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2013年11月29日星期五

CIW certification 1D0-510 the latest examination questions and answers come out

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NO.1 Which of the following IP addresses is invalid?
A. 224.199.23.3
B. 24.256.54.255
C. 177.138.23.89
D. 182.255.254.115
Answer: B

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NO.2 Which choice lists the three image file formats that are universally supported by modern Web
browsers?
A. BMP, TIFF and GIF
B. PNG, GIF and BMP
C. GIF, JPEG and BMP
D. GIF, JPEG and PNG
Answer: D

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NO.3 As an IT professional, you must always consider the Return on Investment (ROI) impact that IT
projects have on your organization. You may be required to justify a project's benefits relative to its cost.
What must you do to relate such information about IT projects to upper managers?
A. Explain decisions in purely technical terms to ensure that the issues are properly understood.
B. Make decisions without input from management so as not to confuse the managers or stakeholders.
C. Consult only managers who have technical experience so that the project benefits will be fully
understood.
D. Put the information in terms that your managers can understand so that they can make informed
decisions.
Answer: D

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NO.4 What is spyware?
A. Software that reports security holes to hackers
B. Software that gathers information and relays it to outside parties
C. Software that determines and reports improper software licensing
D. Software that opens an undocumented port on your server and allows attackers to control your system
Answer: B

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NO.5 Which of the following accurately describes a difference between GIF images and JPEG images?
A. GIF images support the transparency technique, whereas JPEG images do not.
B. GIF images support millions of colors, whereas JPEG images support only 256 colors.
C. JPEG images use vector graphics, whereas GIF images use bitmap or raster graphics.
D. JPEG images support interlacing and animation techniques, whereas GIF images do not.
Answer:A

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NO.6 Which protocol is most likely to be used when sending e-mail using the Microsoft Outlook Express
client?
A. IMAP
B. HTTP
C. SMTP
D. POP3
Answer: C

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NO.7 Which type of encryption uses a pair of keys, in which one key is used to encrypt information and the
other key is used to decrypt that information?
A. Hash encryption
B. One-way encryption
C. Symmetric encryption
D. Asymmetric encryption
Answer: D

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NO.8 Which choice lists computer peripheral port standards that require only one IRQ and are used to
connect multiple high-speed devices?
A. USB and PS/2
B. USB and UART
C. IEEE 1394 and USB
D. IEEE 1394 and IEEE 1284
Answer: C

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NO.9 Your company is outsourcing some content development tasks. The contractors who work on these
projects will see some of your company's proprietary content before it is available to customers. Your
company needs to ensure that this trade-secret content is kept confidential by the contractors who see it.
Which of the following protects your intellectual property in this situation?
A. Copyright
B. Trademark
C. License agreement
D. Non-disclosure agreement
Answer: D

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NO.10 Lars has difficulty when he tries to access some Web pages. He suspects that his browser has a
problem or a bug. Which of the following should he consider downloading?
A. Apatch
B. A firewall
C. A pop-up blocker
D. An anti-virus program
Answer:A

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NO.11 In the client/server model, a client can access information from any server if:
A. both the client and server understand the protocol.
B. both the client and the LAN understand the protocol.
C. both the LAN and the WAN understand the protocol.
D. both the server and the LAN understand the protocol.
Answer:A

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NO.12 Lisa has programmed her company's router to recognize several internal networks. Which job title best
describes her responsibilities?
A. Network engineer
B. Security manager
C. Server administrator
D. Help desk technician
Answer:A

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NO.13 You need to register a domain name for the Web sites that will promote your company's new product
in international markets. You decide to register several top-level domains, such as .ca, .au and .ae, in
addition to the commonly used .com domain. Why would you do this?
A. To appeal to the national identities of your customers
B. To make it easier for search engines to find your Web site
C. To ensure that you can sell your product legally in various countries
D. To ensure that customers remember the spelling of your product name
Answer:A

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NO.14 Which term describes a server at the highest level of the Domain Name System (DNS)?
A. Master
B. Primary
C. Top level
D. Root level
Answer: D

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NO.15 Which of the following is the most popular protocol that provides authentication and encryption for
secure exchanges over the Internet?
A. Secure Sockets Layer (SSL)
B. Public Key Infrastructure (PKI)
C. Electronic Data Interchange (EDI)
D. Secure Electronic Transactions (SET)
Answer:A

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NO.16 Rolf's Web site does not meet the W3C's Web Content Accessibility Guidelines (WCAG). To make his
site more accessible according to WCAG, which change could he make?
A. Remove all tables from site pages
B. Add a disclaimer to the home page
C. Create a text-only version of the site
D. Add more images and decrease text
Answer: C

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NO.17 What is an intranet?
A. A searchable internal repository that stores an organization's proprietary documents
B. A worldwide network available to anyone who has a TCP/IP connection on a computer
C. A TCP/IP-based network accessible only by an organization's members and employees
D. A TCP/IP-based network accessible only by an organization's internal employees and select external
clients
Answer: C

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NO.18 Which of the following is required for a wireless network to run in infrastructure mode?
A. Abridge
B. A switch
C. A wireless access point (WAP)
D. Wireless Equivalency Privacy (WEP)
Answer: C

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NO.19 You have been asked to determine the download time for pages on your site. One page consists of the
XHTML document, several image files, and a Flash presentation. These elements equal 84 kilobytes (KB)
total. How long will it take for this page to be downloaded by a user with an Internet connection speed of
33.6 kilobits per second (Kbps)?
A. Approximately 5 seconds
B. Approximately 15 seconds
C. Approximately 20 seconds
D. Approximately 55 seconds
Answer: C

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NO.20 When creating its Web presence, a business should choose its domain name carefully so that users
will be able to recall it easily. Every domain name is unique. With which of the following must each domain
name be registered?
A. DNS
B. W3C
C. FQDN
D. ICANN
Answer: D

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2013年10月14日星期一

Latest CIW 1D0-541 of exam practice questions and answers

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NO.1 Which of the following occurs in a relation when records are added or removed?
A.The number of domains changes.
B.The attributes in the table change.
C.The cardinality of the relation is fixed but the degree varies.
D.The degree of the relation is fixed but the cardinality varies.
Answer:D

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NO.2 Consider the Information Engineering diagram in the exhibit showing a conceptual data model of the
relations BUILDING and RESIDENT. What is the next step in refining the data model?
A.Create intermediate entities.
B.Create a logical data model.
C.Resolve many-to-many relationahips.
D.Identify and resolve complex relationships.
Answer:B

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NO.3 Which characteristic is an advantage of a database management system?
A.Data files are owned and maintained by the users.
B.Database administration is simplified.
C.A standard method can be used to access the database.
D.Data is decentralized.
Answer:C

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NO.4 Consider the following relation definitions: STUDENT( Student_Number: integer NOT NULL Name:
variable length character string length 20 ) Primary Key Student_Number HOUSING( Housing_ID: integer
NOT NULL Student_Number: integer NOT NULL Building: variable length character string length 25 )
Primary Key Housing_ID Foreign Key Student_Number References STUDENT(Student_Number) ON
DELETE NO ACTION ON UPDATE CASCADE What are the referential constraints for the relations
defined in these relation definitions?
A.There is no relationship between changes in STUDENT(Student_Number) and
HOUSING(Student_Number).
B.When STUDENT(Student_Number) is changed or deleted, this modification or deletion will
automatically be reflected in HOUSING(Student_Number).
C.Modifications to HOUSING(Student_Number) are automatically reflected in changes to
STUDENT(Student_Number), but deletions are not permitted.
D.Modifications to STUDENT(Student_Number) are automatically reflected in changes to
HOUSING(Student_Number). For a deletion to occur from STUDENT(Student_Number), it must first
occur in HOUSING(Student_Number).
Answer:D

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NO.5 The exhibit shows a table called Student Relation that tracks all information related to a students
courses, professors and sites. What would be the consequence of removing all records for a student with
the ID 1311?
A.Only an update anomaly would occur.
B.An insertion anomaly would occur.
C.A deletion anomaly would occur.
D.An update anomaly and a deletion anomaly would occur.
Answer:C

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NO.6 Consider the Recreation relation in the exhibit. A data operation that changes one of the tuples for
Student_ID 1003 must be performed. It is necessary to change one of the activities from swimming to
tennis. The Student_ID and Activity attributes make up the primary key for the Recreation relation. All
related information must be altered, as well. Which SQL statement or statements would best accomplish
this?
A.UPDATE Recreation SET Activity, Activity_Fee ('Tennis', 100) WHERE Student_ID = 1003;
B.UPDATE TABLE Recreation SET ACTIVITY = 'Tennis', Activity_Fee = 100 WHERE Student_ID = 1003
AND Activity = Swimming;
C.UPDATE Recreation SET Activity = 'Tennis', Activity_Fee = 100 WHERE Student_ID = 1003 AND
Activity = 'Swimming';
D.DELETE Activity FROM Recreation WHERE Student_ID = 1003; INSERT INTO Recreation VALUES
(1003, 'Tennis', 100);
Answer:C

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NO.7 Which of the following describes two desirable characteristics of a primary key?
A.A primary key should be a value that may be null and may change over time.
B.A primary key should be a value that is not null and will never change.
C.A primary key should consist of meaningful data and a value that can be changed if needed.
D.A primary key should not consist of meaningful data and a value that can be changed if needed.
Answer:B

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NO.8 Which pair of relational algebraic operations requires union compatibility?
A.Projection and Cartesian product
B.Selection and projection
C.Intersection and difference
D.Cartesian product and intersection
Answer:C

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NO.9 Which process is used to prevent the current database operation from reading or writing a data item
while that data item is being accessed by another operation?
A.Lock
B.Deadlock
C.Timestamp
D.Batch
Answer:A

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NO.10 Consider the following four database design activities: 1 - Design user views. 2 - Select a DBMS. 3 -
Apply normalization. 4 - Determine entities. Which choice shows the correct ordering of these activities,
from first to last, by assigned numbers?
A.1, 2, 3, 4
B.3, 4, 1, 2
C.4, 1, 3, 2
D.4, 2, 3, 1
Answer:D

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NO.11 Which relational algebraic operation is used to select specific columns (attributes) from a relation?
A.Union
B.Difference
C.Projection
D.Intersection
Answer:C

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NO.12 What is the highest normal form of the relation(s) shown in the exhibit?
A.Second normal form
B.First normal form
C.Boyce-Codd normal form
D.Third normal form
Answer:A

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NO.13 Consider the following relation definition: STUDENT( Student_Number: integer NOT NULL Name:
variable length character string length 20 NOT NULL) Primary Key Student_Number
HOUSING( Housing_ID: integer NOT NULL Student_Number: integer NOT NULL Building: variable
length character string length 25 NOT NULL) Primary Key Housing_ID Foreign Key Student_Number
References STUDENT(Student_Number) ON DELETE NO CHECK ON UPDATE Which integrity
constraint is violated in this relation definition?
A.Entity integrity
B.Domain constraint
C.Referential integrity
D.Enterprise constraint
Answer:C

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NO.14 Which of the following best describes the information contained in the data dictionary (or system
catalog)?
A.Metadata
B.Data model
C.Table data
D.Metafile
Answer:A

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NO.15 Which of the following best describes a composite key?
A.A composite key is a primary key and foreign key that consists of the first two attributes of a relation.
B.A composite key is a primary or foreign key defined by its parent key attributes.
C.A composite key is a foreign key that consists of the same attributes as the primary key from a related
table.
D.A composite key is a primary or foreign key that consists of two or more attributes of a relation.
Answer:D

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NO.16 Consider the Registration relation shown in the exhibit. Which of the following SQL statements would
return all tuples that have course codes beginning with the letter M?
A.SELECT * FROM Registration WHERE Course_Code = M#;
B.SELECT * FROM Registration WHERE Course_Code LIKE M_;
C.SELECT * FROM Registration WHERE Course_Code LIKE M%;
D.SELECT * FROM Registration WHERE Course_Code = M%;
Answer:C

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NO.17 Consider the entity-relation (ER) diagram shown in the exhibit. When the logical database design phase
is completed, which of the following is a valid DBDL description of the base relations for the ER diagram?
A.STUDENT( Student_Number: integer NOT NULL Name: variable length character string length 20 NOT
NULL) Primary Key Student_Number CLASS( Class_Num: integer NOT NULL Class_Name: integer NOT
NULL) Primary Key Class_Num
B.STUDENT( Student_Number: integer NOT NULL Name: variable length character string length 20 NOT
NULL) Primary Key Student_Number CLASS( Class_Num: integer NOT NULL Class_Name: integer NOT
NULL) Primary Key Class_Num Foreign Key Class_Num References STUDENT
C.STUDENT( Student_Number: integer NOT NULL Name: variable length character string length 20 NOT
NULL) Primary Key Student_Number STU_CLASS( Student_Number: integer NOT NULL Class_Num:
integer NOT NULL) Primary Key Student_Number CLASS( Class_Num: integer NOT NULL Class_Name:
integer NOT NULL) Primary Key Class_Num
D.STUDENT( Student_Number: integer NOT NULL Name: variable length character string length 20 NOT
NULL) Primary Key Student_Number STU_CLASS( Student_Number: integer NOT NULL Class_Num:
integer NOT NULL) Primary Key Student_Number CLASS( Class_Num: integer NOT NULL Class_Name:
integer NOT NULL) Primary Key Class_Num
Answer:D

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NO.18 Your enterprise is involved in planning a database project. The exhibit shows the result of one phase of
the database design life cycle. Which term best describes the diagram shown in the exhibit?
A.Information Engineering (IE) data model
B.Corporate data model
C.Database requirements model
D.Entity Relation Data (ERD) model
Answer:B

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NO.19 Consider the following SQL statement and the Orders relation shown in the exhibit: What is the output
of this SQL statement? Answer & Explanation Correct Answer C Explanations No more information
available
Answer:

NO.20 Consider the following relations shown in the exhibit. Which of the following SQL statements would
return the Customers2 relation from the Customers relation?
A.SELECT * FROM Customers WHERE Satisfaction_Rate <= 80 OR Satisfaction_Rate >= 90;
B.SELECT * FROM Customers WHERE Satisfaction_Rate IN (80 AND 90);
C.SELECT * FROM Customers WHERE Satisfaction_Rate >= 80 AND Satisfaction_Rate <= 89;
D.SELECT * FROM Customers WHERE Satisfaction_Rate BETWEEN (80, 90);
Answer:C

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