CompTIA Updated N10-009 Exam Questions and Answers by amayah

Understanding ACLs:

Access Control Lists (ACLs): A set of rules used to control network traffic and restrict access to network resources by filtering packets based on IP addresses, protocols, or ports.

Implementing Security Zones:

Defining Zones: ACLs can be used to create security zones by applying specific rules to different departments, ensuring that only authorized traffic is allowed between these zones.

Control Traffic: ACLs control inbound and outbound traffic at network boundaries, enforcing security policies and preventing unauthorized access.

Comparison with Other Options:

Port Security: Limits the number of devices that can connect to a switch port, preventing MAC address flooding attacks, but not used for defining security zones.

Content Filtering: Blocks or allows access to specific content based on predefined policies, typically used for web filtering rather than network segmentation.

NAC (Network Access Control): Controls access to the network based on the security posture of devices but does not define security zones.

Implementation Steps:

Define ACL rules based on the requirements of each department.

Apply these rules to the appropriate network interfaces or firewall policies to segment the network into security zones.

A UPS (Uninterruptible Power Supply) provides backup power to devices during a power outage, allowing for continuous operation and protecting against sudden shutdowns that could cause data loss or equipment damage. The document confirms:

“A UPS (Uninterruptible Power Supply) is essential for maintaining power to critical devices during an outage, protecting data and ensuring continuous operation until power is restored or a safe shutdown can be performed.”

A Client-to-Site VPN allows a remote user to securely connect to a company's internal network, providing access as if they were physically on-site.

224.0.0.1 is a multicast address that allows packets to be sent to all hosts within a multicast group. Since video streaming often uses multicast to efficiently distribute data to multiple clients without unnecessary duplication, this is the correct answer.

•Why not the other options?

•127.0.0.1 (A) – This is the loopback address used for internal device testing, not for multicast traffic.

•172.17.1.1 (B) – This is a private unicast address, meaning it can only send packets to one specific host.

•240.0.0.1 (D) – This falls within the reserved experimental IP address range and is not used for multicast.