30 FPGA Design questions from the VLSI Design bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
Free to start: the 2-minute ECE readiness check — six questions and a result.
A.compiling C/C++ with pragmas for pipelining, unrolling and interfaces into RTL, as in Vitis HLS, trading designer control for faster development
B.Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
C.Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
D.fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
Answer + AI explanation with Pro
2. Which term means: "fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table"?
Junior
A.LUT-based logic
B.Partial reconfiguration
C.Block RAM and DSP slices
D.Quartus Prime
Answer + AI explanation with Pro
3. Which statement is correct?
Junior
A.LUT-based logic — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
B.LUT-based logic — fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
C.LUT-based logic — Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
D.LUT-based logic — Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
Answer + AI explanation with Pro
4. What is Block RAM and DSP slices?
Junior
A.hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
B.fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
C.assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
D.meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
Answer + AI explanation with Pro
5. Which term means: "hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs"?
Junior
A.High-level synthesis
B.XDC constraints
C.IP integration
D.Block RAM and DSP slices
Answer + AI explanation with Pro
6. Which statement is correct?
Junior
A.Block RAM and DSP slices — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
B.Block RAM and DSP slices — hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
C.Block RAM and DSP slices — programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
D.Block RAM and DSP slices — assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
Answer + AI explanation with Pro
7. What is Vivado design flow?
Junior
A.Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
B.AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
C.fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
D.programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
Answer + AI explanation with Pro
8. Which term means: "AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs"?
Junior
A.Vivado design flow
B.FPGA versus ASIC decision
C.Block RAM and DSP slices
D.Quartus Prime
Answer + AI explanation with Pro
9. Which statement is correct?
Junior
A.Vivado design flow — compiling C/C++ with pragmas for pipelining, unrolling and interfaces into RTL, as in Vitis HLS, trading designer control for faster development
B.Vivado design flow — assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
C.Vivado design flow — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
D.Vivado design flow — programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
Answer + AI explanation with Pro
10. What is XDC constraints?
Mid
A.AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
B.fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
C.Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
D.hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
Answer + AI explanation with Pro
11. Which term means: "Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order"?
Mid
A.Partial reconfiguration
B.Vivado design flow
C.XDC constraints
D.FPGA versus ASIC decision
Answer + AI explanation with Pro
12. Which statement is correct?
Mid
A.XDC constraints — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
B.XDC constraints — Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
C.XDC constraints — hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
D.XDC constraints — reprogramming one region of the device with a partial bitstream while the rest keeps running, using reconfigurable partitions and decoupling logic at the boundary
Answer + AI explanation with Pro
13. What is Timing closure on FPGA?
Mid
A.reprogramming one region of the device with a partial bitstream while the rest keeps running, using reconfigurable partitions and decoupling logic at the boundary
B.assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
C.meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
D.Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
Answer + AI explanation with Pro
14. Which term means: "meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric"?
Mid
A.FPGA versus ASIC decision
B.Timing closure on FPGA
C.Partial reconfiguration
D.IP integration
Answer + AI explanation with Pro
15. Which statement is correct?
Mid
A.Timing closure on FPGA — fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
B.Timing closure on FPGA — meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
C.Timing closure on FPGA — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
D.Timing closure on FPGA — Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
Answer + AI explanation with Pro
16. What is Quartus Prime?
Mid
A.programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
B.meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
C.Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
D.Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
Answer + AI explanation with Pro
17. Which term means: "Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser"?
Mid
A.XDC constraints
B.Block RAM and DSP slices
C.Quartus Prime
D.IP integration
Answer + AI explanation with Pro
18. Which statement is correct?
Mid
A.Quartus Prime — Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
B.Quartus Prime — programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
C.Quartus Prime — hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
D.Quartus Prime — meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
Answer + AI explanation with Pro
19. What is IP integration?
Mid
A.assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
B.Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
C.AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
D.hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
Answer + AI explanation with Pro
20. Which term means: "assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking"?
Mid
A.XDC constraints
B.LUT-based logic
C.FPGA versus ASIC decision
D.IP integration
Answer + AI explanation with Pro
21. Which statement is correct?
Mid
A.IP integration — hard on-chip memories such as 36 Kb BRAM and UltraRAM plus multiply-accumulate blocks that implement buffers and arithmetic far more efficiently than LUTs
B.IP integration — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
C.IP integration — fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
D.IP integration — assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
Answer + AI explanation with Pro
22. What is High-level synthesis?
Mid
A.AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
B.programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
C.meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
D.compiling C/C++ with pragmas for pipelining, unrolling and interfaces into RTL, as in Vitis HLS, trading designer control for faster development
Answer + AI explanation with Pro
23. Which term means: "compiling C/C++ with pragmas for pipelining, unrolling and interfaces into RTL, as in Vitis HLS, trading designer control for faster development"?
Mid
A.Block RAM and DSP slices
B.FPGA versus ASIC decision
C.LUT-based logic
D.High-level synthesis
Answer + AI explanation with Pro
24. Which statement is correct?
Mid
A.High-level synthesis — fabric built from 6-input lookup tables plus flip-flops in slices or ALMs, implementing any function of the inputs through a small SRAM truth table
B.High-level synthesis — compiling C/C++ with pragmas for pipelining, unrolling and interfaces into RTL, as in Vitis HLS, trading designer control for faster development
C.High-level synthesis — Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
D.High-level synthesis — Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
Answer + AI explanation with Pro
25. What is Partial reconfiguration?
Senior
A.programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
B.reprogramming one region of the device with a partial bitstream while the rest keeps running, using reconfigurable partitions and decoupling logic at the boundary
C.Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
D.meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
Answer + AI explanation with Pro
26. Which term means: "reprogramming one region of the device with a partial bitstream while the rest keeps running, using reconfigurable partitions and decoupling logic at the boundary"?
Senior
A.High-level synthesis
B.Timing closure on FPGA
C.Partial reconfiguration
D.Quartus Prime
Answer + AI explanation with Pro
27. Which statement is correct?
Senior
A.Partial reconfiguration — reprogramming one region of the device with a partial bitstream while the rest keeps running, using reconfigurable partitions and decoupling logic at the boundary
B.Partial reconfiguration — Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
C.Partial reconfiguration — AMD Xilinx flow of synthesis, implementation (opt, place, route), bitstream generation and hardware manager, driven by Tcl or IP Integrator block designs
D.Partial reconfiguration — assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
Answer + AI explanation with Pro
28. What is FPGA versus ASIC decision?
Senior
A.assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
B.meeting WNS and WHS by pipelining, register duplication, fan-out reduction, floorplanning and physical optimisation, since routing resources are fixed by the fabric
C.Intel FPGA toolchain with Platform Designer for Avalon and AXI system integration, the Timing Analyzer and the Signal Tap embedded logic analyser
D.programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
Answer + AI explanation with Pro
29. Which term means: "programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised"?
Senior
A.Timing closure on FPGA
B.LUT-based logic
C.FPGA versus ASIC decision
D.High-level synthesis
Answer + AI explanation with Pro
30. Which statement is correct?
Senior
A.FPGA versus ASIC decision — Xilinx design constraints combining SDC-style timing with physical settings such as PACKAGE_PIN, IOSTANDARD and Pblocks, applied in a defined processing order
B.FPGA versus ASIC decision — assembling vendor and custom cores such as memory controllers, PCIe and AXI interconnect in a block design with automatic address mapping and interface checking
C.FPGA versus ASIC decision — programmable logic wins for low volume, field updates and time to market; ASIC wins for high volume, lower unit power and performance once NRE is amortised
D.FPGA versus ASIC decision — compiling C/C++ with pragmas for pipelining, unrolling and interfaces into RTL, as in Vitis HLS, trading designer control for faster development
Answer + AI explanation with Pro
Free to start
Start with a free readiness check
Sign up free for the 2-minute ECE readiness check and a scored result. Answers, explanations and the AI tutor on every FPGA Design question come with Pro.