Which of the following is true about a firewall?

Which of the following statements about firewall (in the context of computing) is INCORRECT?

It is unable to permit legitimate communication to pass.
It is frequently used to protect a computer network from unauthorized access.
It permits network transmission based on a set of rules.
It is a combination of both, software and hardware devices.

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Which of the following statements about firewall (in the context of computing) is INCORRECT?
Answer (Detailed Solution Below)
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Which of the following is a firewall?
Which of the following statements correctly defines a firewall?
Which one is not true about a firewall?
What is the main function of a firewall?

Answer (Detailed Solution Below)

Option 1 : It is unable to permit legitimate communication to pass.

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The correct answer is It is unable to permit legitimate communication to pass.

A firewall is a network security device/software that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules. Its purpose is to establish a barrier between your internal network and incoming traffic from external sources (such as the internet) in order to block malicious traffic like viruses and hackers.
A legitimate or genuine content can always pass through the firewall depending on the permission set by the firewall.
Firewalls filter traffic coming from unsecured or suspicious sources to prevent attacks and carefully analyze incoming traffic based on pre-established rules.
Firewalls guard traffic at a computer’s entry point called ports, which is where information is exchanged with external devices.
Firewalls can either be software or hardware, though it’s best to have both.
A software firewall is a program installed on each computer and regulates traffic through port numbers and applications, and pre-defined rules, while a physical firewall is a piece of equipment installed between your network and gateway.

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A. Follows a set of rules

B. Can be either a hardware or software device

C. Filters network traffic

D. All the above

Question added by Emad Mohammed said abdalla , ERP & IT Software, operation general manager . , AL DOHA Company
Date Posted: 2015/08/26

8 Answers

by Hameed Abdul , Head – IT, Procurement & Infrastructure , Omega Computronix
7 years ago

Firewall is specifically used to filter the network traffice

D. All the above......................................................

D is the corect option for this

Thank you experts.................................

(D) is the right answer. Thanks.

D. All of the above, ..............

>>>>>>>>>>>>>>>> D. All the above

Which of the following is a firewall?

Explanation: There are four types of firewall based on their working and characteristics. These are Packet Filtering Firewalls, Circuit Level Gateway Firewalls, Application level Gateway Firewalls, and Stateful Multilayer Inspection Firewalls.

Which of the following statements correctly defines a firewall?

The correct answer is It is a combination of both, software and hardware devices to permit or deny network transmission based on a set of rules. A firewall is a combination of both, software and hardware devices to permit or deny network transmission based on a set of rules.

Which one is not true about a firewall?

Explanation. Firewalls cannot protect against PC Viruses Edit: This isn't really accurate anymore.

What is the main function of a firewall?

At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet. A firewall's main purpose is to allow non-threatening traffic in and to keep dangerous traffic out.

Which of the following is true about a firewall?