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Q. In an ER diagram, what does a diamond shape represent?
  • A. Entity
  • B. Attribute
  • C. Relationship
  • D. Weak entity
Q. In an ER model, how is a one-to-many relationship typically represented?
  • A. With a single line connecting two entities
  • B. With a crow's foot notation
  • C. With a dashed line
  • D. With a double line
Q. In an ER model, what does a circle represent?
  • A. An entity
  • B. An attribute
  • C. A relationship
  • D. A weak entity
Q. In an ER model, what does a diamond shape represent?
  • A. Entity
  • B. Attribute
  • C. Relationship
  • D. Weak Entity
Q. In an ER model, what does a solid line between two entities indicate?
  • A. A weak relationship
  • B. A strong relationship
  • C. A one-to-many relationship
  • D. A many-to-many relationship
Q. In an ER model, what does a solid line connecting two entities represent?
  • A. A weak relationship
  • B. A strong relationship
  • C. An attribute
  • D. A foreign key constraint
Q. In an ER model, what does a solid line represent?
  • A. A weak relationship
  • B. A strong relationship
  • C. An attribute
  • D. A derived attribute
Q. In an ER model, what does an entity represent?
  • A. A relationship
  • B. A table
  • C. A column
  • D. A constraint
Q. In an ER model, what is an attribute?
  • A. A relationship between entities
  • B. A property or characteristic of an entity
  • C. A unique identifier for an entity
  • D. A type of database operation
Q. In an integrated circuit, what does the term 'die' refer to?
  • A. The entire circuit board
  • B. The individual chip of silicon
  • C. The packaging of the IC
  • D. The power supply
Q. In an inverting amplifier, if the feedback resistor is 10k Ohm and the input resistor is 1k Ohm, what is the gain?
  • A. -10
  • B. -1
  • C. 1
  • D. 10
Q. In an MSI circuit, what is the typical number of gates integrated?
  • A. 1-10
  • B. 10-100
  • C. 100-1000
  • D. 1000-10000
Q. In an op-amp configured as a voltage follower in a series circuit, what is the output voltage compared to the input voltage?
  • A. Higher than the input voltage
  • B. Lower than the input voltage
  • C. Equal to the input voltage
  • D. Unpredictable
Q. In an op-amp configured as a voltage follower in a series circuit, what is the output voltage relative to the input voltage?
  • A. Higher than the input voltage
  • B. Lower than the input voltage
  • C. Equal to the input voltage
  • D. Inverted compared to the input voltage
Q. In an operational amplifier, what does the term 'common-mode rejection ratio' (CMRR) refer to?
  • A. The ability to reject noise
  • B. The ability to reject common-mode signals
  • C. The ratio of output to input voltage
  • D. The gain of the amplifier
Q. In an RC circuit, what does the time constant (τ) represent?
  • A. The time taken to charge or discharge the capacitor
  • B. The maximum voltage across the capacitor
  • C. The resistance of the circuit
  • D. The frequency of oscillation
Q. In an RL circuit, what does the time constant represent?
  • A. The time to charge the inductor
  • B. The time to discharge the inductor
  • C. The time to reach 63.2% of final value
  • D. The time to reach 100% of final value
Q. In an RLC series circuit, what is the effect of increasing the resistance on the bandwidth?
  • A. Bandwidth increases
  • B. Bandwidth decreases
  • C. Bandwidth remains the same
  • D. Bandwidth becomes zero
Q. In an SR Flip-Flop, what condition is considered invalid?
  • A. S=0, R=0
  • B. S=1, R=0
  • C. S=0, R=1
  • D. S=1, R=1
Q. In an SR flip-flop, what condition leads to an invalid state?
  • A. S=0, R=0
  • B. S=1, R=0
  • C. S=0, R=1
  • D. S=1, R=1
Q. In astable mode, how many output states does a 555 timer have?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. In database architecture, what is the purpose of a data dictionary?
  • A. To store user data
  • B. To define the structure of the database
  • C. To manage transactions
  • D. To optimize queries
Q. In database transactions, what does ACID stand for?
  • A. Atomicity, Consistency, Isolation, Durability
  • B. Atomicity, Concurrency, Integrity, Durability
  • C. Atomicity, Consistency, Isolation, Data
  • D. Atomicity, Consistency, Isolation, Dependency
Q. In DBMS architecture, what does the term 'data independence' refer to?
  • A. The ability to change the data structure without affecting the application
  • B. The separation of data and application logic
  • C. The ability to access data from multiple sources
  • D. The use of multiple databases
Q. In DBMS architecture, what does the term 'physical data independence' refer to?
  • A. The ability to change the logical schema without changing the physical schema
  • B. The ability to change the physical storage without affecting the logical schema
  • C. The ability to access data from multiple sources
  • D. The ability to enforce security measures
Q. In DBMS architecture, what is the purpose of the data abstraction layer?
  • A. To manage user access
  • B. To provide a user interface
  • C. To separate physical storage from logical data structures
  • D. To optimize query performance
Q. In digital circuits, what does the term 'logic level' refer to?
  • A. Voltage levels
  • B. Frequency levels
  • C. Temperature levels
  • D. Current levels
Q. In digital circuits, what does the term 'two's complement' refer to?
  • A. A method for binary addition
  • B. A method for binary subtraction
  • C. A way to represent negative numbers
  • D. A type of logic gate
Q. In digital design, what does FPGA stand for?
  • A. Field Programmable Gate Array
  • B. Fast Programmable Gate Array
  • C. Field Programmable General Array
  • D. Fixed Programmable Gate Array
Q. In digital signal processing, what is aliasing?
  • A. Loss of data during transmission
  • B. Distortion that occurs when a signal is undersampled
  • C. The process of converting digital to analog
  • D. A method of noise reduction
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