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Explain the purpose of a Virtual Private Network. Explain the role of Application Programming Interfaces (APIs) in modern software development.
Computer Science
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2 partsa(i)
a(ii)
Huu hapa ni jibu la swali la 12:
a)
i. Ili kukokotoa Jumla ya Alama kwa mwanafunzi David, formula itakuwa:
ii. Ili kukokotoa Wastani wa Alama kwa Alice, formula itakuwa:
b) Faida mbili za kutumia electronic spreadsheets (lahajedwali za kielektroniki) badala ya manual spreadsheets (lahajedwali za mikono) ni:
- Usahihi na Uendeshaji Kiotomatiki: Lahajedwali za kielektroniki hufanya hesabu kiotomatiki, kupunguza makosa ya kibinadamu na kuhakikisha usahihi wa data.
- Ufanisi na Kasi: Ni rahisi na haraka kuingiza, kusasisha, na kuchambua data nyingi, kuokoa muda mwingi ikilinganishwa na lahajedwali za mikono.
c) Tofauti kati ya "=sum ()" na "=A+B" ni:
- =SUM(): Hii ni function (kazi) inayotumika kujumlisha safu nzima ya seli (kwa mfano,
=SUM(A1:A5)) au seli nyingi tofauti (kwa mfano,=SUM(A1, B1, C1)). Inafaa kwa kujumlisha data nyingi. - =A+B: Hii ni arithmetic operator (opereta ya hesabu) inayotumika kujumlisha thamani za seli mbili maalum (kwa mfano,
A1+B1). Inatumika kwa kujumlisha seli chache tu.
d) Sifa tatu za dirisha la MS Word ni:
- Ribbon: Hii ni sehemu iliyo juu ya dirisha yenye tabs (vichupo) kama Home, Insert, Page Layout, n.k., ambazo zina vikundi vya amri zinazohusiana.
- Title Bar: Hii ni sehemu iliyo juu kabisa ya dirisha inayoonyesha jina la waraka unaofanya kazi nao na jina la programu (Microsoft Word).
- Status Bar: Hii ni sehemu iliyo chini kabisa ya dirisha inayoonyesha taarifa kuhusu waraka, kama vile nambari ya ukurasa wa sasa, idadi ya maneno, na lugha inayotumika.
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