Free PCNSE Firewall Technology and Architecture Questions and Answers — Questions and Answers
Question 1: A virtual container known as a ____ is used to encapsulate data delivered across an Ethernet network.
- port
- frame (Correct answer)
- envelope
- socket
Correct answer: frame
In Ethernet networks, data is encapsulated into a virtual container known as a frame for transmission. A frame includes the actual data payload along with essential header and trailer information, such as source and destination MAC addresses, error-checking codes, and other control fields. This structured format allows data to be efficiently and reliably delivered across the Ethernet network.
Question 2: An addressable device on a network that can receive, process, and react to network signals is known as a .
- network node (Correct answer)
- IP block
- static node
- cluster
Correct answer: network node
A network node is any addressable device connected to a network that can send, receive, and process network signals. This broad definition includes various devices such as computers, servers, printers, routers, and switches, all of which contribute to the network's functionality. Each node has a unique identifier, like an IP address or MAC address, allowing it to communicate within the network.
Question 3: It's called ____ to recognize a person automatically using their physical or behavioral traits.
- Biometrics (Correct answer)
- Fingerprint analysis
- Biological monitoring
- Bioscanning
- Personal characteristics scanning
Correct answer: Biometrics
Biometrics refers to the automatic recognition of individuals based on their unique physical or behavioral traits. This technology utilizes distinct characteristics such as fingerprints, facial features, iris patterns, or voice recognition for identification and authentication purposes. Biometric systems offer a secure and convenient method of verifying identity, widely used in access control and security systems.
Question 4: A ____ is a firewall.
- software that encrypts data before it leaves an internal network
- security system consisting of software and hardware between an internal network and the Internet (Correct answer)
- software that removes viruses from a computer network
- backup system for a database so it can be recovered if the original is destroyed
- physical enclosure of a data storage system to keep it safe from fire, water and other elements
Correct answer: security system consisting of software and hardware between an internal network and the Internet
A firewall is a critical security system, comprising both software and hardware, that acts as a protective barrier between a trusted internal network and untrusted external networks like the Internet. Its primary function is to monitor and control incoming and outgoing network traffic based on predefined security rules. This helps to prevent unauthorized access and protect the internal network from various cyber threats.
Question 5: A dramatic increase in the number of message packets being transmitted into the network was detected by the network administrator of the Chocolate Biscuit International company. He begins procedures to look into the cause of the increase. The system crashes and shuts down before he could find anything out from his inquiry. Attacks on Chocolate Biscuit International could happen.
- Distraction of Service
- Denial of Service (Correct answer)
- ARP Spoofing
- URL spoofing
Correct answer: Denial of Service
The scenario described, with a dramatic increase in message packets overwhelming the network and causing a system crash, is a classic indication of a Denial of Service (DoS) attack. A DoS attack aims to make a machine or network resource unavailable to its intended users by flooding it with traffic or requests, thereby preventing legitimate access. This disruption can lead to significant operational downtime.
Question 6: Spoofing:
- involves malicious tools designed to channel an individual organization or system network traffic
- involves malicious practices designed to deceive systems, individuals, and organizations into perceiving something to be what it is not. (Correct answer)
- involves tools designed to deceive systems, individuals, and organizations into employing hoax software
- involves malicious tools designed to redirect an individual organization or systems network traffic
Correct answer: involves malicious practices designed to deceive systems, individuals, and organizations into perceiving something to be what it is not.
Spoofing involves malicious practices designed to deceive systems, individuals, and organizations into perceiving something to be what it is not. Attackers use spoofing to disguise themselves or their data as legitimate entities, such as faking IP addresses, email sender addresses, or website URLs. This deception can be used to gain unauthorized access, spread malware, or steal sensitive information.
Question 7: Which of the following describes an access policy for a firewall?
- It determines the number of zones your firewall will have.
- It gives your firewall threat-intelligence.
- It determines the operational state (on/off) of the firewall.
- It provides a set of rules that determine who gets in or out of your network and who doesn't (Correct answer)
Correct answer: It provides a set of rules that determine who gets in or out of your network and who doesn't
An access policy for a firewall provides a set of rules that explicitly determine who gets in or out of your network and who doesn't. These rules define criteria such as source and destination IP addresses, ports, protocols, and applications, governing which network connections are permitted or denied. This granular control is fundamental to network security, protecting against unauthorized access and malicious traffic.
Free PCNSE Firewall Technology and Architecture Questions and Answers
A virtual container known as a ____ is used to encapsulate data delivered across an Ethernet network.