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推荐文章：2002年9月全国计算机等级考试 三
推荐文章简介：
2002年9月全国计算机等级考试 三级PC技术 笔试试卷 (考试时间120分钟，满分100分) 一、选择题（每小题1分，共60分） 下列各题A）、B）、C）、D）四个选项中，只有一个选项是正确的。请将正确选项涂写在答题
p;p《》nil
then begin
traverse(p↑。left)；
process(p)；
traverse(p↑。right)
end
end
A)lnorder B)Preorder C)Postorder D)Reorder
(69)What storage scheme does ＭＳ－ＤＯＳuse for storing
files&n
bsp;on a disk？
A)l——nodes B)a linked list allocation
C)a continuous allocation D)a linked list with index
(70)Which of the followings is ＮＯＴa condition for deadlock？
A)Starvation B)Circular Wait
C)NO Preemption D)Mutual Exclusion
(71)Assume that an operating system uses a round——robin scheduler.The
process’s quantum is 20 msec,and the context switch is 5 msec.What percentage of the
context switch is 5 mesc.What percentage of the Ｃ
ＰＵ’s time is spent on administrative overhead？(2 grades)
A)5％B)15％C)20％D)25％
(72)What state is a process in when it can’t run because it needs a
resource to become available？(2 grades)
A)Ready B)lnterrupt C)Blocked D)Running
(73)The following sectors are requested from the disk:
11,1,36,16,34,9,12
What is the order of the sector reads if you are using the elevator
algorithm？(2 grades)
A)1,9,11,12,16,34,36 B)11,1,36,16,34,9,12
C)11,12,9,16,1,34,36 D)11,12,16,34,36,9,1
(74)What is the candidate key of a relational database？
A)A field with a constraint placed on it.
B)A set of fields that have no data in them.
C)A set of fields in
a table used to identify a record uniquely.
D)Fields from multiple tables that are used for sorting records.
(75)What Normal From is the table shown in the exhibit？(2 grades)
┌──────────────────────┐
│┌──────────────────┐│
││emps tbl ││
│├──────────────────┤│
││emp_id ││
││emp_name ││
││emp_phone ││
││dept_name ││
││dept_phone ││
││dept_mgrname ││
│└──────────────────┘│
│(1)emp_id→emp_name,emp_phone,dept_name │
│(2)dept_name→dept_phone,dept_mgrname │
└──────────────────────┘
A)1NF B)2NF C)3NF D)BCNF
(76)Which operating system can Oracle database NOT be used in？
A)DOS B)UNIX C)Windows95 D)IBM Mainframes
(77)Which values are NOT permitted to be part of the primary key？
A)NULL B)punctuation
C)special characters D)alpha——numeric characters
(78)Which phase of the software engineering process results in the
Software Requirements Specification？
A)definition phase B)engineering phase
C)maintenance phase D)development phase
(79)When drawing multilevel data flow chart of top——down,the balance
between parent chart and son chart must be taken into account,and to
pass judgment for the balance of the charts is r
egularly maintained by
(2 grades)
A)Output data B)Data dictionary
C)Processing number D)Input data
(80)Which is the strictest form of cohesion？
A)logical B)functional C)procedural D)coincidental
(81)Which is NOT a concept of White Box Testing？(2 grades)
A)You should execute all loops at their boundary conditions
B)You should execute all interfaces at their boundary conditions.
C)You should execute all logical decisions on their true and false
sides.
D)You should execute all independent paths within a module at
least once.
(82)Prototyping method is a dynamic design process,it requires people
who use prototyping method should have the following capability
A)Proficient program expertise
B)Immediately acquire requirement
C)Coordinate &organize eloquently
D)Handle tools smartly
(83)There are two styles in the evolution of instruction set ，that is
CISC and RISC.Which chip belongs to the RISC？
A)i APX 432 B)VAX——11/780
C)Motorola 68000 D)Power PC
(84)In advanced PC bus or local bus,which one has the fastest data
throughput？
A)ISA B)PCI C)MCA D)EISA
(85)There
are many methods in the CPETT(short for Computer Performance
Evaluation Tools and Techniques)。One of them is the method that runs a
Kernel as the load of a computer.So we call it
A)Monitor method B)Benchmark method
C)Model method D)Physical method
(86)There are two common types in page replacement algorithm:stack and
non——stack strategies.When a real page number increase only stack
algorithm can increase the hit rate monotonously.In the following
replacement algorithm,which one belongs to non——stack strategy？(2 grades)
A)FIFO B)LRU C)PFF D)OPT
(87)What binary number is encoded with Differential Manchester in the
diagram below？(2 grades)
│┌─┐┌┐┌┐┌─┐┌┐┌┐┌┐┌─┐│
││││││││││││││││││
││││││││││││││││││
└┘└┘└┘└─┘└┘└┘└┘└─┘└┘
A)10110011100 B)11001100011
C)11000110010 D)00111001101
(88)Each host or router on the Internet has its own IP address.上一页 [1] [2] [3] [4] 下一页 |
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