Which of the following is the preferred type of encryption used in SaaS platforms?

Which of the following is the preferred type of encryption used in SaaS platforms?

• Media level
• Database level
• Application level
• HSM level 

EXPLANATION

In a SaaS environment, application-level encryption is preferred because the data is encrypted by the application before being stored in the database or file system. The advantage is that it protects the data from the user all the way to storage. HSM Level is incorrect because an HSM solution is mainly found in private data centers that manage and offload cryptography with dedicated hardware appliances. Media Level is incorrect because encryption of a complete virtual machine on IaaS could be considered media encryption. Database level is incorrect because, due to the complexity involved, data should be encrypted at the application layer in cloud implementations rather than being encrypted within a database.

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What is differential backup?

What is differential backup?

• It is like any other backup ; just a fancy name
• backup of changes after the last full backup
• A quick backup
• backup of changes since last incremental backup 

EXPLANATION

A differential backup backs up only the files that changed since the last full backup. For example, suppose you do a full backup on Sunday. On Monday you back up only the files that changed since Sunday, on Tuesday you back up only the files that changed since Sunday, and so on until the next full backup. The amount of data being backed up grows with each differential backup until the next full back up

SOURCE

https://www.acronis.com/en-us/articles/incremental-differential-backups/

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What is the keyboard shortcut to bring up the Task Manager?

What is the keyboard shortcut to bring up the Task Manager?

• Alt-Tab
• Ctrl-Shift-Escape
• Windows key-R
• Ctrl-Alt-Delete 

EXPLANATION

The correct answer is Ctrl-Shift-Esc. This keyboard shortcut is an easy and fast way to quickly bring up task manager and the resource monitor.

SOURCE

https://www.cnet.com/how-to/tip-of-the-day-a-quick-keyboard-shortcut-for-task-manager/

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On which layer of the OSI model are packets formed?

On which layer of the OSI model are packets formed?

• 2
• 4
• 1
• 3

EXPLANATION

Packets exist on the third, or Network, layer of the OSI model. The following are the counterparts for packets on the other layers: Layer 1 (Physical): bits; Layer 2 (Data Link): frames; Layer 4 (Transport): segments.

For additional discussion about this question please see https://community.spiceworks.com/topic/1867769-which-layer-of-the-osi-model-does-a-packet-exist-on-i...

SOURCE

https://en.wikipedia.org/wiki/OSI_model#Description_of_OSI_layers

 

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Which of the following is not a part of 3-2-1 backup strategy?

Which of the following is not a part of 3-2-1 backup strategy?

• Different backup media vendors
• Multiple backup copies
• Different backup storage location
• Different backup media types 

EXPLANATION

The 3-2-1 backup strategy, also known as the Rule of Three, says that you should have at least 3 different copies of the data on at least 2 different types of media in at least 1 different location.

SOURCE

https://quiz.techlanda.com/2017/11/which-of-following-is-not-part-of-3-2-1.html

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