Computer practice question for SSC. Review the correct answer and explanation, then continue with related practice below.
In computing, ________ is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Correct Answerसही उत्तर
D. FirewallD. फायरवॉल
Explanationव्याख्या
The correct answer is Firewall.
According to the source, a firewall is a network-security device that monitors and filters incoming and outgoing network traffic on the basis of an organisation's previously established security policies.
The book further describes a firewall, at its most basic level, as the barrier that sits between a private internal network and the public Internet.
Therefore the complete source-supported revision chain is: Firewall — Network Security Device
System — monitors incoming traffic — monitors outgoing traffic — filters traffic — predetermined or established security policies — barrier between private internal network and public Internet.
Cookie, Spyware and Spam are distractors.
This question is concept-based and the definition itself can serve as a strong clue.
If a future question asks which security mechanism controls network traffic according to predefined rules, the expected answer is Firewall.
The source does not discuss hardware versus software firewalls, packet filtering, ports, protocols, stateful inspection or firewall configuration.
Therefore those advanced technical details have not been added.
Students should focus on three words from the source: monitor, filter and barrier.
Together they capture the purpose described in the book.
Quick revision: Firewall = monitors and filters incoming
outgoing network traffic using security policies; barrier between private network and public Internet.
Therefore option (d), Firewall, is correct.
सही उत्तर Firewall है। स्रोत के अनुसार Firewall एक network-security device है जो organisation की previously established security policies के आधार पर incoming और outgoing network traffic को monitor और filter करता है। Book इसे basic level पर private internal network और public Internet के बीच मौजूद barrier के रूप में भी describe करती है। इसलिए complete source-supported revision chain है: Firewall — Network Security Device/System — Incoming Traffic Monitoring — Outgoing Traffic Monitoring — Filtering — Security Policies — Barrier between Private Internal Network and Public Internet। Cookie, Spyware और Spam distractors हैं। यह definition-based question है और future exam में इसी definition को देकर term identify करने को कहा जा सकता है। Source hardware versus software firewall, packet filtering, ports, protocols, stateful inspection या configuration की advanced details नहीं देती। इसलिए outside technical information नहीं जोड़ी गई है। Students source के तीन key words याद रखें: Monitor — Filter — Barrier। यही Firewall के purpose को source के अनुसार summarize करते हैं। Quick revision: Firewall = Security Rules के आधार पर Incoming/Outgoing Network Traffic को Monitor और Filter करने वाला System; Private Network और Public Internet के बीच Barrier। इसलिए विकल्प (d), Firewall, सही उत्तर है।
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