Digital Currency
Muhtasari
More and more money never takes a physical form at all. When you tap a card or pay through an app, no coins or notes change hands; only data moves between computers. Digital currency is that money, and cryptocurrencies push the idea further by removing the bank from the middle altogether.
In this lesson you will learn what a digital currency is and how it is used, then meet the problem a decentralised currency creates: with no bank in charge, how do you stop people cheating? The answer is the blockchain, a tamper-evident digital ledger, and you will follow exactly how it records and protects every transaction.
Malengo
- 1 Understand the concept of a digital currency and how digital currencies are used
- 2 Understand the process of blockchain and how it is used to track digital currency transactions
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Digital Currency. 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.
- A digital currency is best described as a currency that: A. exists only as coins and notes B. exists electronically rather than physically C. can never be used online D. is controlled by a single shop Answer: B
- Which protocol is used to encrypt digital-currency payment data sent between computers? A. HTTP B. FTP C. HTTPS D. SMTP Answer: C
- A cryptocurrency such as Bitcoin uses which type of system? A. centralised B. decentralised C. manual D. analogue Answer: B
- What is the digital ledger in a blockchain? A. a single encrypted password B. a list of all the transactions recorded by the blockchain C. a type of cookie D. the bank's central computer Answer: B
- Once a transaction has been added to a blockchain ledger, it: A. can be edited by anyone B. is deleted after a day C. cannot be changed D. becomes private and unviewable Answer: C
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Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Digital Currency? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
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