When data traveling across a network fails to reach its destination, this is known as which of the following:

When data traveling across a network fails to reach its destination, this is known as which of the following:

• Packet loss
• Missed connections
• Delayed package
• Missed delivery 

EXPLANATION

Packet loss is typically caused by network congestion and is measured as a percentage of packets lost with respect to packets sent.

The other three are not really network related.

See: https://en.wikipedia.org/wiki/Packet_loss for more details on packet lossed.

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Which port does the AWS Route 53 service use?

Which port does the AWS Route 53 service use?

• 76
• 53
• 109
• 8080 

 

EXPLANATION

Amazon Route 53 provides highly available and scalable Domain Name System (DNS), domain name registration, and health-checking web services. It is designed to give developers and businesses an extremely reliable and cost effective way to route end users to Internet
applications by translating names like example.com into the numeric IP addresses, such as 192.0.2.1, that computers use to connect to each other. The name is a reference to TCP or UDP port 53, 

SOURCE

https://en.wikipedia.org/wiki/Amazon_Route_53

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In respect to GDPR; when personal data has been collected with consent can the consenting party later request this data be deleted

In respect to GDPR; when personal data has been collected with consent can the consenting party later request this data be deleted

• Yes, chapt 3. art 17. This is the "right to be forgotten"
• No, Data obtained with consent can't be deleted
• No, Data needed by a process can't be deleted
• No, Data can't be deleted 

 

EXPLANATION

The data subject shall have the right to obtain from the controller the erasure of personal data concerning him or her without undue delay and the controller shall have the obligation to erase personal data without undue delay where one of the following grounds applies:

• The personal data are no longer necessary in relation to the purposes for which they were collected or otherwise processed;
  
• The data subject withdraws consent on which the processing is based according to point (a) of Article 6(1), or point (a) of Article 9(2), and where there is no other legal ground for the processing;
  
• The data subject objects to the processing pursuant to Article 21(1) and there are no overriding legitimate grounds for the processing, or the data subject objects to the processing pursuant to Article 21(2);
  
• The personal data have been unlawfully processed;
  
• The personal data have to be erased for compliance with a legal obligation in Union or Member State law to which the controller is subject;
  
• The personal data have been collected in relation to the offer of information society services referred to in Article 8(1).
  

SOURCE

https://gdpr-info.eu/art-17-gdpr/

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In SQL, which type of JOIN returns all rows from at least one of the tables mentioned from the FROM clause, providing those rows meet any WHERE or HAVING search conditions?

In SQL, which type of JOIN returns all rows from at least one of the tables mentioned from the FROM clause, providing those rows meet any WHERE or HAVING search conditions?

• Table Join
• Outer Join
• Comparison Join
• Inner Join 

 

EXPLANATION

Inner joins return rows only when there is at least one row from both tables that matches the join condition. Inner joins eliminate the rows that do not match with a row from the other table. Outer joins, however, return all rows from at least one of the tables or views mentioned in
the FROM clause, as long as those rows meet any WHERE or HAVING search conditions. All rows are retrieved from the left table referenced with a left outer join, and all rows from the right table referenced in a right outer join. All rows from both tables are returned in a full outer join.

SOURCE

https://technet.microsoft.com/en-us/library/ms187518(v=sql.105).aspx

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In Windows, if you want to format a hard drive or removable disk so it can be read and written by both Windows and Apple machines without using any 3rd party tools, you would format the disk as which of the following?

In Windows, if you want to format a hard drive or removable disk so it can be read and written by both Windows and Apple machines without using any 3rd party tools, you would format the disk as which of the following?

• HFS
• REFS
• exFAT
• NTFS 

 

EXPLANATION

Both Windows and Apple machines can read drives formatted in FAT32 and exFAT.  Apple can read NTFS but cannot write to it.

SOURCE

https://www.laptopmag.com/articles/format-drive-for-windows-and-mac

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Ext4 has the Max file size of ?

Ext4 has the Max file size of ?

• 16 TiB (for 16k block filesystem)
• 16 TiB (for 8k block filesystem)
• 16 TiB (for 4k block filesystem)
• 16 TiB (for 28k block filesystem) 

 

EXPLANATION

The ext4 filesystem can support volumes with sizes up to 1 exbibyte (EiB) and files with sizes up to 16 tebibytes (TiB).[12] However, Red Hat recommends using XFS instead of ext4 for volumes larger than 100 TB.[13][14]

SOURCE

https://en.wikipedia.org/wiki/Ext4

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Exchange Server 2016 is not supported on this server platform.

Exchange Server 2016 is not supported on this server platform.

• Windows Server 2012 x64
• Windows Server 2016 x64
• Windows Server 2016 Core
• Windows Server 2012 R2 x64 

 

EXPLANATION

We don't support the installation of Exchange 2016 on a computer that's running Windows Server Core or Nano Server. The Windows Server Desktop Experience feature needs to be installed. To install Exchange 2016, you need to do one of the following to install the Desktop Experience on Windows Server prior to starting Exchange 2016 Setup:
Windows Server 2012 and Windows Server 2012 R2: Run the following command in Windows PowerShell

Install-WindowsFeature Server-Gui-Mgmt-Infra, Server-Gui-Shell -Restart

Windows Server 2016: Install Windows Server 2016 and choose the Desktop Experience installation option. If a computer is running Windows Server 2016 Core mode and you want to install Exchange 2016 on it, you'll need to reinstall the operating system and choose the Desktop Experience installation option.

SOURCE

https://docs.microsoft.com/en-us/exchange/plan-and-deploy/system-requirements?view=exchserver-2016

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