C1000-142 exam material & Free C1000-142 AI Tutor

QUESTION: 31

Which statement is true about the Block Storage?

Block Storage stores data in variable sized blocks
Block Storage can be attached to compute instance
Block Storage is only supported for Linux instances
Block Storage is not durable

Answer(s): B

Explanation:

Block storage is used to store data files on Storage Area Networks (SANs) or cloud-based storage environments. It can be attached to compute instance. Block Storage normally mounted onto only one compute node at a time. With block storage, you specify the size of the storage and pay a fee based on the size you provisioned.
When data is moved to block storage, the underlying SAN technology breaks the data into separate, uniform-sized pieces, or blocks. Each block will be given a unique identifier. The SAN will then place those blocks onto the physical storage, distributing them across several disks, often making multiple copies.

When a user or application requests data from a block storage system, the underlying SAN technology reassembles the data blocks and presents the data to the user or application. Block storage decouples data from user environments. It allows data to be spread and duplicated across multiple storage devices, enabling faster retrieval and higher resilience to disk failures.
Benefits:
Provides the lowest latency: Block storage provides the lowest latency for network-based storage versus local disk drives in the server, Provide IOPS up to 48,000 IOPS. High performing: Block storage is highly available and independent of the clients that access it. It remains available and durable regardless of client outages. High redundancy: Network-based block storage is considered to have a higher level of redundancy compared to local disk storage.
Endurance and Performance tiers: Block storage has two tiers from which to choose. Volumes can be created from 20 GB to 12 TB in size.
Eight authorized hosts: Block storage allows eight authorized hosts (can request up to 64) to connect via the multipath IO (MPIO) iSCSI connection.
Snapshots: Block storage allows point-in-time non-disruptive "snapshots," which can be replicated to a cross-regional data center as a duplicate volume.
Custom costs: Block storage allows monthly and hourly billing cycles. Data-at-rest encryption: Block storage offers provider-managed encryption-at-rest. Note: Customer
- managed encryption is not supported by IBM Classic Storage; however, customer-managed encryption keys can be stored.
Use Cases:
As you have learned, block storage has a high performance and is easily updatable. Therefore, many organizations use it for transactional databases. Because of its high performance and reliability, block storage is a common solution for storing emails.
Block storage suitable for low latency workloads where consistently high speeds required.

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QUESTION: 32

Which statement is true about IBM File Storage?

It is a local file system for a compute instance
It is supported by Linux operating systems only
It is supported by Windows operating system only
It organizes files in a hierarchy of named directories

Answer(s): D

Explanation:

File Storage associated with Network Attached Storage (NAS) technology. File Storage organizes files in a hierarchy of named directories.
The ability for File Storage to be mounted to multiple compute nodes at a time make it an ideal solution for common storage requirements.

- Offer volume size from 20 GB to 12 TB
- Provide encryption for data at rest
- Provide IOPS up to 48,000 IOPS.

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QUESTION: 33

Which IBM Cloud service provides virtual servers and bare metal servers with SAN-like iSCSI storage?

IBM® File Storage Service
IBM® Block Storage Service
IBM® Object Storage Service
IBM® Backup Storage Service

Answer(s): B

Explanation:

Block storage is used to store data files on Storage Area Networks (SANs) or cloud-based storage environments. It can be attached to compute instance. Block Storage normally mounted onto only one compute node at a time. With block storage, you specify the size of the storage and pay a fee based on the size you provisioned.
When data is moved to block storage, the underlying SAN technology breaks the data into separate, uniform-sized pieces, or blocks. Each block will be given a unique identifier. The SAN will then place those blocks onto the physical storage, distributing them across several disks, often making multiple copies.
When a user or application requests data from a block storage system, the underlying SAN technology reassembles the data blocks and presents the data to the user or application. Block storage decouples data from user environments. It allows data to be spread and duplicated across multiple storage devices, enabling faster retrieval and higher resilience to disk failures.
Benefits:
Provides the lowest latency: Block storage provides the lowest latency for network-based storage versus local disk drives in the server, Provide IOPS up to 48,000 IOPS. High performing: Block storage is highly available and independent of the clients that access it. It remains available and durable regardless of client outages. High redundancy: Network-based block storage is considered to have a higher level of redundancy compared to local disk storage.
Endurance and Performance tiers: Block storage has two tiers from which to choose. Volumes can be created from 20 GB to 12 TB in size.
Eight authorized hosts: Block storage allows eight authorized hosts (can request up to 64) to connect via the multipath IO (MPIO) iSCSI connection.
Snapshots: Block storage allows point-in-time non-disruptive "snapshots," which can be replicated to a cross-regional data center as a duplicate volume.
Custom costs: Block storage allows monthly and hourly billing cycles. Data-at-rest encryption: Block storage offers provider-managed encryption-at-rest. Note: Customer
- managed encryption is not supported by IBM Classic Storage; however, customer-managed encryption keys can be stored.
Use Cases :
As you have learned, block storage has a high performance and is easily updatable. Therefore, many organizations use it for transactional databases.

Because of its high performance and reliability, block storage is a common solution for storing emails.
Block storage suitable for low latency workloads where consistently high speeds required.

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QUESTION: 34

Which of the following statements are correct for Object storage? (Select Max)

It can store a finite amount of unstructured data
It is tied to a specific compute instance
It enables you to store or retrieve data directly from the Internet
It is supported by Linux operating systems only

Answer(s): A

Explanation:

Object Storage enable you to store and access unstructured data anywhere in the world with a selfservice portal backed by RESTful APIs.
Object Storage supports exponential data growth and cloud-native workloads with built-in highspeed file transfer capabilities, cross-region offerings and integrated services.
Use cases:
Backup and recovery, Data archiving, Cloud-native application, AI and big data analytics.

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QUESTION: 35

Which of the following are the benefit of the Hybrid Cloud deployment model?(Select Two)

Greater visibility into security and access control
Full control over hardware and software choices
Security and regulatory compliance
Resource optimization, and cost savings
Greater elasticity and scalability

Answer(s): B,C

Explanation:

Hybrid Cloud combines public cloud, private cloud and on-premises infrastructure to create a single, flexible, cost-optimal IT infrastructure. Hybrid Cloud model best suits where security and regulatory compliance required.
Use Cases:
Security and regulatory compliance: We can reserve sensitive data and highly regulated workloads behind-the firewall in private cloud and can use more economical public cloud resources for less-sensitive workloads and data. Resource optimization, and cost savings: We can manage predictable capacity workload on private cloud and can migrate unpredictable workloads to public cloud to scale up quickly and automatically.
Cloud Scaling:
A business has on-premise infrastructure that can handle a certain amount of user load. The hybrid allows them to scale up in response to a larger load then automatically de-provision resources when they no longer need them. Multicloud: Composite cloud are applications that are spread across multiple cloud environments. If a business has on-premise architecture that allows them to run three components of their app but the system gets bogged down in busier times, such as holidays, they take advantage of the multicloud architecture by composing their application across multiple cloud environments.
Incorrect Answers:
- Full control over hardware and software choices:
In Private cloud, customer have full control over IT infrastructure, They are free to purchase the hardware and software as per their choice. They can customize(configure) servers and software as needed.
- Greater visibility into security and access control, In Private Cloud, all workloads run behind the customers' own firewall.
- Greater elasticity and scalability: With public cloud, a customer can add capacity in response to unexpended surges in traffic, without purchasing and installing new hardware. [Exam Tips]:
You can expect few questions from here in your exam, so before appearing for exam, you should be aware of use cases of private, public and hybrid cloud.

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json { "Effect": "Deny", "NotAction": [ "iam:*", "route53:*", "cloudfront:*", "support:*" ], "Resource": "*", "Condition": { "StringNotEquals": { "aws:RequestedRegion": "eu-west-1" } } }

IBM C1000-142 Exam Prep IBM Cloud Advocate v2 (Page 8 )

QUESTION: 31

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QUESTION: 32

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QUESTION: 33

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QUESTION: 34

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QUESTION: 35

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IBM C1000-142 Exam Prep
IBM Cloud Advocate v2 (Page 8 )