(a) Explain the following Internet terms
(i) Sign in; (ii) Search engine
(b) Figure 1 and 2 illustrate the access methods.
(i) Identity the hle access method illustrated in:
I. Figure 1; II. Figure 2.
(ii) State one advantage and one disadvantage each for the file access m method illustrated in:
I. Figure 1;
Advantage:
Disadvantage:
II. Figure 2.
Advantage:
Disadvantage:
a(i) What is data cable?
(ii) List two types of data cable.
(iii) Explain how bus speed can affect the speed of data.
(b) In the context of data conversion, explain the following terms:
(i) register; (i) address.
(a) Explain the following computer terms
(i) fle; (ii) record; (ii) field
(b) In a school registry, computer system is used to store students details.
(i) In addition to name and address fields in a student's record, list three other fields that may be included.
(i) Outline the steps involved in editing the field of a student's record.
(iii) Name two database applications that can be used for creating the record in 3b(i).
(i)Explain a logic truth table
(ii) Name two types of logic gate.
(ii) Using the two named logic gates in 4a(ii), complete the truth table in Table 1.
Table 1
| X | Y | Z = X ? Y | Z = X ? Y |
| 0 | 0 | ||
| 0 | 1 | ||
| 1 | 0 | ||
| 1 | 1 |
(b) Explain the term comparator as a logic device.
(a) Give two differences between a compiler and an interpreter in Table 2.
Table 2
| Compiler |
Interpreter |
(b) State one advantage of coding in:
(i) high level programming language;
(i) low level programming language.
(c) Outline two characteristics of a good program.