单选题 Questions 59～60 are based on the following information.
A hash table with hash function
H1 (k)=k mod 13
Is shown below.

单选题 How many key comparisons occur in searching for key 35 in the given hash table? {{U}} {{/U}}

A. 0
B. i
C. 2
D. 3

【正确答案】 D

【答案解析】

单选题 If a new key 67 is inserted into the given hash table, what will be its address? {{U}} {{/U}}

A. 3
B. 4
C. 5
D. 6

【正确答案】 B

【答案解析】

单选题 What is the contrapositive of the relation represented in the exhibit shown below? {{U}} {{/U}}

【正确答案】 C

【答案解析】

单选题 Which function is not served by building a prototype? {{U}} {{/U}}

A. It takes the place of the final system
B. It assists in gathering software requirements
C. It assists in estimating the cost of the project
D. It is used as the foundation of the larger projects

【正确答案】 A

【答案解析】

单选题 Which of the following statements about testing software with data is (are) true? {{U}} {{/U}}
Ⅰ．The primary purpose of such testing is to find errors
Ⅱ．Such testing can demonstrate the existence of errors but cannot demonstrate the absence of errors

A. Neither
B. Ⅰ only
C. Ⅱ only
D. Ⅰ and Ⅱ

【正确答案】 B

【答案解析】

单选题 In the following statements about functional dependency, which one is incorrect? {{U}} {{/U}} A) if X’

X, then X→X' B) if X→Y and Y’

Y, then X→Y' C) if X→Y and X’

【正确答案】 C

【答案解析】

单选题 The most commonly used locked level in implementing concurrency control is at which of the following levels? {{U}} {{/U}}

A. record
B. database
C. table
D. field

【正确答案】 A

【答案解析】

单选题 Which is not a characteristic of an RISC processor? {{U}} {{/U}}

A. a high clock speed
B. a highly optimized pipeline
C. a few general-purpose registers
D. a limited amount of small instructions

【正确答案】 C

【答案解析】

单选题 Local bus can reduce the occupation time of CPU. For the EISA local bus, commonly the time can be reduced to{{U}} {{/U}}.

A. 42%
B. 22%
C. 12%
D. 2%

【正确答案】 C

【答案解析】

单选题 How many bits IP address are there in IPv6? {{U}} {{/U}}

A. 32
B. 64
C. 128
D. 256

【正确答案】 C

【答案解析】

单选题 Which routing select algorithm is described below? According to a kind of fix regulation, the select algorithm of route works and has nothing to do with the network information newly. {{U}} {{/U}}

A. Static Routing Algorithm
B. Dynamic Routing Algorithm
C. Centralized Routing Algorithm
D. Distributed Routing Algorithm

【正确答案】 A

【答案解析】

单选题 About the following IP addresses, Which is incorrect? {{U}} {{/U}}

A. 201.199.255.11
B. 201.198.132.1
C. 201.199.128.6
D. 201.198.134.257

【正确答案】 D

【答案解析】