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What does TCP breaks data into?

Data transmitted over the Internet is broken into Packets when transmitted over the Internet or other network.


What best describes how telephone calls are carried over data networks and the Internet?

The telephone call has been transmitted over data networks/internet.


What is write-through in memory caches?

When a datum is written to the cache, it must at some point be written to the backing store as well. The timing of this write is controlled by what is known as the write policy. In a write-through cache, every write to the cache causes a write to the backing store. Alternatively, in a write-back cache, writes are not immediately mirrored to the store. Instead, the cache tracks which of its locations have been written over (these locations are marked dirty). The data in these locations is written back to the backing store when those data are evicted from the cache. For this reason, a miss in a write-back cache will often require two memory accesses to service: one to retrieve the needed datum, and one to write replaced data from the cache to the store.The preceding information was obtained from the related link at the left.Write Back - Data is written first to the cache, then to the logical drive for better performance. The Promise VTrak has a cache backup battery to protect data in the cache from a sudden power failure.Write Thru - Also written as "Write Through". Data is written to the cache and the logical drive at the same time for safer operation. No battery backup is needed since data is written to the drives immediately.


Which of the following can be used to monitor and capture data that is transmitted over a network?

packet sniffer


Which hashing algorithm is used to verify the integrity of data that has been transmitted over a network?

MD5


How is data transmitted securely over a network?

Data is transmitted securely over a network through encryption, which scrambles the data into a code that can only be read by authorized parties with the correct decryption key. This ensures that even if the data is intercepted, it cannot be understood by unauthorized users. Other security measures, such as firewalls and secure protocols, also help protect data during transmission.


Refers to the amount of data that can be transmitted over a communications medium at one time?

HUB


Why is fax slow?

because it is converting the image on the fax down to data that can be transmitted over a phone line.


What is packet oriented data service?

A method of data transmission in which small blocks of data are transmitted rapidly over a channel dedicated to the connection only for the duration of the packet's transmission.


What is the differnece in how voice is transmitted over a PSTN and how voice is transmitted over an IP network?

The difference: With PSTN, the voice is transmitted through the network of cables. While with VoIP is transmitted through the internet. This is the main difference between the two communication systems.


What is a basic definition of cache memory on a computer?

A cache is a place to store recently used data. The cache is comprised of faster memory than the memory it caches. The philosophy is that memory that is used is more apt to be used again, so the memory is stored in cache using a most recently used algorithm. This results in faster performance.


What types of data can be transmitted over a network?

Basically, any type of data. Data stored in computers is stored as 1's and 0's; such data ("digital data") can be encoded in such a way that it represent a wide variety of types of data, such as documents, images, sounds, videos, computer programs, and probably several other types of information. Any such data can be transmitted over a network. However, the network may impose a limit on how fast such data can be transmitted - or more accurately, with what bandwidth (measured in bits per second or some multiple, for example, Mbps). This may make it impractical, for example, to transmit high-quality movies over certain slower networks.