Q1. Which of the following statements is true about RAM?
(a) It retains data when the PC is turned off.
(b) It is a type of read/write memory.
(c) It contains startup instructions.
(d) It is a peripheral.
(e) It stands for Read Access Memory.
Q2. When a real-time telephone call between people is made over the Internet using computers, it is called __________.
(a) a chat session
(b) an e-mail
(c) an instant message
(d) Internet telephony
(e) None of these
Q3. Which part of the CPU coordinates all the activities of a computer system?
(a) Motherboard
(b) Coordination board
(c) Control unit
(d) Arithmetic and logic unit
(e) Memory
Q4. Which of the following has the smallest storage capacity?
(a) Zip disk
(b) Hard disc
(c) Floppy disc
(d) Data cartridge
(e) CD
Q5. What type of devices are CDs or DVDs?
(a) Input
(b) Output
(c) Software
(d) Storage
(e) Input/output
Q6. What is Telnet?
(a) Network or Telephones
(b) Television Network
(c) Remote Login
(d) All of these
(e) None of these
Q7. Which of the following is not a computer language?
(a) High-level language
(b) Machine language
(c) Low-level language
(d) Medium-level language
(e) All of the above
Q8. What type of technology allows you to use your finger, eye, or voice print to secure your information resources?
(a) Haptics
(b) Caves
(c) Biometrics
(d) RFID
(e) All of above
Q9. Flash drives are plugged into a (n):
(a) expansion slot
(b) serial port
(c) USB port
(d) drive bay
(e) All of the above
Q10. Hard disc drives are considered __________ storage.
(a) Flash
(b) Temporary
(c) Worthless
(d) Nonvolatile
(e) Volatile
Q11. A DVD is an example of a (n):
(a) Output device
(b) Hard disc
(c) Optical disc
(d) Solid-state storage device
(e) None of these
Q12. Which of the following approaches is used by the ER model?
(a) Top-down approach
(b) Bottom-up approach
(c) Both (a) and (b)
(d) Left-right approach
(e) None of these
Q13. Constraints are applied on:
(a) rows
(b) columns
(c) entire table
(d) entire database
(e) None of these
Q14. In the ER diagram, what does an ellipse represent?
(a) Entity set
(b) Relation between the entity set
(c) Attributes
(d) Link between the attributes and entity set
(e) None of these
Q15. In a database, a column in the table is also called _________.
(a) degree
(b) tuple
(c) entity
(d) attribute
(e) relations
Solutions
S1. Ans.(c)
Sol. RAM is a hardware component that helps to start a computer system by booting, as it contains the startup instructions.
S2. Ans. (d)
Sol. An Internet telephony service provider (ITSP) offers digital telecommunications services based on Voice over Internet Protocol (VoIP) that are provisioned via the Internet. ITSPs provide services to end-users directly or as whole-sale suppliers to other ITSPs.
S3. Ans.(a)
Sol. A motherboard is that part of a CPU which coordinates all the activities of a computer system. Various types of hardware are attached of the motherboard to facilitate these activities.
S4. Ans.(c)
Sol. A floppy disc was a storage device that has a very small storage capacity of only 1.44 MB. Due to small storage capacity and proneness to frequent damages, floppy discs vanished from the market.
S5. Ans.(d)
Sol. CDs and DVDs are used to write data on them. Even though compact, these devices can easily carry large volumes of data. That’s why they are known as storage devices.
S6. Ans.(c)
Sol. Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection.
S7. Ans.(d)
Sol. There is no such language as medium-level-language.
S8. Ans. (c)
Sol. Biometrics is the measurement and statistical analysis of people's physical and behavioral characteristics. The technology is mainly used for identification and access control, or for identifying individuals that are under surveillance.
S9. Ans.(c)
Sol. A flash drive is plugged into a USB port.
S10. Ans.(d)
Sol. Hard disc is a nonvolatile storage device, as the data that is saved on it is never lost on restart or sudden power break.
S11. Ans.(c)
Sol. A DVD is an optical disc. The data is read or written on the surface of the disc with the help of a laser beam.
S12. Ans.(a)
Sol. Entity Relationship (ER) model uses the top-down approach. The top-down approach states that all the aspects of a process are covered. The ER model represents the information in a top-down approach using symbols for entities, relationships and lines.
S13. Ans.(b)
Sol. Constraints are the special rules applied on the columns to discard users from entering invalid data in table columns.
S14. Ans.(c)
Sol. The ER diagram is a graphical representation of the logical structure of a database. In this diagram, different components are represented with different symbols. Common symbols include rectangles, ellipses, diamonds and lines, where a rectangle represents an entity, an ellipse represents an attribute, a diamond represents a relationship and a line represents a linking between the entity and attribute.
S15. Ans.(d)
Sol. In a table, a column is also known as a field or an attribute. Each field in a table is given a unique name and data type. A data type specifies the type of information that can be stored in the field.
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