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| Section | Objectives |
|---|---|
| Topic 1: Network Security Monitoring | - Traffic monitoring and anomaly detection - Log analysis and SIEM fundamentals |
| Topic 2: Threats and Vulnerabilities | - Malware and attack vectors - Network reconnaissance and exploitation techniques |
| Topic 3: Network Defense Fundamentals | - Network security principles and architectures - Security policies and procedures |
| Topic 4: Network Security Controls | - Firewalls, IDS/IPS, and network access control - Secure network devices configuration |
| Topic 5: Data and Application Security | - Data protection mechanisms and encryption basics - Endpoint and application hardening |
| Topic 6: Incident Response and Recovery | - Disaster recovery and business continuity - Incident handling lifecycle |
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NEW QUESTION # 19
Which of the following is an intrusion detection system that monitors and analyzes the internals of a computing system rather than the network packets on its external interfaces?
Answer: D
Explanation:
A host-based intrusion detection system (HIDS) produces a false alarm because of the abnormal behavior of users and the network. A host-based intrusion detection system (HIDS) is an intrusion detection system that monitors and analyses the internals of a computing system rather than the network packets on its external interfaces. A host-based Intrusion Detection System (HIDS) monitors all or parts of the dynamic behavior and the state of a computer system. HIDS looks at the state of a system, its stored information, whether in RAM, in the file system, log files or elsewhere; and checks that the contents of these appear as expected.
Answer option D is incorrect. A network intrusion detection system (NIDS) is an intrusion detection system that tries to detect malicious activity such as denial of service attacks, port scans or even attempts to crack into computers by monitoring network traffic. A NIDS reads all the incoming packets and tries to find suspicious patterns known as signatures or rules. It also tries to detect incoming shell codes in the same manner that an ordinary intrusion detection system does.
Answer option A is incorrect. IPS (Intrusion Prevention Systems), also known as Intrusion Detection and Prevention Systems (IDPS), are network security appliances that monitor network and/or system activities for malicious activity. The main functions of "intrusion prevention systems" are to identify malicious activity, log information about said activity, attempt to block/stop activity, and report activity. An IPS can take such actions as sending an alarm, dropping the malicious packets, resetting the connection and/or blocking the traffic from the offending IP address. An IPS can also correct CRC, unfragment packet streams, prevent TCP sequencing issues, and clean up unwanted transport and network layer options.
Answer option C is incorrect. DMZ, or demilitarized zone, is a physical or logical subnetwork that contains and exposes an organization's external services to a larger untrusted network, usually the Internet. The term is normally referred to as a DMZ by IT professionals. It is sometimes referred to as a Perimeter Network. The purpose of a DMZ is to add an additional layer of security to an organization's Local Area Network (LAN); an external attacker only has access to equipment in the DMZ rather than any other part of the network.
NEW QUESTION # 20
Adam, a malicious hacker, is sniffing an unprotected Wi-FI network located in a local store with Wireshark to capture hotmail e-mail traffic. He knows that lots of people are using their laptops for browsing the Web in the store. Adam wants to sniff their e-mail messages traversing the unprotected Wi-Fi network. Which of the following Wireshark filters will Adam configure to display only the packets with hotmail email messages?
Answer: B
Explanation:
Adam will use (http contains "hotmail") && (http contains "Reply-To") filter to display only the packets with hotmail email messages. Each Hotmail message contains the tag Reply-To: and "xxxx-xxx- xxx.xxxx.hotmail.com" in the received tag. Wireshark is a free packet sniffer computer application. It is used for network troubleshooting, analysis, software and communications protocol development, and education.
Wireshark is very similar to tcpdump, but it has a graphical front-end, and many more information sorting and filtering options. It allows the user to see all traffic being passed over the network (usually an Ethernet network but support is being added for others) by putting the network interface into promiscuous mode. Wireshark uses pcap to capture packets, so it can only capture the packets on the networks supported by pcap. It has the following features: Data can be captured "from the wire" from a live network connection or read from a file that records the already-captured packets. Live data can be read from a number of types of network, including Ethernet, IEEE 802.11, PPP, and loopback. Captured network data can be browsed via a GUI, or via the terminal (command line) version of the utility, tshark. Captured files can be programmatically edited or converted via command-line switches to the "editcap" program. Data display can be refined using a display filter. Plugins can be created for dissecting new protocols.
Answer options B, A, and D are incorrect. These are invalid tags.
NEW QUESTION # 21
Which of the following is a compatible network device that converts various communication protocols and are used to connect different network technologies?
Answer: B
NEW QUESTION # 22
Which of the following RAID storage techniques divides the data into multiple blocks, which are further written across the RAID system?
Answer: D
Explanation:
In RAID storage, striping is the technique that divides data into blocks and spreads them across multiple drives in the RAID array. This method enhances performance by allowing the drives to read and write data simultaneously, effectively increasing throughput and speed. Unlike mirroring, which duplicates data across drives, or parity, which provides redundancy, striping solely focuses on performance by distributing data across the RAID system without redundancy.
References: The concept of striping is associated with various RAID levels, particularly RAID 0, which is known for its striping technique without redundancy1. This information aligns with the objectives and documents of the Certified Network Defender (CND) course, which covers RAID storage techniques as part of its curriculum.
NEW QUESTION # 23
Which of the following policies is a set of rules designed to enhance computer security by encouraging users to employ strong passwords and use them properly?
Answer: A
Explanation:
A password policy is a set of rules designed to enhance computer security by encouraging users to employ strong passwords and use them properly. Password policies are account policies that are related to the users' accounts. Such policies are password-related settings that provide different constraints for the password's usage. Password policies can be configured to enforce users to provide passwords only in a specific way when they try to log on to their computers. These policies increase the effectiveness of the user's computers. Answer option C is incorrect. A group policy specifies how programs, network resources, and the operating system work for users and computers in an organization.
Answer option A is incorrect. An information protection policy ensures that information is appropriately protected from modification or disclosure.
Answer option B is incorrect. Remote access policy is a document that outlines and defines acceptable methods of remotely connecting to the internal network.
NEW QUESTION # 24
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