Emc Avamars Deduplication Technology Quiz

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Emc Avamars Deduplication Technology Quiz - Quiz


Questions and Answers
  • 1. 

    What is a benefit of EMC Avamars deduplication technology?

    • A.

      Uses existing networks for backup

    • B.

      Deploys in a wide-variety of client OS

    • C.

      Provides a scalable server architecture

    • D.

      Reduces the amount of backup data

    Correct Answer
    D. Reduces the amount of backup data
    Explanation
    EMC Avamar's deduplication technology reduces the amount of backup data. Deduplication eliminates redundant data by identifying and storing only unique data blocks. This results in significant storage savings, as it reduces the amount of data that needs to be backed up. By eliminating duplicate data, Avamar's deduplication technology optimizes storage efficiency and reduces backup windows, allowing for faster and more efficient backups.

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  • 2. 

    Which protocol is used to make the backup connection between an EMC Avamar client and the EMC Avamar server?

    • A.

      TCP/IP

    • B.

      HTTP

    • C.

      UDP

    • D.

      FTP

    Correct Answer
    A. TCP/IP
    Explanation
    TCP/IP is the correct answer because it is the protocol used to establish a reliable and secure connection between the EMC Avamar client and server for backup purposes. TCP/IP is a widely used protocol suite that provides a set of rules for data transmission over a network, ensuring that the data is delivered accurately and in the correct order. This protocol is essential for backing up data efficiently and effectively.

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  • 3. 

    When performing an Avamar root-to-root replication, which replication topologies are available?

    • A.

      Many-to-one

    • B.

      Many-to-Many

    • C.

      One-to-Many

    • D.

      One-to-One

    Correct Answer
    D. One-to-One
    Explanation
    In an Avamar root-to-root replication, the available replication topology is one-to-one. This means that data is replicated from one Avamar root server to another Avamar root server in a one-to-one relationship. Each root server acts as a source and target for replication, ensuring that data is replicated between them in a one-to-one manner. This topology allows for efficient and reliable replication of data between Avamar root servers.

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  • 4. 

    Which utility is used to configure initial networking on a Gen4S utility node?

    • A.

      Yast

    • B.

      Ifconfig

    • C.

      Ipconfig

    • D.

      Netconfig

    Correct Answer
    A. Yast
    Explanation
    The correct answer is yast. Yast is a utility used to configure initial networking on a Gen4S utility node. It allows users to easily set up and manage network settings such as IP addresses, DNS servers, and network interfaces. It provides a graphical interface that simplifies the process of configuring networking, making it a convenient tool for setting up initial networking on a Gen4S utility node.

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  • 5. 

    A storage administrator wants to register and activate many new clients at the same time to an EMC Avamar server. What should the administrator use?

    • A.

      Batch client load

    • B.

      Client-side activation

    • C.

      Server-side registration

    • D.

      Client Manager

    Correct Answer
    D. Client Manager
    Explanation
    All of these answers are correct according book

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  • 6. 

    At which percentage of the user capacity does EMC Avamar transition to a read-only state?

    • A.

      85

    • B.

      90

    • C.

      96

    • D.

      100

    Correct Answer
    D. 100
    Explanation
    EMC Avamar transitions to a read-only state when it reaches 100% of its user capacity. This means that the Avamar system can no longer accept new data and can only be accessed for reading or retrieving existing data. This transition occurs to prevent any further data loss or corruption when the system is already at its maximum capacity.

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  • 7. 

    What must be running on an EMC Avamar client before scheduled backups can start?

    • A.

      Avagent only

    • B.

      Avtar only

    • C.

      Avagent and avscc

    • D.

      Avscc and avtar

    Correct Answer
    A. Avagent only
    Explanation
    Before scheduled backups can start on an EMC Avamar client, the avagent must be running. The avagent is responsible for initiating and managing the backup process. The avtar and avscc are not required for the scheduled backups to start.

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  • 8. 

    What is the goal of EMC Avamar capacity management?

    • A.

      To prevent going below the low-water mark

    • B.

      To achieve steady-state capacity utilization

    • C.

      To store as much data as possible

    • D.

      To retain backups for as long as possible

    Correct Answer
    B. To achieve steady-state capacity utilization
    Explanation
    The goal of EMC Avamar capacity management is to achieve steady-state capacity utilization. This means that the system aims to maintain a consistent level of capacity usage over time, ensuring that resources are efficiently allocated and not wasted. By achieving steady-state capacity utilization, organizations can optimize their storage infrastructure and avoid both underutilization and overutilization of resources. This helps to ensure that the system is operating at an optimal level, maximizing efficiency and minimizing costs.

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  • 9. 

    In an EMC Avamar backup, what happens during the sticky-byte factoring process?

    • A.

      All chunks are compressed

    • B.

      Variable-length chunks are hashed

    • C.

      Changed files are divided into chunks

    • D.

      Previously backed up files are skipped

    Correct Answer
    C. Changed files are divided into chunks
    Explanation
    During the sticky-byte factoring process in an EMC Avamar backup, the changed files are divided into chunks. This means that the backup system identifies the parts of the files that have been modified since the last backup and breaks them down into smaller, manageable pieces. This allows for more efficient storage and retrieval of the backup data, as only the modified chunks need to be transferred or stored, rather than the entire file.

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  • 10. 

    What must be configured and enabled to automatically run backups on a regular basis?

    • A.

      Enterprise Manager

    • B.

      Replication

    • C.

      Notification schedule

    • D.

      Group

    Correct Answer
    D. Group
    Explanation
    To automatically run backups on a regular basis, a "Group" must be configured and enabled. A group allows for the organization and management of resources and tasks, including backups. By configuring and enabling a group, backup processes can be scheduled and executed automatically according to the defined parameters and frequency. This ensures that backups are consistently performed without manual intervention, improving data protection and disaster recovery capabilities.

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  • 11. 

    You want to create a user account with permissions to perform backups only for a specific group of clients. At which level in the EMC Avamar hierarchy would you create the user account?

    • A.

      Client

    • B.

      Replication

    • C.

      Domain

    • D.

      Root

    Correct Answer
    C. Domain
    Explanation
    In EMC Avamar, the user account with permissions to perform backups only for a specific group of clients would be created at the domain level. The domain is the highest level in the Avamar hierarchy and allows for the management and organization of multiple clients and groups. By creating the user account at the domain level, you can ensure that the permissions are applied to the entire domain and all the clients within it, rather than just a single client or group.

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  • 12. 

    What provides centralized administration for the EMC Avamar server and runs the server-side processes used by Avamar Administrator?

    • A.

      MCS

    • B.

      Avtar

    • C.

      Avagent

    • D.

      Gsan

    Correct Answer
    A. MCS
    Explanation
    MCS stands for Management Console Server, which provides centralized administration for the EMC Avamar server. It is responsible for running the server-side processes used by Avamar Administrator. This means that MCS allows administrators to manage and control the Avamar server, as well as perform various tasks and configurations through the Avamar Administrator interface.

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  • 13. 

    What does an EMC Avamar utility node provide?

    • A.

      Client backup processing

    • B.

      Internal server processes and services

    • C.

      Backup storage

    • D.

      Backup functionality for NAS devices

    Correct Answer
    B. Internal server processes and services
    Explanation
    An EMC Avamar utility node provides internal server processes and services. This means that it handles various tasks and functions within the Avamar system, such as managing backups, scheduling processes, and providing services to other components of the system. It does not directly handle client backup processing or backup storage, although it may play a role in facilitating these functions. Additionally, while Avamar does provide backup functionality for NAS devices, this is not the specific role of the utility node.

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  • 14. 

    Which user data is stored on an Avamar NDMP Accelerator node?

    • A.

      NAS performance statistics

    • B.

      No user data

    • C.

      Backup metadata

    • D.

      NAS backup data

    Correct Answer
    B. No user data
    Explanation
    The Avamar NDMP Accelerator node does not store any user data. It is responsible for storing backup metadata, NAS backup data, and NAS performance statistics, but it does not store any user data.

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  • 15. 

    Which EMC Avamar interface provides a system-wide view of the health of multiple Avamar servers?

    • A.

      Avamar Client

    • B.

      Avamar Administrator

    • C.

      Avtar

    • D.

      Backup and Recovery Manager (BRM) as it is replacing Enterprise Manager

    Correct Answer
    B. Avamar Administrator
    Explanation
    The Avamar Administrator interface provides a system-wide view of the health of multiple Avamar servers. It allows administrators to monitor and manage the Avamar environment, including backup and recovery operations, system status, and performance monitoring. This interface provides a centralized view, making it easier to identify any issues or bottlenecks across multiple Avamar servers.

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  • 16. 

    A company has deployed EMC Avamar. In addition, they have implemented desktop/laptop (DT/LT) to enable end users to manage their own restores. Based on the underlying DT/LT security, what is the end user prevented from doing?

    • A.

      Restoring any file not owned by the end user

    • B.

      Restoring any file owned by the end user

    • C.

      Restoring files to an alternate directory

    • D.

      Restoring multiple files at the same time

    Correct Answer
    A. Restoring any file not owned by the end user
    Explanation
    The end user is prevented from restoring any file not owned by them. This means that they can only restore files that they have ownership of, and cannot access or restore files belonging to other users.

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  • 17. 

    Whta is the minimum number of EMC Avamar active storage nodes required to create a valid RAIN configuration?

    • A.

      2

    • B.

      3

    • C.

      4

    • D.

      5

    Correct Answer
    B. 3
    Explanation
    A valid RAIN (Redundant Array of Independent Nodes) configuration requires a minimum of 3 EMC Avamar active storage nodes. RAIN is a data storage architecture that distributes data across multiple nodes for redundancy and improved performance. Having at least 3 nodes ensures that data can be distributed and replicated across multiple nodes, providing fault tolerance and data availability in case of a node failure.

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  • 18. 

    What is the Avamar process that runs as a application on each Avamar storage node and is the only way to access data on a storage node?

    • A.

      EMS

    • B.

      MCS

    • C.

      Gsan

    • D.

      Avagent

    Correct Answer
    C. Gsan
    Explanation
    The Avamar process that runs as an application on each Avamar storage node and is the only way to access data on a storage node is called gsan.

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  • 19. 

    When installing an Avamar server, where must the Avamar installation package be copied in order to be processed by Avamar Installation Manager?

    • A.

      /usr/local/avamar/src

    • B.

      /usr/local/avamar/avi/

    • C.

      /data01/avamar/repo/packages

    • D.

      /data01/avamar/src

    Correct Answer
    A. /usr/local/avamar/src
    Explanation
    The Avamar installation package must be copied to the /usr/local/avamar/src directory in order to be processed by Avamar Installation Manager.

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  • 20. 

    What is a characteristic of EMC Avamar garbage collection?

    • A.

      Runs twice daily

    • B.

      Will not start if any backups are running

    • C.

      Places the Avamar system in read/write mode

    • D.

      Runs during the maintenance window

    Correct Answer
    D. Runs during the maintenance window
    Explanation
    The characteristic of EMC Avamar garbage collection is that it runs during the maintenance window. This means that it is scheduled to run at a specific time when system maintenance tasks can be performed without disrupting normal operations. Running during the maintenance window ensures that the garbage collection process does not interfere with any backups or other critical tasks that may be running on the Avamar system.

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  • 21. 

    A company has its EMC Avamar server configured to replicate to a target Avamar server using normal replication. The source Avamar server has become unavailable. The company wants to restore data from the target server to the original client.What describes the restore process?

    • A.

      The client is already activated to the target server The client will be automatically selected as a destination

    • B.

      Activate the client to the target server The client is automatically designated as a destination

    • C.

      Activate the client to the target server The client must be selected as the destination for the restore

    • D.

      The client is already activated to the target server The client must be selected as the destination for the restore

    Correct Answer
    C. Activate the client to the target server The client must be selected as the destination for the restore
    Explanation
    In order to restore data from the target server to the original client, the client must first be activated on the target server. Once the client is activated on the target server, it can then be selected as the destination for the restore process. Therefore, the correct answer is to activate the client to the target server and then select it as the destination for the restore.

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  • 22. 

    What is a characteristic of EMC Avamar VMware Image Level backups?

    • A.

      Image proxy must be located on a different ESX server from the ESX server hosting the target machines

    • B.

      Avamar client software is installed on each VMware virtual machine

    • C.

      File-level restores are supported for Windows and Linux

    • D.

      A vCenter server is not required

    Correct Answer
    C. File-level restores are supported for Windows and Linux
    Explanation
    The characteristic of EMC Avamar VMware Image Level backups is that file-level restores are supported for Windows and Linux. This means that users can restore individual files or folders from the backup instead of restoring the entire virtual machine.

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  • 23. 

    A customer has a 1X4+1 Gen4S 7.8 TB grid and wants to add an additional 1.3 TB of storage space. Which node type should be added to meet their requirement?

    • A.

      Gen3 2.0 TB

    • B.

      Gen3 3.3 TB

    • C.

      Gen4S 1.3 TB

    • D.

      Gen4S 7.8 TB

    Correct Answer
    D. Gen4S 7.8 TB
    Explanation
    To meet the customer's requirement of adding an additional 1.3 TB of storage space, the node type that should be added is Gen4S 7.8 TB. This node type has the capacity to provide the desired storage space, as it offers 7.8 TB of storage.

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  • 24. 

    Which port is used for EMC Avamar Administrator server communications with Avamar clients?

    • A.

      27000

    • B.

      28001

    • C.

      28002

    • D.

      29000

    Correct Answer
    C. 28002
    Explanation
    The correct answer is 28002. This port is used for EMC Avamar Administrator server communications with Avamar clients.

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  • 25. 

    Which backup process step breaks data into variable sized chunks?

    • A.

      Hashing

    • B.

      Data object storage

    • C.

      Sticky-byte factoring

    • D.

      Compression

    Correct Answer
    C. Sticky-byte factoring
    Explanation
    Sticky-byte factoring is the backup process step that breaks data into variable sized chunks. This technique involves dividing the data into smaller, variable-sized chunks based on the content of the data rather than a fixed size. This allows for more efficient storage and retrieval of the data during the backup process.

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  • 26. 

    When setting up an EMC Avamar NDMP  backup of an EMC VNX storage system, where is the Avamar client installed?

    • A.

      NAS device

    • B.

      Avamar storage node

    • C.

      Avamar NDMP accelerator

    • D.

      Avamar utility node

    Correct Answer
    C. Avamar NDMP accelerator
    Explanation
    The Avamar NDMP accelerator is the correct answer because it is the component responsible for handling the backup and restore operations for the EMC VNX storage system. The Avamar client is installed on the NDMP accelerator to facilitate the communication and data transfer between the storage system and the Avamar backup software. This setup allows for efficient and optimized backup and restore processes for the EMC VNX storage system.

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  • 27. 

    What must be done before a client can use the EMC Avamar system to back up data?

    • A.

      Avamar Administrator must be installed on the client

    • B.

      Client must be activated with the Avamar server

    • C.

      After client software installation, avagent must be restarted

    • D.

      Client must be added to the root domain

    Correct Answer
    B. Client must be activated with the Avamar server
    Explanation
    Before a client can use the EMC Avamar system to back up data, it must be activated with the Avamar server. This activation process ensures that the client is properly registered and authenticated with the server, allowing it to establish a connection and communicate with the Avamar system for backup purposes. Without this activation, the client would not be recognized by the server and therefore unable to utilize the Avamar system for data backup.

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  • 28. 

    HFS check is running on an EMC Avamar server. In addition to checkpoint, which other activities can start?

    • A.

      Garbage collection and client-initiated backups

    • B.

      Garbage collection and server-initiated backups

    • C.

      Replication and a limited number of backups

    • D.

      Replication and nine backups per data node

    Correct Answer
    B. Garbage collection and server-initiated backups
    Explanation
    During an HFS check on an EMC Avamar server, two activities that can start in addition to checkpoint are garbage collection and server-initiated backups. Garbage collection refers to the process of removing unnecessary or expired data from the storage system, freeing up space and improving overall system performance. Server-initiated backups are backups that are initiated by the server itself, typically scheduled at regular intervals to ensure data protection and recovery. These activities are important for maintaining the efficiency and reliability of the Avamar server.

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  • 29. 

    How many checkpoints are automatically created each day by Avamar server?

    • A.

      3

    • B.

      1

    • C.

      2

    • D.

      0

    Correct Answer
    C. 2
    Explanation
    Avamar server automatically creates 2 checkpoints each day. This suggests that the server regularly saves and stores data at two different points in time, providing a backup and recovery mechanism. These checkpoints serve as snapshots of the data, ensuring that in case of any data loss or system failure, the server can revert to a previous state and restore the information.

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  • 30. 

    A company has purchased an EMC Avamar 1X10+1 grid. What is the maximum number of clients that can be simultaneously backed up?

    • A.

      270

    • B.

      719

    • C.

      720

    • D.

      792

    Correct Answer
    C. 720
    Explanation
    The EMC Avamar 1X10+1 grid has a maximum capacity of 720 clients that can be simultaneously backed up. This means that the company can back up data from up to 720 different clients at the same time using this system.

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  • 31. 

    Which Avamar process frees up capacity on the Avamar server?

    • A.

      Replication

    • B.

      HFS check

    • C.

      Checkpoint

    • D.

      Garbage collection

    Correct Answer
    D. Garbage collection
    Explanation
    Garbage collection is the Avamar process that frees up capacity on the Avamar server. During the garbage collection process, Avamar identifies and removes any unused or expired data from the server, reclaiming storage space. This helps optimize the server's capacity and ensures efficient utilization of resources. Replication, HFS check, and checkpoint processes serve different purposes and do not directly contribute to freeing up capacity on the Avamar server.

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  • 32. 

    Which type of hash is created from a compressed data chunk?

    • A.

      Composite

    • B.

      Atomic

    • C.

      Metadata

    • D.

      Root

    Correct Answer
    B. Atomic
    Explanation
    An atomic hash is created from a compressed data chunk. An atomic hash is a unique identifier that is generated by applying a hash function to the compressed data. This hash serves as a digital fingerprint for the data chunk, allowing for efficient storage, retrieval, and verification of the data's integrity. The use of atomic hashes is common in various applications, such as data deduplication, content-addressable storage, and cryptographic protocols.

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  • 33. 

    Which fault tolerance level is used to provide disaster recovery protection for an EMC Avamar server?

    • A.

      Checkpoints

    • B.

      RAIN

    • C.

      RAID

    • D.

      Replication

    Correct Answer
    D. Replication
    Explanation
    Replication is the fault tolerance level used to provide disaster recovery protection for an EMC Avamar server. Replication involves creating an identical copy of the data on another server or storage device. This ensures that in the event of a failure or disaster, the replicated data can be used to restore the system and minimize downtime. Replication is a crucial aspect of disaster recovery planning as it allows for the quick and efficient recovery of data and services.

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  • 34. 

    What is the default percentage of the file system storage space is dedicated to user capacity on EMC Avamar server?

    • A.

      50

    • B.

      65

    • C.

      75

    • D.

      80

    Correct Answer
    B. 65
    Explanation
    The default percentage of the file system storage space dedicated to user capacity on EMC Avamar server is 65%. This means that 65% of the total storage space is allocated for user data and files.

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  • 35. 

    In EMC Avamar, what are client cache files used for?

    • A.

      To determine if data has been backed up before

    • B.

      To enable quick restores of backup data

    • C.

      To track the amount of backup data for each client

    • D.

      To store backup data in memory before sending it to the Avamar server

    Correct Answer
    A. To determine if data has been backed up before
    Explanation
    Client cache files in EMC Avamar are used to determine if data has been backed up before. These files store information about the data that has already been backed up, allowing the system to quickly check if a file or block of data has already been backed up. This helps to optimize the backup process by reducing the amount of data that needs to be transmitted and stored, ultimately improving efficiency and reducing storage requirements.

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  • 36. 

    When using Client Manager, what is required in order to query a directory service to generate a list of clients?

    • A.

      Clients are installed with desktop/laptop

    • B.

      LDAP authentication is configured

    • C.

      SAN path

    • D.

      Directory server is configured in Enterprise Manager

    Correct Answer
    B. LDAP authentication is configured
    Explanation
    To query a directory service and generate a list of clients using Client Manager, LDAP authentication needs to be configured. LDAP (Lightweight Directory Access Protocol) is a protocol used to access and manage directory information. By configuring LDAP authentication, the Client Manager can authenticate and communicate with the directory service to retrieve client information. This allows for the generation of a list of clients installed with desktop/laptop devices. The other options mentioned (clients being installed with desktop/laptop, SAN path, and configuring a directory server in Enterprise Manager) are not directly related to querying a directory service for client information.

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  • Current Version
  • Mar 12, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 14, 2017
    Quiz Created by
    Catherine Halcomb
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