Answer:
B
Explanation:
Computer security, cybersecurity or information technology security (IT security) is the protection of computer systems and networks from information disclosure, theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide.[1]
Answer:
convert the MP4 format file to the OGG format file
Explanation:
An OGG file is a compressed audio file of Ogg Vorbis that is used for holding audio data. It is a free and an open container file format which is maintained by Xiph.Org Foundation. OGG format file can multiplex independent streams of video, text, audio and meta data.
The OGG file has better sound quality and characteristics than a MP3 or MP4 files. The MP4 file format can be converted into OGG format file if the files are saved in different formats in the computer which can play only OGG format.
Answer:
B - array; hash
Explanation:
Arrays store elements of the same data type in a list. Every element in the array is assigned a unique integer (starting at 0). You are able to access/process an element by using its assigned integer. Hashes are similar in the fact that they also store data. The difference is that each element is assigned an object type (instead of an integer), making it a collection of key pairs, as such you would typically not use this to process elements efficiently.
He probably hasn't sent the request or you haven't updated it or he is not part of your Facebook contac list
