Encryption
Muhtasari
Every time you log in to a bank or send a message, your data travels across networks where it could be intercepted. Encryption is the lock that keeps that data meaningless to anyone who steals it on the way. It does not stop a thief grabbing the data, it makes the stolen data useless.
In this lesson you will learn why encryption is needed, the difference between scrambled cipher text and readable plain text, and the two methods you must be able to describe: symmetric encryption, which shares one secret key, and asymmetric encryption, which uses a clever public and private key pair to keep the secret safe even on the open internet.
Malengo
- 1 Understand the need for and purpose of encryption when transmitting data
- 2 Understand how data is encrypted using symmetric and asymmetric encryption
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Encryption. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- What is the name given to data after it has been encrypted? A. plain text B. cipher text C. metadata D. payload Answer: B
- Symmetric encryption uses: A. no key B. a public and a private key C. the same key to encrypt and decrypt D. two public keys Answer: C
- Which statement about encryption is correct? A. it stops a hacker stealing data B. it makes stolen data meaningless C. it deletes intercepted data D. it speeds up transmission Answer: B
- In asymmetric encryption, which key decrypts data sent to you? A. your public key B. your private key C. the sender's private key D. a shared key Answer: B
- Why is asymmetric encryption considered more secure for internet use? A. it uses shorter keys B. the decryption key is never transmitted C. it does not need a key D. it is faster Answer: B
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Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Encryption? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
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