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| Section | Weight | Objectives |
|---|---|---|
| Network Threats, Attacks, and Vulnerabilities | 12% | - Vulnerability assessment and classification - Attack methodologies and defense strategies - Types of threats and attack vectors |
| Incident Detection, Response, and Recovery | 14% | - Incident handling and response procedures - Business continuity and disaster recovery - Log management and correlation - Network traffic monitoring and analysis |
| Application and Data Protection | 10% | - Web and cloud application security - Data security, encryption, and integrity - Database security and protection - Secure application development and deployment |
| Computer Network and Defense Fundamentals | 5% | - IP addressing and protocols - OSI and TCP/IP models - Network defense concepts and processes - Network types, topologies, and components |
| Network Security Controls, Protocols, and Devices | 8% | - Encryption and PKI - Access control mechanisms - Authentication, Authorization, and Accounting (AAA) - Security protocols and devices (firewalls, IDS/IPS) |
| Virtual, Cloud, and Wireless Network Protection | 15% | - Wireless network security protocols and hardening - Virtualization and container security - Software-defined networking security - Cloud security models (IaaS, PaaS, SaaS) |
| Network Perimeter Protection | 10% | - Perimeter security architecture - Network segmentation and isolation - Firewall deployment and configuration - DMZ, VPN, and secure gateway implementation |
| Security Policies, Standards, and Compliance | 6% | - Industry standards, laws, and regulations - Design and implementation of security policies - Compliance requirements and audits |
| Endpoint Protection | 20% | - Endpoint detection and response - Endpoint security controls and software - Operating system hardening (Windows, Linux) - Mobile and IoT device security |
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NEW QUESTION # 64
A company has the right to monitor the activities of their employees on different information systems according to the _______policy.
Answer: C
Explanation:
The right of a company to monitor the activities of their employees on its information systems is typically defined under the "User Access Control" policy. This policy sets out the rules and conditions under which employee activities can be monitored, ensuring that monitoring is conducted legally and ethically while protecting the privacy rights of employees. It often includes provisions for the monitoring of email, internet use, and other digital interactions to safeguard company assets and ensure compliance with corporate policies.
NEW QUESTION # 65
With which of the following forms of acknowledgment can the sender be informed by the data receiver about all segments that have arrived successfully?
Answer: D
Explanation:
Selective Acknowledgment (SACK) is one of the forms of acknowledgment. With selective acknowledgments, the sender can be informed by a data receiver about all segments that have arrived successfully, so the sender retransmits only those segments that have actually been lost. The selective acknowledgment extension uses two TCP options: The first is an enabling option, "SACK-permitted", which may be sent in a SYN segment to indicate that the SACK option can be used once the connection is established. The other is the SACK option itself, which can be sent over an established connection once permission has been given by "SACK-permitted".
Answer option A is incorrect. Block Acknowledgment (BA) was initially defined in IEEE 802.11e as an optional scheme to improve the MAC efficiency. IEEE 802.11n capable devices are also referred to as High Throughput (HT) devices. Instead of transmitting an individual ACK for every MPDU, multiple MPDUs can be acknowledged together using a single BA frame. Block Ack (BA) contains bitmap size of 64*16 bits. Each bit of this bitmap represents the status (success/failure) of an MPDU.
Answer option B is incorrect. With Negative Acknowledgment, the receiver explicitly notifies the sender which packets, messages, or segments were received incorrectly that may need to be retransmitted.
Answer option C is incorrect. With Cumulative Acknowledgment, the receiver acknowledges that it has correctly received a packet, message, or segment in a stream which implicitly informs the sender that the previous packets were received correctly. TCP uses cumulative acknowledgment with its TCP sliding window.
NEW QUESTION # 66
During his routine network monitoring, a network defender notices that systems in the finance department are sending responses intended for the payroll application server to an unknown device within the same subnet. Upon checking the ARP cache of the affected clients, he finds that the MAC address associated with the payroll server's IP has been replaced with that of the unfamiliar device. There are no changes in DNS settings or routing rules. Which network-level attack technique is responsible for this behavior?
Answer: B
Explanation:
ARP poisoning occurs when an attacker sends forged ARP messages on a local network to associate their MAC address with the IP address of a legitimate device. This manipulation causes other systems on the subnet to update their ARP cache with the attacker's MAC address instead of the real device. As a result, traffic intended for the legitimate server is redirected to the attacker's device, enabling interception or manipulation of network communications.
NEW QUESTION # 67
Which of the following is a technique for gathering information about a remote network protected by a firewall?
Answer: B
Explanation:
Fire walking is a technique for gathering information about a remote network protected by a firewall. This technique can be used effectively to perform information gathering attacks. In this technique, an attacker sends a crafted packet with a TTL value that is set to expire one hop past the firewall. If the firewall allows this crafted packet through, it forwards the packet to the next hop. On the next hop, the packet expires and elicits an ICMP
"TTL expired in transit" message to the attacker. If the firewall does not allow the traffic, there should be no response, or an ICMP "administratively prohibited" message should be returned to the attacker. A malicious attacker can use firewalking to determine the types of ports/protocols that can bypass the firewall. To use firewalking, the attacker needs the IP address of the last known gateway before the firewall and the IP address of a host located behind the firewall. The main drawback of this technique is that if an administrator blocks ICMP packets from leaving the network, it is ineffective.
Answer option B 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.
Answer option C is incorrect. War driving, also called access point mapping, is the act of locating and possibly exploiting connections to wireless local area networks while driving around a city or elsewhere. To do war driving, one needs a vehicle, a computer (which can be a laptop), a wireless Ethernet card set to work in promiscuous mode, and some kind of an antenna which can be mounted on top of or positioned inside the car.
Because a wireless LAN may have a range that extends beyond an office building, an outside user may be able to intrude into the network, obtain a free Internet connection, and possibly gain access to company records and other resources.
Answer option D is incorrect. War dialing or wardialing is a technique of using a modem to automatically scan a list of telephone numbers, usually dialing every number in a local area code to search for computers, Bulletin board systems, and fax machines. Hackers use the resulting lists for various purposes, hobbyists for exploration, and crackers - hackers that specialize in computer security - for password guessing.
NEW QUESTION # 68
Elden is working as a network administrator at an IT company. His organization opted for a virtualization technique in which the guest OS is aware of the virtual environment in which it is running and communicates with the host machines for requesting resources. Identify the virtualization technique implemented by Elden's organization.
Answer: A
Explanation:
Para virtualization is a virtualization technique where the guest operating system is aware of the virtual environment and can communicate directly with the host machine's hypervisor to request resources. This direct communication allows for a more efficient system, as it does not require the same level of emulation and overhead as full virtualization. In para virtualization, the guest OS is typically modified to interact with a thin layer of software called a hypervisor, which coordinates access to the physical hardware resources. This setup is designed to reduce the performance overhead that typically occurs with full virtualization, where the guest OS must go through a more complex abstraction layer to access resources.
NEW QUESTION # 69
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