Computer Knowledge

Computer Memory and Storage

2,477 Questions

Computer memory and storage questions test foundational knowledge of hardware, cache mapping, and data transfer mechanisms. Key areas include Direct Memory Access, analog recording, and RAID levels. This section is essential for candidates preparing for banking and government computer proficiency tests.

Cache memory mappingDirect memory accessRAID storage levelsHard disk technologyOptical media storageMemory addresses

Computer Memory and Storage Questions

Multiple choice technology

Net backup components

  1. Master, EMM, media and Client servers

  2. Master, media and Client servers

  3. Master, media, recovery and Client Servers

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NetBackup consists of four main components: Master server (manages backups), EMM server (Enterprise Media Manager, manages media and devices), media server (writes data to storage), and client server (the machine being backed up). Option B is missing EMM. Option C incorrectly includes 'recovery' as a component. Option D would be incorrect because A is the complete, accurate list.

Multiple choice technology

What are the servers required for net backup 6.x

  1. Master

  2. Media

  3. EMM

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

NetBackup 6.x architecture uses three server types: Master server manages backup operations, Media servers handle backup device operations, and EMM (Enterprise Media Manager) stores device configuration and management information. All three are required components in a NetBackup 6.x environment.

Multiple choice technology

NetBackup has been configured with ten storage units. A policy must have the ability to use only storage units A and B for its backup jobs. What can be done to allow the policy to use only these two storage units?

  1. Select Any Available as the policy storage unit

  2. Create a new storage unit and include storage unit A and storage unit B by configuring multi-copies

  3. Create a storage unit group with storage unit A and configure drives in storage unit B using multi-copies

  4. Create a storage unit group that includes storage units A and B and add the group as the policy storage unit
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Storage unit groups allow you to combine multiple storage units and apply them as a single unit to policies. By creating a group with only A and B, the policy will use only those specific storage units. 'Any Available' would use all storage units, and the other options suggest incorrect configurations.

Multiple choice technology

You are configuring the latest model of tape drive and NetBackup requires an updated device mappings package) Where is the device mappings package installed?

  1. on the EMM server only

  2. on all media servers

  3. on the master server

  4. only on the media servers that can see the new tape drives
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Device mappings packages, which contain driver information for specific tape drive models, are installed on the EMM (Enterprise Media Manager) server. This is because the EMM server manages device configuration information for the entire NetBackup environment.

Multiple choice technology

Which statements could be true about tapes that are listed as available? (Choose three)

  1. All of the images are expired and the tape is frozen

  2. All of the images have been manually expired

  3. The tape is new and has never been written to

  4. Some of the images are expired and some are unexpired

  5. Images have met their retention period and are expired
Reveal answer Fill a bubble to check yourself
B,C,E Correct answer
Explanation

Tapes can be available if they are completely new and unwritten (C), if all images have been manually expired (B), or if images have reached their retention period and expired (E). Option A is incorrect because frozen tapes cannot be overwritten even if expired. Option D creates ambiguity - a tape with mixed expired/unexpired images would not be cleanly available for use.

Multiple choice technology

Default net backup pools (choose three)

  1. Scratch pool

  2. Net backup pool

  3. Catalog backup pool

  4. Data store pool

  5. Volume pool
Reveal answer Fill a bubble to check yourself
B,C,D Correct answer
Explanation

NetBackup includes three default pools: the NetBackup pool (general backups), Catalog backup pool (for catalog backups), and Data store pool (for disk storage units). The Scratch pool is for available media and Volume pool is a generic pool type, not specifically a default pool.

Multiple choice technology

You lost all of your NetBackup catalogs and need to recover. Your NetBackup system is up with an empty EMM database) before recovering your catalog, you must _______. (Choose three)

  1. Configure the tape drives

  2. Configure the storage unit

  3. Inventory the library

  4. Move the required media for recovery into the Catalog Backup pool

  5. Create a NBU-Catalog policy

  6. Locate the catalog recovery file
Reveal answer Fill a bubble to check yourself
A,C,F Correct answer
Explanation

Before catalog recovery, you need physical access to tapes (configure drives and inventory the library to locate them) and the catalog recovery file itself (F). Storage unit configuration (B) is done in normal setup, and moving media to Catalog Backup pool (D) is part of the process, not a prerequisite. The NBU-Catalog policy (E) is for ongoing catalog backups.

Multiple choice technology

What must be done before an Advanced Disk pool can be deleted? (Choose two)

  1. All backups to the pool must be expired

  2. All volumes must be removed from the pool

  3. The storage server must be deleted

  4. The storage unit must be deleted

  5. The media server must be taken offline
Reveal answer Fill a bubble to check yourself
A,D Correct answer
Explanation

Before deleting an Advanced Disk pool, all backups must be expired (A) - you can't delete a pool with active backups. Also, the storage unit must be deleted (D) as it references the pool. Removing volumes (B) isn't required since disk pools don't use traditional volumes. Deleting the storage server (C) or taking media server offline (E) are unrelated.

Multiple choice technology

Choose two benefits of Net backup shared storage option[SSO]

  1. Data encryption standard

  2. Dynamic sharing of individual tape drives

  3. Disk based protection and synchronization

  4. Heterogeneous first SAN-ready storage
Reveal answer Fill a bubble to check yourself
B,D Correct answer
Explanation

Storage Snapshot Option (SSO) provides dynamic sharing of individual tape drives (B) - multiple servers can share drives on demand, and heterogeneous SAN-ready storage (D) - supports different OS platforms accessing the same SAN storage. Data encryption (A) is a separate feature. Disk-based protection (C) is not specific to SSO.

Multiple choice technology

Which guidelines should be followed when conducting a NetBackup media server installation? (Choose three)

  1. You should remove any other vendor backup software

  2. At least one tape drive should be available for backup operations

  3. All NetBackup servers should recognize and be recognized by their client systems

  4. You should make certain that you have a server of a supported hardware type running a supported version of an OS

  5. You should remove previous versions of NetBackup in a Windows environment
Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

NetBackup media server installation has specific prerequisites. Option A is correct because other backup software can conflict with NetBackup's drivers and resources. Option C is correct because mutual recognition between servers and clients is essential for backup/restore operations. Option D is correct because NetBackup only supports specific hardware and OS combinations - unsupported configurations fail. Option B is incorrect because disk-based storage units don't require tape drives. Option E is incorrect because NetBackup supports in-place upgrades without removing previous versions.

Multiple choice technology

When installing NetBackup 6.5, which documents should be reviewed before installing the application? (Choose three)

  1. Release Notes

  2. Hardware Compatibility Guide

  3. Hardware Supported List

  4. Operating System Compatibility Guide

  5. Operating System Supported List
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer
Explanation

Before installing NetBackup 6.5, reviewing specific documentation prevents problems. Option A (Release Notes) is correct because it contains known issues, bug fixes, and critical updates. Option B (Hardware Compatibility Guide) is correct because it lists supported hardware and any restrictions. Option D (OS Compatibility Guide) is correct because it specifies supported OS versions and patch levels. Options C and E are likely duplicates or incorrect document titles - NetBackup uses 'Compatibility Guide' terminology, not 'Supported List'. These documents help avoid unsupported configurations that cause installation failures.

Multiple choice technology operating systems

Basic Disk can contain up to..

  1. 4-Primary Partitions

  2. 4-Extended Partitions

  3. 3-Primary and 1-Extended Partitions

  4. 1-Primary and 3-Extended Partitions
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

A basic disk can contain either 4 primary partitions OR 3 primary partitions plus 1 extended partition. The extended partition can then contain multiple logical drives. Both options A and C correctly describe valid basic disk configurations.

Multiple choice technology operating systems

Which File-System is more secure?

  1. Fat-12

  2. Fat-16

  3. Fat-32

  4. NTFS
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

NTFS (New Technology File System) is more secure than FAT file systems because it supports Access Control Lists (ACLs) for fine-grained permissions, file encryption (EFS), disk quotas, file compression, and transactional operations. FAT-12/16/32 have no security features.

Multiple choice technology web technology

Minimum Size of Virtual Memory is..

  1. RAM Size * 1.5

  2. RAM Size * 2

  3. Initial Size * 1.5

  4. Initial Size * 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Virtual memory minimum size is typically set as a multiple of the initial size, not RAM size. Windows convention sets minimum virtual memory size to 2 times the initial size. This allows room for growth while preventing frequent resizing.