UNIT SAINS KOMPUTER KOLEJ MATRIKULASI MELAKA 1 ANSWER SCHEME SC015 (IQUA) Question No. Answer Mark 1 Input: • System reads the current balance. • System reads the price, quantity. Output: • System displays the latest balance Process: • System verify QR Code • System check balance available • System calculate amount to deduct • System updates the balance Storage: • System saves the payment information. • System saves the e-wallet balance. Or any suitable answer. Choose any one (1) J1 J1 J1 J1 2(a) 1 1 1 1 1 0 1 1 1 2 8 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 256 128 64 32 16 8 4 2 1 = 256 + 128 + 64 + 32 + 16 + 4 + 2 + 1 = 50310 J1 J1 J1 2(b) AD01l6 = (A x 163) + (D x 162) + 0 + (1 x160) = (10 x 4096) + (13 x 256) + 0 + 1 = 40960 + 3328 + 1 = 4428910 J2 J1 2(c) 3354l0 = D1A16 16 3354 16 209 ---- 10 (A) 16 13 ---- 1 0 ---- 13 (D) J3 J1
UNIT SAINS KOMPUTER KOLEJ MATRIKULASI MELAKA 2 Question No. Answer Mark 2(d) 0 0 0 1 0 1 1 0 1 1 1 0 2 32 22 12 0 2 32 22 12 0 2 32 22 12 0 8 4 2 1 8 4 2 1 8 4 2 1 0+0+0+1 0+4+2+0 8+4+2+0 1 6 14 (E) 1011011102 = 16E16 J3 J1 2(e) D (13) 0 C (12) 2 32 22 12 0 2 32 22 12 0 2 32 22 12 0 8 4 2 1 8 4 2 1 8 4 2 1 1 1 0 1 0 0 0 0 1 1 0 0 D0C16 = 11010000110012 J3 J1 2(f) Criteria Extended ASCII Unicode Number of bits 8 16 Context of use Personal computer/ server Implemented in several OS (Windows, Mac OS, Linux) J1,J1 J1,J1 3(a) P : P= (X’ ∙ Y)’ Q : Q = (X’ ∙ Y)’ + ( X + Z )’ S : S =(X’ ∙ Y)’ + ( X + Z )’ + Z’ J2 J2 J2
UNIT SAINS KOMPUTER KOLEJ MATRIKULASI MELAKA 3 Question No. Answer Mark 3(b) A B C B’ B’ C (B’ C)’ (B’ C)’ • A (B’ C)’ • A + C 0 0 0 1 1 0 0 0 0 0 1 1 0 1 0 1 0 1 0 0 0 1 0 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 0 0 1 0 1 1 0 1 1 1 1 1 0 0 0 1 1 1 1 1 1 0 1 0 0 1 J1 J1 J1 J1 J1 J1 J6 3(c)(i) Let A represents “Aireen goes out for a walk” M represents “Moon is out” R represents “Raining” J1 J2 3(c)(ii) Y= Can borrow A= show matric card B= show IC C= sports equipment available D= system breakdown Boolean expression: Y= (A+B).C.D’ J1 J1 J3
UNIT SAINS KOMPUTER KOLEJ MATRIKULASI MELAKA 4 Question No. Answer Mark 3(c)(iii) F = (A∙P) + (A∙B) J1 J3 4(a) J6 4(b) Type X Type Y Area of coverage Wide Area Network is a network that covers a large geographical area Local Area Network is a network that covers a limited geographical area Ownership No ownership Owned by individual or an organization J1, J1 J1, J1 4(c) Intranet Extranet Only can be access by the members of the organizations Can be access by the members of the organizations and authorized outsiders. J2, J2
UNIT SAINS KOMPUTER KOLEJ MATRIKULASI MELAKA 5 Question No. Answer Mark 4(d)(i) IPv6 provide much larger address space because today the vast amount number of devices connecting to Internet. J2 4(d)(ii) A domain name is a text version of IP address (number version) but both send data and information at specific destination. J2 5(a) Information privacy J1 5(b) • Do not sign up/subscribe your email to a website that looks suspicious. • Do not share your email address to anyone unknown • Do not click to any unknown link • Make sure password is strong and updated Or any suitable answer. J1 5(c) • Be polite • Use emoticons Or any suitable answer. J1 J1 6(a)(i) Analysis J1 6(a)(ii) Design J1 6(a)(iii) Planning J1 6(a)(iv) Implementation J1 6(b) Users or clients’ requirements cannot be fulfilled J2 6(c) • Perform maintenance activities • Monitor system performance • Assess system security Choose any two (2) J1 J1 END OF ANSWER SCHEME