Computer Hardware MCQ Questions & Answers | Computer Science

The 34-pin connection on an I/O card is specifically designed for connecting floppy drives.

Floppy drives were common in older computer systems and used a 34-pin ribbon cable to connect to the I/O card.

This type of connection is distinct from other types of drives:

SCSI drives typically use 50-pin or 68-pin connectors.

IDE drives use a 40-pin connector.

Zip drives can use different connectors such as 25-pin or 50-pin SCSI connectors depending on the model.

Therefore, the 34-pin connection on an I/O card is specifically associated with floppy drives, making Option A the correct answer.

The terms "red book", "yellow book", and "orange book" are used to refer to various CD-ROM standards:

Red Book: Defines the standard for audio CDs, including the format for storing audio tracks and subcode data.
Yellow Book: Defines the standard for CD-ROMs used for storing data, including file systems like ISO 9660.
Orange Book: Defines the standards for recordable and rewritable CD media, such as CD-R and CD-RW.

These standards are crucial in determining how data and audio are formatted and stored on CD-ROMs, making Option D the correct answer.

On the 16-bit ISA bus, IRQ2 is cascaded or elevated to IRQ9 as a higher-level interrupt.

This means that devices that originally used IRQ2 on the ISA bus would use IRQ9 instead to avoid conflicts and manage interrupts effectively.

The IRQ levels on the ISA bus are cascaded in this manner to accommodate more devices and prevent interrupt conflicts.

Therefore, on the 16-bit ISA bus, IRQ2 is elevated to IRQ9, making Option A the correct answer.

Beep codes are used by computers during the boot process to indicate various hardware errors, including system board or power supply failures.

Steady short beep: This can indicate various issues, including motherboard or power supply problems.
No beep: Typically indicates a power supply or motherboard issue, as the system may not be starting up properly.
One long continuous beep tone: Often indicates a power supply or motherboard failure, as the system cannot initialize properly.
Steady long beeps: Can indicate critical motherboard or power supply failures that prevent the system from booting.

Therefore, all of the provided beep codes (steady short beep, no beep, one long continuous beep tone, and steady long beeps) could indicate a system board or power supply failure, making Option E the correct answer.

Step 1: Low-level formatting

A low-level format (also known as a physical format) is the process that prepares the physical surface of a hard disk to store data. It divides the disk into tracks and sectors that the drive controller uses to read and write information. This process is usually done at the factory, but in older systems, users could perform it manually to repair or reinitialize the disk.

After a low-level format, the hard disk is physically ready but cannot yet store files or run an operating system because it lacks logical structures like partitions or file systems.

Step 2: Partitioning the hard disk

The next logical step after low-level formatting is to partition the hard disk. Partitioning divides the disk into one or more logical sections called partitions. Each partition acts as an independent logical drive (for example, C:, D:, etc.).

During this step, the partition table is created in the Master Boot Record (MBR) or GUID Partition Table (GPT), which allows the computer to identify and manage each section of the disk.

Without partitioning, the operating system cannot determine where to store files or how to organize the data structure on the disk.

Step 3: High-level formatting (Formatting the partition)

Once partitions are created, each one must be high-level formatted (also called logical formatting). This step is sometimes described in older terminology as "Format DOS partition" (Option A).

High-level formatting creates the file system (such as FAT32, NTFS, ext4, etc.) within a partition, enabling the operating system to store and retrieve files effectively.

Step 4: Installing the operating system

After high-level formatting, the system is finally ready to install the operating system (Option B). The OS setup program uses the formatted partition(s) to copy system files and configure the boot structure.

Conclusion

The correct chronological sequence of steps is:

Low-level format → Partition hard disk → Format DOS partition → Install operating system

Therefore, immediately after performing a low-level format, the next step is to partition the hard disk.

Hence, the correct answer is Option D: Partition hard disk.