Tag: science & technology

Common mouse technologies include Mechanical, Optical, and Optical-Mechanical. These are real technologies used in computer mice. 'Motorized' is not a standard mouse technology category - mice use optical sensors or mechanical balls, not motors.

IRC stands for Internet Relay Chat, which is a protocol for real-time internet text messaging. It's not a channel, response system, or cache. IRC was one of the first forms of real-time internet chat.

Firewalls, strong passwords, and updated software all directly improve computer security by blocking threats, preventing unauthorized access, and patching vulnerabilities. VLAN is a network segmentation technology for organizing networks, not a security tool.

The question asks which company IS currently a hard disk drive manufacturer. Seagate is one of the major HDD manufacturers still in operation. Dell is a computer assembler (not a component manufacturer), Microsoft is a software company, and Conner Peripherals was acquired by Seagate in 1996 and no longer exists as an independent company.

The question asks which video resolution is NOT correct. 640x480 (VGA), 1024x768 (XGA), and 1152x864 are all valid 4:3 aspect ratio display resolutions. However, 800x680 is not a standard video resolution - the common 800x600 resolution (SVGA) or 800x600 variants exist, but 800x680 with its non-standard aspect ratio is incorrect.

The question asks which is NOT a network protocol. HTTP (HyperText Transfer Protocol), RIP (Routing Information Protocol), and PIM (Protocol Independent Multicast) are all legitimate network protocols. PSI is not a standard network protocol - it may refer to various things in different contexts but is not recognized as a networking protocol like the others.

The question asks which formula correctly adds cells A1 through A5 in Excel. =SUM(A1:A5) is the correct syntax - the colon creates a range from A1 to A5 which SUM then totals. =SUM(A1+A5) would only add two cells (A1 and A5), and ADD and TOTAL are not valid Excel functions.

The question asks which is NOT a keyboard layout. QWERTY, Dvorak, and Maltron are all actual keyboard layouts. 'Sholes' refers to Christopher Latham Sholes who invented the QWERTY keyboard, but it's not a keyboard layout itself. Sholes is the inventor's name, not a layout.

The question asks which term is NOT related to programming. 'Subroutine', 'Compile', and 'Null pointer' are all fundamental programming concepts. 'Interleave' is primarily a term from electronics (interleaving memory) or mathematics (interleaving sequences), not a core programming concept. While interleaving can be used in some programming contexts (like data organization), it's not fundamentally a programming term like the others.

Amazon is primarily an e-commerce platform and online marketplace, not a search engine. Google, Zeal (a web directory from the late 1990s), and Hotbot are all search engines designed to index and help users find web content across the internet.