Computer Memory and Storage

Both malloc and new can allocate memory for any type, not just arrays or objects. In C++, new automatically initializes objects by invoking their constructors, whereas malloc simply allocates raw bytes of memory without performing initialization.

The LINKAGE SECTION in a COBOL program is used specifically in called (sub) programs to define data items that will receive parameters passed from the calling program. It 'links' or maps the calling program's data to the called program's working storage, enabling parameter passing between programs.

Android does not keep all applications running indefinitely. The system actively manages memory by killing background processes when resources are needed for foreground activities. Applications can be terminated even if they're not doing anything wrong - this is normal Android behavior.

DC (Define Constant) is used to allocate memory and initialize it with a constant value in assembler. DS (Define Storage) only reserves memory space without initialization. Therefore DC is the instruction that both allocates and initializes memory.

ROM (Read-Only Memory) is permanent memory built into computers because it retains data without power and cannot be easily modified. RAM is volatile temporary memory that loses data when power is off, CPU is the processor, and CD-ROM is removable media. The 'permanent' and 'built into your computer' descriptions point directly to ROM chips containing firmware.

Standard CDs store approximately 650MB of data, though newer capacities reach 700MB. 1.4MB is floppy disk capacity, 10MB is unrealistically low for optical media, and 150MB doesn't match standard CD specifications. The 650MB figure is the widely accepted standard capacity for traditional compact discs.

The correct answer is A because BlackBerry application storage refers to the persistent flash memory and on-board memory where applications and data are stored. Option B ('Storage memory') is too vague. Option C ('Main memory') typically refers to RAM, which is volatile. Option D ('Partition storage') is not the standard terminology used in BlackBerry documentation.

Objective-C traditionally uses reference counting (manual memory management through retain/release/autorelease). While some versions of Objective-C on Mac OS X offered optional garbage collection, it was never available on iOS and has been deprecated. Reference counting (now largely automated through ARC) is the primary technique.

DDR stands for Double Data Rate, referring to how the memory transfers data on both the rising and falling edges of the clock signal, effectively doubling the data transfer rate compared to single data rate (SDR) memory. It is not related to 'Digital', 'Differential', or 'Dynamic' in this context.

SAN LUNs (Logical Unit Numbers) function as logical drives presented to servers, can be shared across multiple servers for clustering or load balancing, and represent soft partitions (logical subdivisions) of physical storage. Hard partitions refer to physical separation, not LUN functionality.

MBR (Master Boot Record) and GPT (GUID Partition Table) are the two primary partition styles used to organize layout on storage drives. SATA and PATA refer to physical hardware interface standards and connection types, not to storage device partitioning schemes.

Common hard drive interfaces include SATA (Serial ATA) and PATA (Parallel ATA) for internal drives. FireWire and iLink (IEEE 1394) are external interfaces used with external hard drives. PRIMARY is not an interface type - it refers to a primary partition. NT is not a valid hard disk interface.

A Virtual Tape Library (VTL) emulates physical tape drives using disk storage, presenting tape-like media to backup software while using hard disks for actual data storage. It's commonly used for backup and recovery, providing faster access than physical tape while maintaining compatibility with tape-based backup workflows.

The question describes a system comprising many pieces of hard disks that requires its own management system - this refers to a Storage Box which contains multiple disks and management software. A Storage Area Network (SAN) provides network-level storage access, Storage Controller is a component, and NAS is network-attached storage but doesn't necessarily contain 'many pieces of hard disks' requiring its own management system in the same way.

RAID configurations, such as RAID 5 or RAID 6, support data redundancy. If a drive fails, the SAN system automatically uses parity data or mirror copies from the remaining active drives to rebuild the lost information onto a configured hot spare disk, avoiding any data loss.