GK (Computer 1)

Gateways allow networks to access resources of other systems, including mainframes. They translate between different protocols and architectures. Routers direct traffic (not primarily for signal strengthening), repeaters amplify signals (not for LAN connections), and bridges connect network segments (not for optimizing message paths). Gateways enable interoperability between dissimilar networks and systems like mainframes.

Static encryption keys make networks insecure because they never change, giving attackers unlimited time to crack them through cryptanalysis. Encryption (option A) actually makes networks MORE secure by protecting data in transit. Network interface cards (option B) are simply hardware components for network connectivity, not security features.

Broadcast and point-to-point are standard, well-documented transmission technologies used in networking. 'Narrowcast linking' is not a recognized transmission technology in networking literature or practice.

The compaq portable, the first portable compatible computer of IBM.

Firewalls are security devices that monitor and control network traffic based on predetermined rules, acting as barriers between trusted internal networks and untrusted external networks. They protect against unauthorized access and threats. Authentication (option B) is handled by separate authentication servers, and data transmission (option C) is what firewalls protect, not their purpose.

A complete PC system requires both hardware components (CPU, memory, storage, motherboard) and software (operating system, drivers, applications) to function. Neither hardware alone nor software alone makes an operational computer. Input/output (option B) and specific peripherals like keyboards/printers (option C) are subsets of hardware.

Computerization aims to eliminate manual, paper-based record-keeping in favor of digital systems. Focusing on manual records (option C) directly contradicts the purpose of computerization. Effective customer systems (option A) and bank office integration (option B) are essential components of successful digital banking transformation.

Processing controls refer to validation checks, edit routines, and reconciliations performed during data processing (e.g., range checks, format validation, batch totals). Authorization (option A), access control (option B), and before/after image reporting (option C) are examples of access controls or audit controls, not processing controls per se.

Client-server architecture is fundamental to network multimedia applications where content servers deliver audio/video to multiple client devices simultaneously. Interactive multimedia (option A) can run standalone on a single machine without requiring a client-server model. MPEG (option C) is a video compression format standard, not a use case or application type.

Library management software in software development refers to version control systems that track all changes made to programs over time and maintain version numbering. This enables developers to collaborate, revert to previous versions if needed, and understand the evolution of the codebase.

Floppy disks are random-access storage devices that allow direct access to any sector without reading sequentially. They serve as portable storage media and were historically widely used for transferring data between computers. Unlike sequential tape storage, floppies support random access patterns.

Correct answer is (1). 

Third generation computers (1965-1971) used integrated circuits (ICs) instead of discrete transistors, making them smaller, faster, more reliable, and less expensive. This era saw the emergence of minicomputers and time-sharing systems.

RAM is volatile memory, meaning it requires constant electrical power to maintain stored data. When power fails, all data in RAM is lost permanently. Option B is incorrect because PC/XT used the 8088 processor, not 80186.

File servers, DNS servers, and Print servers are all standard server types in network environments. Therefore, option D ('All are server types') is correct when asked which is NOT 'a' server feature - meaning all listed options are valid server types.

A Remote Concentrator aggregates data from multiple low-speed devices (like terminals) and transmits it over high-speed communication lines to different locations, optimizing bandwidth and reducing transmission costs.

A grid supercomputer is created by networking many small computers together to work in parallel, combining their computational power. ASCI White was a specific supercomputer, LAN is local area network, and 'Network super' is not a standard term.

OMR (Optical Mark Recognition) technology is used to read marked choices on answer sheets in entrance tests. It detects pencil marks by reflecting light, enabling fast, automated scoring of multiple-choice answer sheets.

File transfer is a function of the Application Layer (Layer 7) in the OSI model. Protocols like FTP operate at this layer to enable file transfer between systems, making 'the function of the Application Layer' the correct interpretation.