Reduce File Sizes For Storage Or Transmission
Gbogbo ọrọ náà
A holiday video, a folder of photos, a detailed report packed with images: all of them can be too big to email or slow to upload. File compression solves this by squeezing a file into fewer bytes so it takes less storage space and travels faster. The clever part is choosing how to squeeze it, because some methods keep every last detail while others throw a little away to make the file even smaller.
In this lesson you will learn why we reduce file sizes for storage and transmission, how compression with .zip and .rar works, and the crucial difference between lossless compression, which restores the exact original, and lossy compression, which discards some detail permanently. You will learn which file types use each method and how to choose the right approach for a given task.
Ebumnobi
- Compress files.
- Reduce file sizes for storage or transmission where necessary using file compression including .zip, .rar.
- File compression.
- The need to reduce file sizes for storage or transmission.
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na Reduce File Sizes For Storage Or Transmission. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Lossless compression is best described as compression that: A. Discards some detail permanently B. Reduces file size with no loss of data, so the original can be restored C. Only works on images D. Increases the file size Answer: B
- Which file format normally uses lossy compression? A. .png B. .zip C. .jpg D. .txt Answer: C
- Two main reasons for compressing a file are to save storage space and to: A. Improve image quality B. Reduce transmission time C. Add formatting D. Encrypt the data Answer: B
- Which of these would be unsuitable for lossy compression? A. A holiday photograph B. A music track C. A program's source code D. A streamed video Answer: C
- A .zip file is best described as: A. An image format B. A container that holds one or more files in compressed form C. A type of encryption D. An audio format Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Reduce File Sizes For Storage Or Transmission? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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