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GIAC CERTIFICATION EXAM PRACTICE
QUESTIONS 2026/2027 QUESTIONS WITH
VERIFIED ANSWERS & COMPLETE
RATIONALES
**1. Which component of a computer is often referred to as the
"brain" because it performs calculations and executes
instructions?**
A. RAM (Random Access Memory)
B. GPU (Graphics Processing Unit)
C. CPU (Central Processing Unit)
D. ROM (Read-Only Memory)
**Correct answer:** C
**Rationale:** The CPU is the primary component that fetches,
decodes, and executes instructions. RAM provides temporary
data storage; the GPU handles graphics rendering; ROM is
non-volatile storage that retains data without power.
---
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**2. A technician needs to store data that must survive a power
outage without any battery backup. Which memory type is
BEST suited?**
A. RAM
B. Cache memory
C. ROM
D. Swap space
**Correct answer:** C
**Rationale:** ROM is non-volatile, meaning it retains data
without power. RAM and cache are volatile and lose their
contents when power is removed. Swap space is disk-based
virtual memory.
---
**3. A developer runs a program that immediately reads the
same dataset thousands of times per second. Which hardware
feature MOST directly speeds up repeated data access?**
A. Adding more RAM
B. Cache memory on the CPU
C. Upgrading to a faster hard drive
D. Increasing the GPU clock speed
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**Correct answer:** B
**Rationale:** Cache memory sits between the CPU and RAM,
storing frequently accessed data so the processor can retrieve
it in nanoseconds rather than waiting hundreds of nanoseconds
for main RAM.
---
**4. Which type of hypervisor runs DIRECTLY on the physical
hardware without requiring a host operating system?**
A. Type 2 (hosted) hypervisor
B. Container runtime
C. Type 1 (bare-metal) hypervisor
D. Paravirtualization adapter
**Correct answer:** C
**Rationale:** Type 1 hypervisors (e.g., VMware ESXi,
Microsoft Hyper-V Server, KVM) install directly on hardware
and manage guest VMs without a host OS. Type 2 hypervisors
run on top of a host OS.
---
GIAC CERTIFICATION EXAM PRACTICE
QUESTIONS 2026/2027 QUESTIONS WITH
VERIFIED ANSWERS & COMPLETE
RATIONALES
**1. Which component of a computer is often referred to as the
"brain" because it performs calculations and executes
instructions?**
A. RAM (Random Access Memory)
B. GPU (Graphics Processing Unit)
C. CPU (Central Processing Unit)
D. ROM (Read-Only Memory)
**Correct answer:** C
**Rationale:** The CPU is the primary component that fetches,
decodes, and executes instructions. RAM provides temporary
data storage; the GPU handles graphics rendering; ROM is
non-volatile storage that retains data without power.
---
,2 | Page
**2. A technician needs to store data that must survive a power
outage without any battery backup. Which memory type is
BEST suited?**
A. RAM
B. Cache memory
C. ROM
D. Swap space
**Correct answer:** C
**Rationale:** ROM is non-volatile, meaning it retains data
without power. RAM and cache are volatile and lose their
contents when power is removed. Swap space is disk-based
virtual memory.
---
**3. A developer runs a program that immediately reads the
same dataset thousands of times per second. Which hardware
feature MOST directly speeds up repeated data access?**
A. Adding more RAM
B. Cache memory on the CPU
C. Upgrading to a faster hard drive
D. Increasing the GPU clock speed
, 3 | Page
**Correct answer:** B
**Rationale:** Cache memory sits between the CPU and RAM,
storing frequently accessed data so the processor can retrieve
it in nanoseconds rather than waiting hundreds of nanoseconds
for main RAM.
---
**4. Which type of hypervisor runs DIRECTLY on the physical
hardware without requiring a host operating system?**
A. Type 2 (hosted) hypervisor
B. Container runtime
C. Type 1 (bare-metal) hypervisor
D. Paravirtualization adapter
**Correct answer:** C
**Rationale:** Type 1 hypervisors (e.g., VMware ESXi,
Microsoft Hyper-V Server, KVM) install directly on hardware
and manage guest VMs without a host OS. Type 2 hypervisors
run on top of a host OS.
---
