Medium Questions

Medium Questions

by Tanat Tonguthaisri
itpe@nstda.or.th

Question A
Read the following description concerning the procedure for
identifying a system failure in a LAN-based system, and
then answer Q1 through Q4.

Mr. M’s department uses a LAN-based system which
consists of two PCs (PC1 and PC2), one server, one
printer, and one hub, connected with four cables a
through d as shown in the figure below.

Fig. LAN configuration

The printer connected to the LAN has a print server
function, which is configured to allow PCs to print from
them directly. One day, Mr. M tried to print from PC1 but
could not. On the previous day, Mr. M could print from PC1
without any problem.
Here, in inspecting the connection between a device and a
cable, a defective socket is identified as a device failure,
and a defective connector is identified as a cable failure.
There can only be one failure in the system at any given
time, and there is no failure in PC1.

1. (NW) Among the eight components (PC2, Server,
Printer, Hub, and Cables a through d) of the LAN, how
many can be considered as a candidate (or candidates) for
the cause of the failure?

a) 1 b) 2 c) 3 d) 4

2. (NW) In order to isolate the cause of the failure,
Mr. M checked if he could print from PC2. He then
repeated the test after switching the connection on
the Hub end for Cables c and d, which are
connected to PC1 and PC2, respectively.

If Mr. M succeeds in printing from PC2 in both cases
above, how many components can be considered as
a candidate (or candidates) for the cause of the
failure among the eight components (PC2, Server,
Printer, Hub, and Cables a through d)?

a) 0 b) 1 c) 2 d)

3. (BT) Mr. M decides to make a flowchart of the
procedure for identifying the failure cause. Which of the
following is the appropriate statement for X in the
flowchart below? Here, the flowchart is not completed.

Note: The shaded box is intentionally left blank.

Swapping cables

PC2 cannot print.
Cable C is probably defective.

Swapping connection at Hub ends.

PC2 cannot print.
Socket 1 is probably defective.

a) Suspecting that the “socket” connecting PC1 to Hub is defective
b) Suspecting that “Cable c” connecting PC1 to Hub is defective
c) Suspecting “Cable b” connecting Printer to Hub is defective
d) Suspecting that “Printer” is defective

4. (BT) Mr. M continued working on the flowchart of the
procedure for identifying the failure cause. Which of the
following is the appropriate statement for Y in the flowchart
below? Here, the flowchart is not completed.

Note: The shaded box is intentionally left blank.

a) Suspecting that “Hub” is defective
b) Suspecting that “Cable b” connecting Printer to Hub is
defective
c) Suspecting that “Cable b” connecting Printer to Hub or “Hub” is
defective
d) Suspecting that “Printer” is defective

Question B
Read the following description concerning sales management of
PC-related equipment, and then answer Q5 through Q8.

Company I is engaged in the PC-related equipment sales
business for corporate customers and manages its sales
management information by using databases. The company
issues billing statements (shown in Fig. 2) at the time of sales by
using the database (shown in Fig. 1) and the print function of the
database management system.

When the unit price of each product is changed as required, the
corresponding record in the unit price table is overwritten with the
new prices and the timestamp of update. Each corporate
customer (hereinafter called customer) designates one contact
person as a rule, or sometimes one person per department.
However, one customer code is assigned to each of the
customers, not to each of the contact persons.

Product table

Product_code Product_name Classification_code Manufacturer_code Supplier_code

Unit price table
Product_code Unit_price Update_timestamp

Customer table
Customer_code Customer_name

Contact person table

Customer_code Dept_name Location Name Title Phone_number

NOTE: “Dept_name” means department name.

Fig. 1 Database structure for sales management operations

Fig. 2 Example of billing statement

5. (BT) Company I performs data backup of the tables
in Fig. 1 at month end. When the contact person table
has the structure described below, which of the
following is the minimum size of the storage in kilobytes
to be reserved for table backup? Here, the backup
data is not compressed, and 1 kilobyte is 103 bytes.

[Structure of contact person table]
Number of records: 10,000
Customer code and telephone number: 10 digits each in single-byte code
Dept name: 20 characters in double-byte code
Location: 40 characters in double-byte code
Name and title: 10 characters each in double-byte code
a) 1,000
b) 1,500
c) 1,800
d) 2,000

Number of records: 10,000
Customer code and telephone number: 10 digits
each in single-byte code 10 x 2 x 1 = 20
Dept name: 20 characters in double-byte code
20 x 2 = 40
Location: 40 characters in double-byte code
40 x 2 = 80
Name and title: 10 characters each in double-
byte code 10 x 2 x 2 = 40

20 + 40 + 80 + 40 = 180
180 bytes x 10,000 / 1,000 bytes/kb
= 1,800 kb

6. (DB) Which of the following is
appropriate as a primary key or a
set of primary keys in order to
uniquely identify records in the
contact person table in Fig. 1?
a) Customer_code
b) Customer_code, Name
c) Customer_code, Dept_name
d) Name, Title

7. (DB) The four tables in Fig. 1 must be referenced in order to issue a
billing statement in Fig. 2. When one copy of the billing statement is
issued, which of the following shows the comparison of the number of
times that each of the four kinds of records is referenced?

Here, customer code, name, department name, and product
code and quantity of the purchased product are known at the time of
issue of the billing statement, so each table is referenced based on
these values. At the time of referencing, the operation to retrieve one
record by using the primary key (or the set of primary keys) is counted
as one time. In addition, “product table > unit price table” means that
the number of times of referencing the product table is greater than that
for the unit price table.

a) Unit price table = Product table = Contact person table = Customer table
b) Unit price table = Product table ≥ Contact person table = Customer table
c) Unit price table ≥ Product table ≥ Contact person table = Customer table
d) Unit price table ≥ Product table ≥ Contact person table ≥ Customer table

8. (DB) The billing statement in Fig. 2 is to be recorded as a table.
When the billing statement table records seven items—Slip_number,
Date, Customer_code, Dept_name, Product_code, Quantity, and
Unit_price—in a normalized form, which of the following is the
appropriate table structure?
a) Slip_number Date Customer_code Dept_name Product_code Quantity Unit_price

b) Slip_number Date Customer_code Dept_name

Product_code Quantity Unit_price

c) Slip_number Date Customer_code Dept_name

Slip_number Product_code Quantity Unit_price

d) Slip_number Date

Customer_code Dept_name

Product_code Quantity Unit_price

Question C Read the following description concerning room entry
control for facilities, and then answer Q9 through Q12.

Sales branch T of Company S has a plan to install a room entry control
system that uses ID cards. The types of facilities of sales branch T and
the categories of people subject to control (hereinafter called target
categories) are classified as shown in the table below, and the
categories indicating whether or not room entry is permitted are set
(hereinafter called permission categories). Here, a target category for
which entry into the facility is permitted is indicated by “√” and one for
which entry is not permitted is indicated by “−” in the table below.

Table Setting of the permission categories

Target category Visitor Sales department staff
Facility
Office – √
Reception room √ √

In order to set permission categories for facilities and target categories,
the permission categories are entered in the setting formats shown
below from the administrative PC of the room entry control system.

[Setting formats]

Format 1 Policy Permission category

Format 2 Facility Permission category Target category

Note: The third field of format 1 is not
used.

(1) In order to set permission categories, format 1 is described on the
first line and format 2 is described on as many lines as necessary starting with
the second line.

(2) For the permission category, “ACCEPT” is described when entry into
the facility is permitted, and “DENY” is described when entry is not permitted.

(3) Format 1 is intended for describing a policy, and the word “Policy” is
described in the first field. The description of a policy specifies the permission
category to be applied to the combinations of both a facility and a target
category that do not correspond to any of the combinations described on the
second and subsequent lines.

(4) Format 2 is intended for describing the combinations of a facility and
a target category as well as the permission categories for those combinations.
Multiple target categories having the same permission category for a facility
can be described by separating each of them with a comma.

(5) To determine whether entry into the facility is permitted or not, the
second and subsequent lines are checked in the order they are listed. When
the line containing the specified combination of both a facility and a target
category is found, the permission category described on that line is applied
and the subsequent lines are not checked.

9. (DB) Regarding the setting of the permission categories in the
table, when the permission category for Policy is set to “ACCEPT”,
the description of the setting is as shown in the figure below.
Regarding the setting in the table, when the permission category for
“Policy” is set to “DENY”, which of the following is the appropriate
description of the setting?
Policy ACCEPT
Office DENY Visitor

a) Policy DENY
Office ACCEPT Sales department staff

b) Policy DENY
Reception room ACCEPT Visitor, Sales department staff

c) Policy DENY
Office DENY Visitor

d) Policy DENY
Office ACCEPT Sales department staff

10. (DB) Regarding the setting of the permission categories shown in
the table below, when the permission category for “Policy” in format 1
is set to “DENY”, what is the minimum number of lines required for
describing of the setting, including the line describing format 1?

Visitor Sales department staff Engineering department staff
Target category
Facility
Conference room – √ √

Office 1 – √ –

Office 2 – – √

Reception room √ √ √

a) 4 b) 5 c) 6 d) 7

Policy DENY

Conference room ACCEPT Sales department staff, staff
Engineering department

Office 1 ACCEPT Sales department staff

Office 2 ACCEPT Engineering department staff

Visitor,
Reception room ACCEPT Sales department staff,
Engineering department staff

11. (BT) Regarding the setting of the permission categories shown in the table
below, when the permission category for “Policy” is set to “ACCEPT”, the
description of the setting is as shown in Fig. 1. As entry into the special
conference room is permitted for managers, a new target category “Manager”
is created and the description of the setting shown in Fig. 2 is inserted.
Among (1) through (4) shown in Fig. 1, which is the appropriate position
where the setting shown in Fig. 2 is inserted?
Here, the manager of the sales department and the manager of the
engineering department belong to the target category of “Manager”, and both
managers also belong to the target categories of the staff of their respective
departments. In the case where a person to be controlled belongs to two
target categories, when the line matching the combination of a facility and one
of the target categories is found during checking of the description of the
setting, the permission category of that line is applied.

Visito Sales department staff Engineering department staff
Target category r
Facility
Special conference room – – –
Conference room – √ √
Office 1 – √ –
Office 2 – – √
Reception room √ √ √

Policy ACCEPT
(1)

Visitor, Sales department staff,
Special conference room DENY Engineering department staff
(2)

Conference room DENY Visitor
(3)
Office 1 DENY Visitor, Engineering department staff
Office 2 DENY Visitor, Sales department staff
(4)

Fig. 1 Description of the setting
when the permission category for Policy is set to ACCEPT

Special conference room ACCEPT Manager
Fig. 2 Description of the additional
setting

a) (1)b) (2)c) (3) d) (4)

12. (IS) In preparation for a lack of format 2
when a new facility or target category is
inserted, which of the following is the
appropriate method for setting the
permission category for “Policy” from the
viewpoint of security?
a)“ACCEPT” is set so that entry is not
allowed if any setting is missing.
b)“DENY” is set so that entry is not allowed
if any setting is missing.
c) “ACCEPT” is set so that entry is allowed
even if any setting is missing.
d)“DENY” is set so that entry is allowed
even if any setting is missing.

Question D Read the following description concerning the task of
managing the loan-out of documents, and then answer Q13 through Q14.

The data room of Company A’s laboratory is engaged in the task of
managing the loan-out of documents. A document loan-out management
system (hereinafter called the document system) that utilizes PC-based
database software is used for the task of managing the loan-out of
documents.

The database structure of the document system is as follows:
Employee table
Emp_No Emp_name E-mail_address

Document table
Doc_No Doc_title

Loan-out table
Doc_No Doc_title Emp_No Emp_name E-mail_address Loan-out_date Return_date

Note: “Doc_No” stands for document number,
“Doc_title” for document title, “Emp_No” for employee number, and
“Emp_name” for employee name.

The conditions concerning the documents held and the loan-out of
documents are as follows:

[Conditions concerning the documents held and the loan-out]
(1) Only one copy of the same document is held, and a unique
document number is assigned to each document.
(2) The maximum loan-out period is two weeks including the day
on which the document is loaned out. A document returned by an
employee may be loaned out to another employee on the day the
document is returned, but a returned document is not loaned out to the
same employee on the day it is returned.

The procedure from loan-out to return is as follows:
[Procedure from loan-out to return]
(1) An employee takes out the document that he or she wants to
borrow from the library, hands it to the staff member in charge of the
data room (hereinafter called the staff member), and shows his or her
employee number to the staff member.
(2) The staff member performs the loan-out process by using the
document system and hands over the document to the employee.
(3) When the employee returns the document, he or she hands it to
the staff member, who in turn performs the return process by using the
document system.

The specifications for the loan-out process and return process in the
document system are as follows:

[Loan-out process]
(1) The document table is searched by using “Doc_No” to obtain
“Doc_title”.

(2) The employee table is searched by using “Emp_No” to obtain
“Emp_name” and “E-mail_address”.

(3) A record (hereinafter called the loan-out record) for the loan-out
table is prepared, and “Doc_No”, “Doc_title”, “Emp_No”, “Emp_name”, and
“E-mail_address” obtained in (1) and (2) are set. The current date is set as
“Loan-out_date”, and a null value is set as “Return_date”.

(4) The loan-out record set in (3) is added to the loan-out table.

[Return process]
(1) The loan-out table is searched by using “Doc_No” to retrieve the
loan-out record that has a null value as “Return_date”.

(2) The current date is set as “Return_date” of the retrieved loan-out
record, and the loan-out table is updated.

13. (DB) Which of the following is the
appropriate description concerning the
database structure of the document system?
Here, a primary key is a field or combination of
fields that uniquely identifies each record in a
table.
a)The primary key of the loan-out table is the
combination of “Doc_No” and “Emp_No”.
b)The primary key of the loan-out table is the
combination of “Doc_No”, “Emp_No”, and
“Loan-out_date”.
c) The primary key of the employee table and
loan-out table is “Emp_No”.
d)The primary key of the document table and
loan-out table is “Doc_No”.

14. (DB) An investigation is done to contact the
employees who have not returned documents within two
weeks including the loan-out date. Which of the following
is the appropriate method of retrieving these employees?
a) Retrieving the records whose “Loan-out_date” in the
loan-out table is a null value and whose
“Return_date” is within two weeks from the
investigation date
b) Retrieving the records whose “Loan-out_date” in the
loan-out table is two weeks ago from the
investigation date or earlier
c) Retrieving the records whose “Return_date” in the
loan-out table is a null value and whose “Loan-
out_date” is two weeks ago from the investigation
date or earlier
d) Retrieving the records whose “Return_date” in the
loan-out table is a null value

Question E
Read the following description concerning the creation of a Web page, and
then answer questions Q15 through Q16.

Mr. D, a PR staff member at the town N store of a supermarket chain,
is working with Mr. E, a staff member in charge of the Web site of the
company’s headquarters, to create an introduction page for the town N
store. A questionnaire with a gift included is to be implemented with
the aim of increasing the number of visitors to the introduction page for
the town N store. Mr. D created a proposal for a gift page as shown in
Fig. 1 and consulted Mr. E.

Note: [ ] is an input area, is a button, and < > explains that a component
to be displayed or content to be displayed is omitted.
Fig. 1 Proposal for a gift page

Mr. E checked the proposal for a gift page and gave the
advice and instructions below to Mr. D.
[Main advice concerning design]
(1) Adopting an input method with ease of operation,
such as input by mouse
(2) Placing input areas and buttons in the order that
operations such as responding are easy to perform
(3) Using an input form depending on the data format in
order to prevent input errors

[Main instructions concerning creation]
(1) Creating the gift page in an HTML format file called
“ank01.html”, and transferring it to a specified directory on
the Web server
(2) Using a relative path to specify a file
(3) Making the file size of each photograph that is used
200 KB or less

15. (HI) Which of the following is the
appropriate method for creating the
Usage analysis table shown in Fig. 2?
a) Placing the “Submit” button at the very top of the
page so that the user does not forget to press it
b) Using a check box so that the user can choose
the “desired gift” with a click of a mouse
c) Using a radio button for “Sex” so that the user
can choose either “Male” or “Female”
d) Placing questionnaire items on the assumption
that the user responds to questions sequentially
from the top-right of the screen

16. (MM) Mr. D received permission from the
manufacturer of the gifts, and decided to scan
photographs of the gifts from the manufacturer’s
product catalog and then place these images on the gift
page. The photographs are scanned in a bitmap
format at a size of 2 inches high × 3 inches wide and in
24-bit color. The images are then edited with photo-
retouching software.
When compression of an image with the photo-
retouching software is not considered, which of the
following is the highest resolution in dpi (dots per inch)
for the image scanner that Mr. D can select in
accordance with Mr. E’s advice or instructions?
a) 60
b) 100
c) 300
d) 1,200

200 KB = 200 KB x 1,024 Bytes/KB = 200 x 1,024 Bytes
= 200 x 1,024 Bytes x 8 Bits/Byte
= 200 x 1,024 x 8 Bits

200 x 1,024 x 8 Bits / (24 Bits/dot) = 200 x 1,024 / 3 dots

(200 x 1,024 / 3) dots / (2 x 3) sq. inches
= 100 x 1,024 / 9 dots/sq.inches
= 11,377 dots/sq.inches

Square root (11,377 dots/sq.inches) = 106 dot/inch
= 106 dpi

Question F
Read the following description concerning member data analysis,
and then answer Q17.

Mr. A is an employee of a fitness center. He decides to analyze the
usage of the facility based on the data stored in the member
management system, using a database application on his PC. From
the Member table and the Check-in table with their structures shown
in Fig. 1, Mr. A retrieved the data for one month of usage by
members in the age groups of 20s through 50s.

Member table
Membership_number Member_name Sex Age

Check-in table
Membership_number Date Checkin_time

Fig. 1 Data structure of the Member table and the Check-in
table

Using the data retrieved from the Member and Check-in tables, Mr.
A created a Usage analysis table with the structure shown in Fig. 2.
Usage analysis table
Membership_number Member_name Sex Age Date Checkin_time
Fig. 2 Data structure of the Usage analysis table

Based on the Usage analysis table, Mr. A created a list showing the
number of visits by age group and sex, as shown below. The values
show the gross number of visits during the month.

Table Visit counts by age group and sex
Sex Age group Visit count (persons)
20s 56
30s 114
Male 40s 227
50s 295
Sub total 692
20s 100
30s 215
Female 40s 348
50s 227
Sub total 890

17. (DB) Which of the following is the
appropriate method for creating the
Usage analysis table shown in Fig. 2?
a)Join the Member table and the Check-in table
using Membership_number as a key.
b)Sort the Member table by Membership_number,
and then project from the Check-in table.
c) Select the Member table using
Membership_number of the Check-in table as a
key.
d)Sort the Check-in table by Membership_number,
and then select the Member table.

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