How many bits and bytes are in an IPv4 address?

How many bits and bytes are in an IPv4 address?

• 128 bits (16 bytes)
• 64 bits (8 bytes)
• 256 bits (32 bytes)
• 32 bits (4 bytes) 

EXPLANATION

IP addresses in Internet Protocol version 4 (IPv4) networking consist of 32 bits (4 bytes).
The address 192.168.0.1, for instance, has values 192, 168, 0 and 1 for each of its bytes. The bits and bytes of that address are encoded like so:

11000000 10101000 00000000 00000001

 

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How many bytes and bits make up an IPv6 address?

How many bytes and bits make up an IPv6 address?

• 256 bits (32 bytes)
• 32 bits (4 bytes)
• 64 bits (8 bytes)
• 128 bits (16 bytes) 

EXPLANATION

IPv6 addresses are 128-bit hexadecimal numbers

The IPv4 addresses we are all used to seeing are made up of four numerical octets that combine to form a 32-bit address. IPv6 addresses look nothing like IPv4 addresses. IPv6 addresses are 128 bits in length and are made up of hexadecimal characters.
In IPv4, each octet consists of a decimal number ranging from 0 to 255. These numbers are typically separated by periods. In IPv6, addresses are expressed as a series of eight 4-character hexadecimal numbers, which represent 16 bits each (for a total of 128 bits). As we'll see in a minute, IPv6 addresses can sometimes be abbreviated in a way that allows them to be expressed with fewer characters.

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In Active Directory, what does the acronym "UPN" stand for?

In Active Directory, what does the acronym "UPN" stand for?

• User Password Notification
• Universal Private Nonce
• User Principal Name
• Universal Product Number 

EXPLANATION

UPN
Acronym for User Principal Name, or the userPrincipalName attribute. See User-Principal-Name attribute .

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What is a CRC sequence used for?

What is a CRC sequence used for?

• To provide redundancy
• To carry address information
• To detect errors in digital networks
• To pass a key encryption method 

EXPLANATION

A cyclic redundancy check is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents.

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When it comes to telecommunications, what's a VBR?

When it comes to telecommunications, what's a VBR?

• Vegetable to Bacon Ratio
• Visual Basic Remote
• Variable Bit Rate
• Volume Boot Record 

 

EXPLANATION

Variable bitrate (VBR) is a term used in telecommunications and computing that relates to the bitrate used in sound or video encoding. As opposed to constant bitrate (CBR), VBR files vary the amount of output data per time segment. VBR allows a higher bitrate (and therefore more storage space) to be allocated to the more complex segments of media files while less space is allocated to less complex segments. The average of these rates can be calculated to produce an average bitrate for the file.
MP3, WMA and AAC audio files can optionally be encoded in VBR, while Opus, Vorbis are always in VBR.^[1][2][3] Variable bit rate encoding is also commonly used on MPEG-2 video, MPEG-4 Part 2 video (Xvid, DivX, etc.), MPEG-4 Part 10/H.264 video, Theora, Dirac and other video compression formats.^{[citation needed]} Additionally, variable rate encoding is inherent in lossless compression schemes such as FLAC and Apple Lossless

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