks are all common types of DDoS attacks used against critical infrastructure.

Multiple choice

What is packet sniffing?

  1. A technique used to capture data passing over a network.

  2. A technique used to intercept and modify data passing between two parties.

  3. A technique used to impersonate a legitimate user to access sensitive information.

  4. A technique used to disrupt the normal operation of a network or system.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Packet sniffing is a technique used in MitM attacks to capture data passing over a network. This is done using a packet sniffer, which is a software program that can capture and analyze network traffic.

Multiple choice

Which of the following is a common technique for optimizing the performance of network communication in software?

  1. Using appropriate network protocols

  2. Reducing the size of network payloads

  3. Batching network requests

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Optimizing the performance of network communication in software involves employing various techniques, such as using appropriate network protocols, reducing the size of network payloads, and batching network requests. These techniques help improve network efficiency and reduce communication overhead.

Multiple choice

Which network protocol is responsible for routing data packets between networks?

  1. TCP

  2. UDP

  3. IP

  4. HTTP
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

IP (Internet Protocol) is the primary network protocol responsible for routing data packets between networks. It defines the format of the data packets and the addressing scheme used to identify devices on the network.

Multiple choice

Which network protocol is used for transferring files between computers?

  1. TCP

  2. UDP

  3. FTP

  4. HTTP
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

FTP (File Transfer Protocol) is a network protocol used for transferring files between computers. It allows users to upload and download files from remote servers.

Multiple choice

Which network device is responsible for translating domain names into IP addresses?

  1. Modem

  2. Router

  3. Switch

  4. DNS Server
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A DNS (Domain Name System) server is responsible for translating domain names into IP addresses. This allows users to access websites by typing in a domain name instead of an IP address.

Multiple choice

Which network protocol is used for sending email messages?

  1. TCP

  2. UDP

  3. SMTP

  4. HTTP
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

SMTP (Simple Mail Transfer Protocol) is a network protocol used for sending email messages. It defines the format of email messages and the process for transferring them between email servers.

Multiple choice

Which network protocol is used for accessing websites?

  1. TCP

  2. UDP

  3. HTTP

  4. FTP
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

HTTP (Hypertext Transfer Protocol) is a network protocol used for accessing websites. It defines the format of web pages and the process for transferring them between web servers and web browsers.

Multiple choice

Which of the following is a common network monitoring tool?

  1. Ping

  2. Traceroute

  3. SNMP

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ping, Traceroute, and SNMP are all commonly used network monitoring tools that provide valuable information about network connectivity, performance, and device status.

Multiple choice

What is the recommended approach for managing network documentation?

  1. Using a centralized documentation system

  2. Storing documentation in multiple locations

  3. Relying on memory and tribal knowledge

  4. Ignoring documentation altogether
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using a centralized documentation system, such as a wiki or documentation repository, ensures that all network documentation is stored in a single, easily accessible location, making it easier to find and update information.

Multiple choice

Which communication protocol is primarily used by MindSphere to connect with industrial devices?

  1. MQTT

  2. OPC UA

  3. HTTP

  4. Bluetooth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

MindSphere primarily uses the MQTT (Message Queuing Telemetry Transport) protocol for communication with industrial devices. MQTT is a lightweight, publish-subscribe protocol designed for IoT applications.

Multiple choice

What is the purpose of the DNS protocol in mobile device connectivity?

  1. To translate domain names into IP addresses

  2. To establish a connection between two devices

  3. To ensure reliable data transmission

  4. To encrypt data
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The DNS (Domain Name System) protocol is responsible for translating domain names into IP addresses. This allows users to access websites and online services by using easy-to-remember domain names instead of complex IP addresses.