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NEW QUESTION # 501
Which of the following things need to be identified during attack surface visualization?
Answer: A
NEW QUESTION # 502
Which of the following is an intrusion detection system that reads all incoming packets and tries to find suspicious patterns known as signatures or rules?
Answer: D
Explanation:
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 systems does. Answer option A is incorrect. 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 B is incorrect. An intrusion prevention system (IPS) is a network security device that monitors network and/or system activities for malicious or unwanted behavior and can react, in real-time, to block or prevent those activities. When an attack is detected, it can drop the offending packets while still allowing all other traffic to pass. Answer option C is incorrect. A demilitarized zone (DMZ) is a physical or logical subnetwork that contains and exposes external services of an organization to a larger network, usually the Internet. 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 the whole of the network. Hosts in the DMZ have limited connectivity to specific hosts in the internal network, though communication with other hosts in the DMZ and to the external network is allowed. This allows hosts in the DMZ to provide services to both the internal and external networks, while an intervening firewall controls the traffic between the DMZ servers and the internal network clients. In a DMZ configuration, most computers on the LAN run behind a firewall connected to a public network such as the Internet.
NEW QUESTION # 503
Kyle is an IT consultant working on a contract for a large energy company in Houston. Kyle was hired on to do contract work three weeks ago so the company could prepare for an external IT security audit. With suggestions from upper management, Kyle has installed a network-based IDS system. This system checks for abnormal behavior and patterns found in network traffic that appear to be dissimilar from the traffic normally recorded by the IDS. What type of detection is this network-based IDS system using?
Answer: B
Explanation:
Anomaly detection in network-based Intrusion Detection Systems (IDS) involves establishing a baseline of normal behavior for the network or system and then monitoring for deviations from this baseline. The IDS analyzes traffic patterns, system performance, user behavior, and other metrics to detect anomalies that could indicate a potential security breach. This method is particularly effective for identifying new or unknown threats that do not match any known signatures or definitions. By focusing on irregular patterns rather than predefined signatures, anomaly detection can provide early warnings of malicious activities that might otherwise go unnoticed.
NEW QUESTION # 504
Which of the following filters can be used to detect UDP scan attempts using Wireshark?
Answer: C
Explanation:
The correct filter to detect UDP scan attempts using Wireshark is not listed among the options provided. To detect UDP scan attempts, a Wireshark filter that targets UDP traffic specifically would be used, rather than an ICMP type and code filter. A common method to detect a UDP scan is to look for a large amount of UDP packets sent to different ports, which can be indicative of a scanning activity. The filter would typically include parameters that isolate UDP traffic, such as udp.port or udp.dstport combined with a range or list of ports.
NEW QUESTION # 505
Which of the following is a software tool used in passive attacks for capturing network traffic?
Answer: A
Explanation:
A sniffer is a software tool that is used to capture any network traffic. Since a sniffer changes the NIC of the LAN card into promiscuous mode, the NIC begins to record incoming and outgoing data traffic across the network. A sniffer attack is a passive attack because the attacker does not directly connect with the target host. This attack is most often used to grab logins and passwords from network traffic. Tools such as Ethereal, Snort, Windump, EtherPeek, Dsniff are some good examples of sniffers. These tools provide many facilities to users such as graphical user interface, traffic statistics graph, multiple sessions tracking, etc. Answer option C is incorrect. An intrusion prevention system (IPS) is a network security device that monitors network and/or system activities for malicious or unwanted behavior and can react, in real-time, to block or prevent those activities. When an attack is detected, it can drop the offending packets while still allowing all other traffic to pass. Answer option B is incorrect. An IDS (Intrusion Detection System) is a device or software application that monitors network and/or system activities for malicious activities or policy violations and produces reports to a Management Station. Intrusion prevention is the process of performing intrusion detection and attempting to stop detected possible incidents. Intrusion detection and prevention systems (IDPS) are primarily focused on identifying possible incidents, logging information about them, attempting to stop them, and reporting them to security administrators. Answer option D is incorrect. Warchalking is the drawing of symbols in public places to advertise an open Wi-Fi wireless network. Having found a Wi-Fi node, the warchalker draws a special symbol on a nearby object, such as a wall, the pavement, or a lamp post. The name warchalking is derived from the cracker terms war dialing and war driving.
NEW QUESTION # 506
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