Which of the following is the most important consideration when opening a file on an OS GUI?
Answer(s): A
The file extension determines which application the OS uses to open the file in a GUI environment. It's the key factor the OS checks to associate the file with the appropriate program (e.g., .docx with Word, .jpg with an image viewer). The other options are relevant in broader contexts but not immediately critical when simply opening a file.
A database has the following schema:Which of the following is the number of records in the schema?
Answer(s): B
Each row in the table (excluding the header row) represents a record in the database schema. The table has 4 data rows (John, Jane, Allison, Anna), so the number of records is 4.
Which of the following devices extends the range of a network?
Answer(s): D
An access point extends the range of a wireless network by allowing more devices to connect and by coveringadditional physical areas. The other options serve different purposes:Modem connects to the internet,Server provides services,Host firewall protects a device but does not extend network range.
A user receives a notification about a new software vulnerability. Which of the following is the best way to secure the software?
Applying updates (also called patching) is the most effective way to secure software after a vulnerability is discovered. Vendors typically release patches that fix security flaws. While firewalls and authentication add layers of protection, they do not directly fix vulnerabilities. Uninstalling the program may not be practical or necessary.
Which of the following is used to determine whether users accessed inappropriate online content?
Web browser history shows the websites that a user has visited and is the most direct way to determine if inappropriate online content was accessed.Other options:System logs typically track system events,Cookie data stores session or site preferences,Location tracking shows physical location, not browsing activity.
A company updates its password policy to require that all passwords be reset every 60 days. Which of the following best describes this requirement?
Answer(s): C
Password expiration refers to the requirement that passwords must be changed after a certain period--in this case, every 60 days.Other options:Password complexity involves rules about characters used,Password management is a broader concept including storage and retrieval, Password privacy refers to keeping passwords confidential.
Which of the following encryption types protects data at rest?
File-level encryption protects data at rest by encrypting files stored on a disk or drive, ensuring that data is secure even when not actively being transmitted.Other options:VPN and HTTPS protect data in transit,Plaintext offers no encryption or protection.
Which of the following is the smallest storage unit?
In terms of size from smallest to largest: Kilobyte < Megabyte < Terabyte < Petabyte.
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