Question # 1
| Which type of antenna is based on the principle of a satellite dish and can pick up Wi-Fi signals from a distance of ten miles of more? | | A. Yagi antenna | | B. Directional antenna | | C. Omnidirectional antenna | | D. Parabolic Grid antenna |
D. Parabolic Grid antenna
Explanation:
The Parabolic Grid antenna is designed based on the principle of a satellite dish. This type of antenna can focus the radio waves onto a particular direction and is capable of picking up Wi-Fi signals from very long distances, often ten miles or more, depending on the specific design and conditions. It is highly directional and has a narrow focus, making it ideal for point-to-point communication in long-range Wi-Fi networks.
References: The EC-Council’s Certified Network Defender (CND) course materials include information on various types of antennas and their uses in network defense. The Parabolic Grid antenna is mentioned as a type of antenna that can pick up signals from a great distance, which aligns with the principles of satellite dishes as described in the CND study guide1.
Question # 2
| Which encryption algorithm h used by WPA5 encryption? | | A. RC4.TKIP | | B. RC4 | | C. AES-GCMP 256 | | D. AES-CCMP |
C. AES-GCMP 256
Explanation:
WPA5 is not a standard term used in the industry, and there seems to be a confusion or typo in the question. However, based on the context of Wi-Fi security and encryption, the closest relevant standard is WPA3, which uses AES-GCMP 256 as its encryption algorithm. WPA3 is the successor to WPA2 and provides enhanced security features. It uses the Advanced Encryption Standard (AES) with Galois/Counter Mode Protocol (GCMP) 256-bit encryption, which offers a higher level of security than the previous encryption methods used in WPA2, such as AES-CCMP. AES-GCMP 256 provides robust protection against various attacks and is designed to work efficiently on a wide range of devices, including those with limited processing capabilities.
References: The information provided is based on the current understanding of Wi-Fi security protocols, specifically the WPA3 standard, which is known to use AES-GCMP 256-bit encryption123.
Question # 3
| Richard has been working as a Linux system administrator at an MNC. He wants to maintain a productive and secure environment by improving the performance of the systems through Linux patch management. Richard is using Ubuntu and wants to patch the Linux systems manually. Which among the following command installs updates (new ones) for Debun based Linux OSes? | | A. sudo apt-get dist-upgrade
| | B. sudo apt-get update
| | C. sudo apt-get dist-update
| | D. sudo apt-get upgrate
|
A. sudo apt-get dist-upgrade
Explanation:
The command sudo apt-get dist-upgrade is used to install updates for Debian-based Linux operating systems, which includes Ubuntu. This command intelligently handles changes with new versions of packages and will install the newest versions of all packages currently installed on the system. It also handles changing dependencies with new versions of packages and will attempt to upgrade the most important packages at the expense of less important ones if necessary. The dist-upgrade command, therefore, will install or remove packages as necessary to complete the full update.
Question # 4
| Which technique is used in RAID level 0 where the data is split into blocks and written evenly across multiple disks? | | A. Disk mirroring | | B. Disk stripping | | C. Data splitting | | D. Disk partition |
B. Disk stripping
Explanation:
RAID level 0 employs a technique known as disk stripping, which involves splitting data into blocks and distributing them evenly across multiple disks. This method enhances performance by allowing simultaneous read and write operations on multiple drives. However, it does not provide redundancy, meaning if one drive fails, all data on the array could be lost. The primary advantage of disk stripping is the improved I/O performance due to the parallel processing of data across the drives.
References: This explanation is based on standard RAID technology descriptions, which are part of the Certified Network Defender (CND) curriculum that covers various data storage strategies, including RAID configurations1234.
Question # 5
| An attacker has access to password hashes of a Windows 7 computer. Which of the following attacks can the attacker use to reveal the passwords? | | A. Brute force
| | B. XSS | | C. Dictionary attacks
| | D. Rainbow table
|
D. Rainbow table
Explanation:
In the context of password hashes on a Windows 7 computer, a Rainbow Table attack is a feasible method an attacker might use to reveal passwords. This type of attack utilizes precomputed tables known as rainbow tables that contain hash values for every possible combination of characters. An attacker with access to password hashes can use these tables to look up the corresponding plaintext passwords. The effectiveness of rainbow tables stems from their ability to reverse cryptographic hash functions, which are used to store passwords securely. Since Windows 7 uses NTLM hashes, which are known to be vulnerable to rainbow table attacks, this method is particularly relevant12.
Question # 6
| George was conducting a recovery drill test as a part of his network operation. Recovery drill tests are conducted on the______________. | | A. Archived data | | B. Data in transit | | C. Backup data |
D.
Explanation:
Recovery drill tests are an essential part of disaster recovery planning. They are conducted on backup data to ensure that the data can be successfully restored in the event of a disaster. During these drills, the backup systems are tested to verify that they function correctly and that the data is intact and recoverable. This process helps organizations prepare for actual disaster scenarios and ensures that their backup solutions are effective and reliable.
References: The practice of conducting recovery drill tests on backup data is a standard procedure in disaster recovery and business continuity planning, as outlined in various IT and network security resources123.
Question # 7
| Rosa is working as a network defender at Linda Systems. Recently, the company migrated from Windows to MacOS. Rosa wants to view the security related logs of her system, where con she find these logs? | | A. /private/var/log | | B. /var/log/cups/access-log | | C. /Library/Logs/Sync | | D. /Library/Logs |
A. /private/var/log
Explanation:
In MacOS, security-related logs are typically stored in the /private/var/log directory. This location is used to store various system logs, including authentication attempts and other security events. The secure.log file within this directory is particularly relevant for tracking security incidents, as it records authentication attempts and other security-related events. It’s important for network defenders like Rosa to be familiar with these log locations to monitor and respond to potential security issues on the systems they manage12.
References: The information provided here is consistent with standard MacOS logging practices and the EC-Council’s Certified Network Defender (CND) curriculum, which includes understanding the security mechanisms of different operating systems and how to locate and interpret system logs12. For more detailed information, please refer to the official CND study materials and documents provided by the EC-Council.
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