CompTIA Updated 220-1102 Exam Questions and Answers by emre

A checksum is a cryptographic hash function (like MD5 or SHA-256) used to verify the integrity of files. When downloading files from the internet, websites often provide the checksum value of the file so that users can ensure the file was not altered during download or corrupted. The user can generate the checksum on their local system and compare it to the one provided by the site. If they match, the file is intact and safe to use. Other options like BitLocker or FileVault are encryption tools, and a password manager is irrelevant to file verification.

Wireless AP (LAN Configuration)

Encryption type: ✅ WPA2 PSK

WPA2 PSK is the most commonly used secure encryption method for home wireless networks.

LAN IP Selection: ✅ 192.168.10.1

This is a typical private IP range for LAN and matches the devices (like PC and game console).

???? Router (Port Forwarding)

LAN IP for Port Forwarding: ✅ 192.168.10.1

The router will forward requests to this internal LAN IP.

Port Forward Rule: ✅ Allow TCP Any 3389

TCP Port 3389 is used for Remote Desktop Protocol (RDP), which allows remote access to a Windows PC.

???? Screened Subnet (DMZ or Firewall Zone)

LAN IP: ✅ 10.100.0.1

Typical private IP for screened subnet or DMZ zone, separating untrusted from trusted zones.

????️ Placing Devices

PC → ✅ LAN (Wireless AP)

The PC is accessed via RDP and resides on the trusted internal LAN.

Game Console → ✅ Screened Subnet (Firewall)

Game consoles often require open access to multiple ports and services, making them ideal candidates for placement in a DMZ/Screened Subnet to prevent unnecessary exposure of the internal LAN.

To prevent unauthorized access to data if a mobile device is lost or stolen, enabling biometric authentication (such as fingerprint or facial recognition) ensures only authorized users can unlock the device. Encryption protects stored data by making it unreadable without proper credentials, securing the device contents even if physically accessed. Remote wipe and device tracking assist in device recovery or data removal but do not directly prevent unauthorized access. Antivirus software and VPN access protect against malware and network threats but do not guard against physical access. Core 2 Security objectives emphasize biometric authentication and encryption as key security controls for mobile devices.

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Certainly! Here are questions 26 to 31 reviewed and detailed per your format: