N10-008 Reviews Questions

IPSec is a protocol that provides secure communication between two networks or hosts over an untrusted network, such as the Internet. IPSec uses encryption and authentication to protect the data from eavesdropping, tampering, and replay attacks. IPSec also supports pre-shared key (PSK) as one of the methods for initial authentication between the peers

• A basic service set (BSS) is a group of wireless devices that share the same service set identifier (SSID) and communicate with each other through a single access point (AP). A BSS is also known as an infrastructure mode network1.
• An extended service set (ESS) is a group of two or more BSSs that are connected by a distribution system (DS), such as a switch or a router. An ESS allows wireless devices to roam between different APs and maintain network connectivity. An ESS is also known as a wireless LAN (WLAN)2.
• An independent basic service set (IBSS) is a group of wireless devices that communicate with each other directly without using an AP or a DS. An IBSS is also known as an ad hoc network or a peer-to-peer network3.
• MU-MIMO (Multi-User Multiple-Input Multiple-Output) is a technology that allows an AP to transmit data to multiple wireless devices simultaneously using multiple antennas and spatial streams. MU-MIMO can improve the network efficiency and performance by reducing the waiting time and increasing the throughput4.
• The scenario described in the question is an example of an IBSS, as the two laptops are connected directly to each other using 802.11ac without an AP. Therefore, the correct answer is C.

References:

• 1: BSS
• 2: ESS
• 3: IBSS
• 4: MU-MIMO

The objective that an evil twin achieves is log-in credentials. An evil twin is a type of rogue access point that mimics a legitimate wireless network by using the same SSID, encryption, and authentication methods. An evil twin can trick unsuspecting users into connecting to it instead of the real network, and then capture their log-in credentials or other sensitive data. An evil twin can also perform man-in-the-middle attacks, redirecting or modifying the user’s traffic. References: CompTIA Network+ N10-008 Certification Study Guide, page 358; The Official CompTIA Network+ Student Guide (Exam N10-008), page 14-1.

Tamper detection is a physical security feature that can alert the technician when someone opens the server rack door without authorization. Tamper detection sensors can be installed inside the equipment or on the rack itself, and they can send an alert via email, SMS, or other methods. Tamper detection can help prevent unauthorized access, theft, or damage to the network assets.

References:

• Physical Security – N10-008 CompTIA Network+ : 4.51