12. Which among the below is not expansion slot in PC Motherboard?
A. PCIe
B. ISA
C. ATX
D. AGP
Ans: C
ATX is a power supply. PCIe, AGP, ISA are for expansion from processor.
AGP stands for Accelerated Graphics Port.
ISA stands for Industry Standard Architecture.
PCIe stands for peripheral component interconnect express
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13. Which among the below is more temperature dependant?
A. Germanium
B. Silicon
Ans: A
Germanium has higher varition of current with temperature
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14. What is the drelation between single ended impedance and differential impedance?
A. Z(Diff) <= 2 * Z(Single)
B. Z(Diff) <= 1 * Z(Single)
C. Z(Diff) >= 2 * Z(Single)
D. Z(Diff) = 2 * Z(Single) always
Ans: A
Z(Diff) <= 2 * Z(Single), The differential impedance is always smaller than twice the single ended impedance
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15. Which memory among the below needs cells to be refreshed?
A. SRAM
B. DRAM
Ans: B
DRAM stores data in a memory cell which includes a Transistor and Capacitor. This memory need to be refreshed regularly to reatin the data
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16. Which among the below is a Wi-Fi standard?
A. IEEE 802.15.1
B. IEEE 802.3
C. IEEE 802.11
D. IEEE 802.15.3
Ans: C
IEEE 802.11a to 802.11ax standards are for Wi-Fi
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17. Which among the below bus is used to connect External IO devices to Memory in ARM processor?
A. APB
B. AHB
Ans: A
APB stands for Advanced peripheral bus and connects memory to external IO devices in ARM processor.
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18. Which among the below has highest range?
A. IEEE 802.15.1
B. IEEE 802.15.3
C. IEEE 802.11
D. IEEE 802.15.4
Ans: C
WiFi among the wireless technologies has the highest range and is covered under the IEEE802.11 standard.
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