Firewalls are used to protect a computer on a network against:
Unauthorized attacks
Firewalls are designed to protect computers and networks from unauthorized attacks. They act as a barrier between a secure internal network and untrusted external networks such as the Internet, by monitoring and controlling incoming and outgoing network traffic based on predetermined security rules.
Let's analyze each option in detail:
- Internal attacks: While firewalls can block certain types of data traffic from internal sources, their primary function is not to prevent internal security breaches. Internal security is generally handled by other methods such as user authentication and access controls.
- Unauthorized attacks: This is the correct answer. Firewalls are mainly tasked with preventing unauthorized access or attacks from external sources. They do this by filtering data packets based on security protocols.
- Authorized attacks: This option is somewhat contradictory, as an attack cannot be authorized by definition. Firewalls would not prevent authorized data traffic considered legitimate.
- Fire attacks: This is not relevant to network security. Firewalls in computing are not related to physical fire prevention.
To conclude, firewalls are crucial for computer network security as they help in safeguarding against unauthorized intrusion and attacks by filtering and managing data traffic from and to the network.
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Which of the following statements are true ? 5G-enabled technology will soon replace 4G-enabled technology for mobile communication worldwide. Potential advantages of 5-G enabled mobile technology include:
A. Greater interconnectivity for Internet of things
B. Greater download speeds
C. Less bandwidth
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______ is a wireless technology built in electronic gadgets for transferring data over short distance.
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(b) The acronym ‘ISP’ stands for Internet Standard Provider
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Which of the following statement(s) is/are true in respect of Wireless Technology?
P: Bluetooth is a wireless technology which can be used to connect a headset to a mobile phone.
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At Which layer of OSI model of networking, HTTP works?
A set of rules used in communications in a network is called:
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Important Questions from Computer Networks
Which of the following technique(s) used in networking?
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Which among the following wireless standard is used in 4G network technology?
Arrange the following different types of computer networks in an ascending order on the basis of geographical area implied.
(A) MAN
(B) WAN
(C) LAN
Choose the correct answer from the options given below :
______ represents raw facts, whereas ______ is processed meaningful data.
