Technical

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Q. According to Ohm's Law, if the resistance in a circuit is doubled while keeping the voltage constant, what happens to the current?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It becomes zero
Q. For a FET, what is the effect of increasing gate voltage on the drain current?
  • A. Drain current decreases
  • B. Drain current remains constant
  • C. Drain current increases
  • D. Drain current becomes zero
Q. For a parallel circuit with two identical resistors, the total current is:
  • A. Half of the current through one resistor
  • B. Equal to the current through one resistor
  • C. Twice the current through one resistor
  • D. Zero
Q. How can ADO.NET handle concurrency when working with XML data?
  • A. By using optimistic concurrency control
  • B. By locking the XML file during access
  • C. By using a transaction log
  • D. By serializing all access to the XML data
Q. How does a switch handle VLAN tagging?
  • A. By using MAC addresses
  • B. By using IP addresses
  • C. By using 802.1Q tags
  • D. By using ARP requests
Q. How does increasing resistance in an RC circuit affect the time response?
  • A. Increases time constant
  • B. Decreases time constant
  • C. No effect
  • D. Increases voltage
Q. How does IPv6 handle packet fragmentation?
  • A. Only the sender can fragment packets
  • B. Intermediate routers can fragment packets
  • C. Fragmentation is not allowed in IPv6
  • D. Fragmentation is handled by NAT
Q. How does IPv6 handle packet fragmentation?
  • A. Only the sender can fragment packets
  • B. Intermediate routers can fragment packets
  • C. Fragmentation is not allowed in IPv6
  • D. Fragmentation is handled by NAT
Q. How does IPv6 handle packet fragmentation?
  • A. Only the sender can fragment packets
  • B. Intermediate routers can fragment packets
  • C. Fragmentation is not allowed in IPv6
  • D. Fragmentation is handled by NAT
Q. How does NAT affect the use of IPsec?
  • A. It has no effect on IPsec
  • B. It can break IPsec connections
  • C. It enhances IPsec security
  • D. It simplifies IPsec configuration
Q. How does temperature affect the performance of a diode in a series-parallel circuit?
  • A. Increases forward voltage drop
  • B. Decreases reverse leakage current
  • C. Increases reverse breakdown voltage
  • D. Decreases forward current
Q. How does the current through each component in a parallel circuit relate to the total current?
  • A. It is equal to the total current
  • B. It is less than the total current
  • C. It is greater than the total current
  • D. It is independent of the total current
Q. How does the time response of an RL circuit differ from that of an RC circuit?
  • A. RL is faster than RC
  • B. RC is faster than RL
  • C. Both are the same
  • D. Depends on values of R and L
Q. How does the total resistance change in a series-parallel circuit when more resistors are added in parallel?
  • A. Total resistance increases
  • B. Total resistance decreases
  • C. Total resistance remains the same
  • D. Total resistance becomes infinite
Q. How many 16-bit timers/counters are available in the 8051 microcontroller?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. How many 8-bit registers does the 8051 microcontroller have?
  • A. 4
  • B. 8
  • C. 32
  • D. 16
Q. How many bits are in a byte?
  • A. 4
  • B. 8
  • C. 16
  • D. 32
Q. How many external interrupts does the 8051 support?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Q. How many inputs can an Ex-OR gate have?
  • A. 1
  • B. 2
  • C. 3
  • D. Any number
Q. How many outputs does an 8-to-1 multiplexer have?
  • A. 1
  • B. 2
  • C. 8
  • D. 16
Q. How many select lines are needed for a 16-to-1 multiplexer?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. How many states does a 3-bit counter have?
  • A. 4
  • B. 6
  • C. 8
  • D. 16
Q. How many subnets can be created from a Class C network using a /28 subnet mask?
  • A. 2
  • B. 4
  • C. 16
  • D. 32
Q. If A = 1 and B = 0, what is the output of A XOR B?
  • A. 0
  • B. 1
  • C. 2
  • D. 3
Q. If a diode is forward-biased, what is the expected behavior according to Ohm's Law?
  • A. It behaves like an open circuit
  • B. It behaves like a short circuit
  • C. It has infinite resistance
  • D. It has zero voltage drop
Q. If A is true and B is true, what is the output of A OR B?
  • A. True
  • B. False
  • C. 1
  • D. 0
Q. If a network has a subnet mask of /22, how many hosts can it support?
  • A. 1022
  • B. 1024
  • C. 2046
  • D. 2048
Q. If A=0 and B=1, what is the output of an Ex-NOR gate?
  • A. 1
  • B. 0
  • C. Undefined
  • D. Both 0 and 1
Q. If two resistors are connected in parallel, how do you calculate the total resistance?
  • A. R_total = R1 + R2
  • B. R_total = 1 / (1/R1 + 1/R2)
  • C. R_total = R1 * R2
  • D. R_total = R1 - R2
Q. If two resistors are connected in parallel, the total resistance is:
  • A. Greater than the smallest resistor
  • B. Equal to the smallest resistor
  • C. Less than the smallest resistor
  • D. Equal to the sum of the resistances
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