Pseudocode represents logic written in plain, human-readable language that resembles programming structure but isn't actual code:
* "Pseudocode allows programmers to design algorithms using readable statements before translating them into actual code."
* Branch and sequence refer to control flow structures, and object-oriented refers to a programming paradigm.
Reference: CompTIA ITF+ FC0-U71 Official Study Guide, Chapter 8 - Programming Concepts.

RAM (Random Access Memory) is volatile memory, meaning its contents are erased when power is removed.
According to the CompTIA ITF+ FC0-U71 Official Study Guide:
* "RAM is volatile storage, which means that it requires constant power to maintain the stored information. When power is turned off, all data in RAM is lost."
* BIOS (firmware), NIC (hardware interface), and CPU (hardware processor) remain unaffected by shutdowns regarding stored information.
Reference: CompTIA ITF+ FC0-U71 Official Study Guide, Chapter 3 - Computing Components.

The largest unit is determined by converting all values to the same unit:
* 2TB = 2,000GB
* 100GB = 100GB
* 4,000MB = 4GB
* 50KB = 0.00005GB
Thus, 2TB is the largest. As described in the CompTIA ITF+ FC0-U71 Study Guide:
* "Data storage capacity is measured using standard units such as KB, MB, GB, and TB, where 1TB =
1,000GB."
Reference: CompTIA ITF+ FC0-U71 Official Study Guide, Chapter 3 - Data Representation and Storage.

When a new vulnerability is discovered in software, the best way to secure it is by applying updates (patches) released by the software vendor. According to the CompTIA ITF+ objectives:
"Vendors regularly release software updates and security patches to fix vulnerabilities that could be exploited by attackers. Installing these patches promptly is crucial for maintaining system security." Although configuring a firewall and authentication improves overall security, they do not directly patch or fix the vulnerability. Uninstalling may be an option only if a patch is unavailable or the software is no longer needed. Therefore, the best and most proactive response is B: Apply updates.

The correct answer is D. Integrity. The phrase "contents are unchanged" directly refers to whether data has remained accurate, consistent, and unaltered. In security, integrity is the principle that protects data from unauthorized or accidental modification. Confidentiality is about keeping private data from unauthorized viewing. Authentication verifies identity. Availability ensures systems or data can be accessed when needed.
Only integrity matches checking that a downloaded file has not changed.
Exact Extract/Reference: The Tech+ Study Guide explains that integrity means "the data is accurate and consistent and from the indicated source," and identifies data integrity concerns such as unauthorized information alteration. The guide's summary also states that integrity is ensuring data is "true and correct."