MCQ Bank
You can use views in almost the same way as __________.
- A) Join
- B) Function
- C) Table
- D) Index
A/an ____________ is a collection of column information corresponding to a single record.
- A) Entity
- B) Attribute
- C) Table
- D) Row
A/an _________________ is a schema object that contains an entry for each value that appears in the column of the table or cluster and provides direct, fast access to rows.
- A) Index
- B) Cluster Table
- C) View
- D) Join
To alter an index, your schema must contain the index or you must have the ______________ system privilege.
- A) ANY INDEX ALTER
- B) ALTER ANY INDEX
- C) ALTER PRIVILEGE
- D) ALTER INDEX
Making an index ____________ is an alternative method to make it unusable or dropping it.
- A) MUTE
- B) INVISIBLE
- C) VISIBLE
- D) UNREADABLE
How many types of views are utilized to control table-related information?
- A) 3
- B) 5
- C) 2
- D) 4
_______________ statement is used to change or rebuild an existing index.
- A) ALTER INDEX
- B) REBUILD INDEX
- C) CHANGE INDEX
- D) UPDATE INDEX
Which of the following table statement is used to delete only the table structure from the database?
- A) Drop
- B) Update
- C) Delete
- D) Create
What is the purpose of the MUL instruction in the context of display memory?
- A) Performs unsigned multiplication
- B) Clears the screen
- C) Multiplies ASCII codes
- D) Controls cursor attributes
How is the screen location calculated (in the context of display memory formation)?
- A) Multiplying row number by 80 and adding column number
- B) Dividing row and column numbers
- C) Adding row and column numbers
- D) Using the MUL instruction
What does the attribute byte in the word designated for one screen location hold?
- A) Video controller instructions
- B) ASCII code for the character
- C) Cursor height information
- D) Foreground and background colors
Which of following interrupt is used for BIOS Video Services
- A) 0x13
- B) 0x10
- C) 0x16
- D) 0x21
How is the video device perceived by the computer in terms of memory?
- A) Independent of system memory
- B) Only accessible through I/O ports
- C) Two-dimensional space with ASCII codes
- D) Linearly mapped memory
Service numbers are given in ________ register while sub services in ________
- A) AH, AL or BL
- B) Ax, Bx
- C) Al, Ah or ax
- D) AX, Al or Ah
What effect does setting bit 7 in the attribute byte have on the foreground character (in the context of display memory)?
- A) Clears the screen
- B) Initiates blinking
- C) Intensity of foreground color
- D) Changes background color
While displaying something on screen, why is ES loaded with the segment of video memory?
- A) To open a window to the video memory
- B) To access data
- C) To manipulate ASCII codes
- D) To control cursor position
What is the significance of the memory location B8000 in the context of Display Memory?
- A) BIOS vendor's problem location
- B) Segment register for accessing video memory
- C) Physical memory location for video controller's memory
- D) Default cursor position
What is the purpose of sending 0x40 to the VGA card in the context of display memory formation?
- A) Change cursor position
- B) Set resolution
- C) Clear the screen
- D) Turn pixels on and off
How many I/O Ports are there?
- A) 65536
- B) 65524
- C) 65548
- D) 65520
Which of following jump would perform better to sort the signed numbers?
- A) jz
- B) jcx
- C) jge
- D) jle