Previous Year Networking and Cyber Security MCQ for SSC CGL CHSL CPO MTS and Bank Exam
01. ____ is a passage to connect two networks that may work on different networking models.
- Router
- Switch
- Gateway
- Hub
Explanation: – A gateway is a device that connects two networks that may work on different networking models. It translates between the different protocols used by the two networks, so that data can be exchanged between them.
A router is a device that connects two networks that use the same networking model. It forwards data packets between the two networks, based on the destination address of the packets.
A switch is a device that connects multiple devices on the same network. It forwards data packets between the devices, based on the MAC address of the devices.
A hub is a device that connects multiple devices on the same network. It simply repeats all data packets that it receives to all of the devices connected to it.
Networking and Cyber Security MCQ for SSC CGL
02. A ____ is a networking device that filters network traffic while connecting multiple computers or communicating devices.
- Router
- Gateway
- Switch
- Repeater
Explanation: – A switch is a networking device that filters network traffic while connecting multiple computers or communicating devices. It is a layer 2 device in the OSI model, which means that it operates at the data link layer. Switches learn the MAC addresses of the devices connected to them and use this information to forward traffic to the correct destination.
Routers are used to connect different networks together. They are layer 3 devices in the OSI model, which means that they operate at the network layer. Routers use IP addresses to forward traffic to the correct destination.
Gateways are used to connect different networks that use different protocols. For example, a gateway can be used to connect a network that uses IPv4 to a network that uses IPv6.
Repeaters are used to extend the range of a network by amplifying the signal. They are layer 1 devices in the OSI model, which means that they operate at the physical layer. Repeaters do not filter network traffic.
Networking and Cyber Security MCQ for SSC CGL
03. A ____ is a networking device that filters network traffic while connecting multiple computers or communicating devices.
- Repeater
- Distributor
- Switch
- Router
Explanation: – A switch is a networking device that filters network traffic while connecting multiple computers or communicating devices. It is a layer 2 device in the OSI model, which means that it operates at the data link layer. Switches learn the MAC addresses of the devices connected to them and use this information to forward traffic to the correct destination.
Repeaters are used to extend the range of a network by amplifying the signal. They are layer 1 devices in the OSI model, which means that they operate at the physical layer.
Distributors are used to connect multiple segments of a network. They are layer 1 devices in the OSI model, which means that they operate at the physical layer.
Routers are used to connect different networks together. They are layer 3 devices in the OSI model, which means that they operate at the network layer.
Networking and Cyber Security MCQ for SSC CGL
04. ____ is also known as protocol converter.
- Hub
- Bridge
- Switch
- Gateway
Explanation: – A gateway is a device that connects two networks that may work on different networking models. It translates between the different protocols used by the two networks, so that data can be exchanged between them. This makes it a protocol converter.
Hubs, bridges, and switches are all devices that connect multiple devices on the same network. They do not translate between different protocols, so they are not protocol converters.
Networking and Cyber Security MCQ for SSC CGL
05. ____ are rules that exist at several levels in a telecommunication connection.
- Bandwidth
- Network Surface Unit
- Protocol
- Domain Name
Explanation: – Protocols are rules that exist at several levels in a telecommunication connection. They define how data is formatted, transmitted, and received. Protocols are essential for ensuring that data is exchanged correctly between different devices.
Bandwidth is the amount of data that can be transmitted over a network in a given amount of time. Network Surface Unit (NSU) is a unit of measurement used to describe the capacity of a network. Domain Name is a unique identifier that is used to locate a website on the Internet.
Networking and Cyber Security MCQ for SSC CGL
06. ____server acts as a set of components accessible to the software developer through an API defined by the platform itself.
- Application
- File Transfer Protocol (FTP)
- Database
Explanation: – An application server is a set of components accessible to the software developer through an API defined by the platform itself. It provides the runtime environment for executing applications and provides services such as security, data access, and transactions.
Mail servers are used to send and receive email. FTP servers are used to transfer files over a network. Database servers are used to store and manage data.
Networking and Cyber Security MCQ for SSC CGL
07. Which of the following Internet protocol specifies how data is exchanged over the Internet and how it should be broken into IP packets?
- PPP
- HTTP
- TCP
- SMTP
Explanation: – TCP (Transmission Control Protocol) is a transport layer protocol that specifies how data is exchanged over the Internet and how it should be broken into IP packets. TCP ensures that data is delivered reliably and in the correct order.
PPP (Point-to-Point Protocol) is a data link layer protocol that is used to establish a direct connection between two devices. HTTP (Hypertext Transfer Protocol) is a application layer protocol that is used to transfer hypertext documents over the Internet. SMTP (Simple Mail Transfer Protocol) is an application layer protocol that is used to send email messages over the Internet.
Networking and Cyber Security MCQ for SSC CGL
08. ____ is the bit-rate of available or consumed information capacity expressed typically in metric multiples of bits per second.
- Frequency
- Protocol
- Speed
- Bandwidth
Explanation: – Bandwidth is the bit-rate of available or consumed information capacity expressed typically in metric multiples of bits per second. It is a measure of how much data can be transferred between two points in a network in a given amount of time.
Frequency is the number of times a signal repeats itself in a second. It is measured in hertz (Hz), where 1 Hz is equal to one cycle per second.
Speed is a measure of how fast something is moving. It is typically measured in meters per second (m/s) or kilometers per hour (km/h).
Protocol is a set of rules that govern how devices communicate with each other. There are many different protocols, such as TCP/IP, HTTP, and FTP.
Networking and Cyber Security MCQ for SSC CGL
09. ____ cookies track you and expose your privacy.
- Persistent
- Third-Party
- Zombi
- Session
Explanation: – Third-party cookies are cookies that are set by websites other than the one you are currently visiting. They are often used by advertisers to track your browsing activity across multiple websites. This can be used to build a profile of your interests and show you targeted ads.
Persistent cookies are cookies that stay on your computer even after you close your browser. They can be used to track your browsing activity over time.
Session cookies are cookies that are deleted when you close your browser. They are used to track your browsing activity within a single session.
Zombi cookies are cookies that are still active even after you have deleted them. They are often used by malware to track your browsing activity.
Networking and Cyber Security MCQ for SSC CGL
10. Some cookies are automatically recreated after a user has deleted them. These are called as ____ cookies.
- Third-party
- Zombie
- Persistent
- Session
Explanation: – Zombie cookies are cookies that are automatically recreated after a user has deleted them. They are often used by malware to track a user’s browsing activity.
Third-party cookies are cookies that are set by websites other than the one you are currently visiting. They are often used by advertisers to track your browsing activity across multiple websites.
Persistent cookies are cookies that stay on your computer even after you close your browser. They can be used to track your browsing activity over time.
Session cookies are cookies that are deleted when you close your browser. They are used to track your browsing activity within a single session.
Networking and Cyber Security MCQ for SSC CGL
11. Which among the following statements is incorrect?
- Trojan looks like a legitimate software.
- Some Trojans create backdoors to give malicious users access to the system.
- Trojan self-replicate and infects other files.
- Trojan spread through user interaction such as opening an email attachment or downloading and executing a file from the internet.
Explanation: – Trojans do not self-replicate and infect other files on their own. Unlike viruses, which are capable of self-replication, Trojans rely on social engineering tactics to deceive users into downloading and executing them. Once installed, Trojans can perform various malicious activities, such as creating backdoors, stealing sensitive data, or giving unauthorized access to the system to malicious users. However, they do not have the ability to self-replicate and spread to other files or systems independently.
Networking and Cyber Security MCQ for SSC CGL
12. ____ is a type of malware that is often disguised as legitimate software.
- Trozan
- Ransomware
- Roolkit
- Keylogger
Explanation: – Trojans are a type of malware that are often disguised as legitimate software or files to trick users into downloading and executing them. Once installed, they can carry out various malicious activities without the user’s knowledge, such as stealing data, creating backdoors, or giving unauthorized access to the system.
Networking and Cyber Security MCQ for SSC CGL
13. A ____ can either be malware or hardware. The main purpose of this malware is to record the keys pressed by a user on the keyboard.
- Keyloggers
- Roolkit
- Worm
- Trojan
Explanation: – Keyloggers are a type of malware or hardware that records the keys pressed by a user on the keyboard. They can be used to steal passwords, credit card numbers, and other sensitive information. Keyloggers can be installed on a computer through a variety of ways, such as clicking on a malicious link, downloading a file from an untrusted source, or installing a software package that contains a keylogger.
Keyloggers can be either software or hardware devices. Software keyloggers are installed on a computer and run in the background. Hardware keyloggers are physical devices that are connected to a computer’s keyboard.
Networking and Cyber Security MCQ for SSC CGL
14. ____ records everything you type on your PC in order to obtain your log-in name, passwords and other sensitive information.
- Virus
- Keyloggers
- Worms
- Ransomware
Explanation: – Keyloggers record everything you type on your PC in order to obtain your log-in name, passwords, and other sensitive information. They are a type of malware that can be installed on your computer without your knowledge. Once installed, a keylogger will record every keystroke you make, including your passwords, credit card numbers, and other personal information.
Viruses, worms, and ransomware are all types of malware, but they do not specifically record your keystrokes. Viruses are self-replicating programs that can damage your computer files. Worms are self-replicating programs that can spread from one computer to another. Ransomware is a type of malware that encrypts your files and demands a ransom payment in order to decrypt them.
Networking and Cyber Security MCQ for SSC CGL
15. ____ viruses are embedded in a system’s memory so it can be reactivated if the original virus is deleted.
- File
- Resident
- Polymorphic
- Roolkit
Explanation: – Resident viruses are embedded in a system’s memory so they can be reactivated if the original virus is deleted. They are often called memory-resident viruses.
File viruses infect executable files, such as .exe and .com files. They are not embedded in memory, so they must be executed in order to infect other files.
Polymorphic viruses change their code each time they infect a new file, making them difficult to detect and remove.
Roolkits are a type of malware that gives the attacker control of a victim’s computer. They are not technically viruses, but they can be used to install viruses on a victim’s computer.
Networking and Cyber Security MCQ for SSC CGL
16. A____ is a contagious program or code that attaches itself to another piece of software, and then reproduces itself when that software is run.
- Trojan
- Virus
- Adware
- Spyware
Explanation: – A virus is a contagious program or code that attaches itself to another piece of software, and then reproduces itself when that software is run. Viruses can spread from computer to computer through infected files, emails, or websites.
Trojans are malicious programs that disguise themselves as legitimate programs. When a Trojan is run, it can install other malware on the computer, steal data, or take control of the computer.
Adware is a type of malware that displays advertisements on a user’s computer. Adware can be installed on a computer through a variety of ways, such as clicking on a malicious link, downloading a file from an untrusted source, or installing a software package that contains adware.
Spyware is a type of malware that secretly collects information about a user’s computer activities. Spyware can be installed on a computer through a variety of ways, such as clicking on a malicious link, downloading a file from an untrusted source, or installing a software package that contains spyware.
Networking and Cyber Security MCQ for SSC CGL
17. Crypto Locker is a form of which of the following?
- Ransomware
- Adware
- Spyware
- Worms
Explanation: – Ransomware is a type of malware that encrypts a victim’s files and demands a ransom payment in order to decrypt them. Crypto Locker is a particularly virulent form of ransomware that encrypts files using the RSA-2048 encryption algorithm. This makes it very difficult to decrypt the files without the decryption key, which is typically held by the ransomware’s creators.
Adware is a type of software that displays advertisements on a user’s computer. Spyware is a type of software that secretly collects information about a user’s computer activities. Worms are a type of malware that can self-replicate and spread from one computer to another.
Networking and Cyber Security MCQ for SSC CGL
18. Once ____ has infected a substantial number of computer systems, it generates revenue either by displaying advertisement or using “pay per click” mechanism to charge its client against the number of clicks on their displaying ads.
- Worms
- Virus
- Spyware
- Adware
Explanation: – Adware is a type of malware that displays advertisements on a user’s computer. It can be installed on a computer through a variety of ways, such as clicking on a malicious link, downloading a file from an untrusted source, or installing a software package that contains adware.
Once adware has infected a computer, it can generate revenue for its creators by displaying advertisements on the user’s computer. The advertisements can be displayed in a variety of ways, such as as pop-up windows, banners, or in-text ads.
Adware can also use a “pay per click” mechanism to charge its creators for the number of times users click on their displayed ads. This means that the creators of adware can earn money even if users do not click on the ads, as long as the ads are displayed.