CERTIFIED-IN-CYBERSECURITY · Question #34
CERTIFIED-IN-CYBERSECURITY Question #34: Real Exam Question with Answer & Explanation
The correct answer is B: Firewalls. Standard firewalls examine IP packet headers and flags in order to block or allow traffic from predefined rules. More recently, firewalls with Intrusion Detection Capability (IDC) also analyze each individual packet, looking for specific patterns known to be malicious, and then b
Question
Which of the following types of devices inspect packet header information to either allow or deny network traffic?
Options
- ARouters
- BFirewalls
- CHubs
- DSwitches
Explanation
Standard firewalls examine IP packet headers and flags in order to block or allow traffic from predefined rules. More recently, firewalls with Intrusion Detection Capability (IDC) also analyze each individual packet, looking for specific patterns known to be malicious, and then blocking traffic whenever such patterns are found. Routers, Switches, and Hubs have limited packet filtering capabilities, or none at all. A Router is a device that acts as a gateway between two or more networks by relaying and directing data packets between them. Hubs broadcast (i.e. copy) packets between ports so that all segments of a LAN can see all packets. A Switch is "smarter" than a Hub and can forward packets between network segments instead of copying them.
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