1
CompTIA Secure
Infrastructure Specialist
(CSIS) – Advanced
Practice Examination
v2.0 a well detailed one
written and
graded A+ upgraded
Title: Comprehensive Advanced Practice Examination for the CompTIA Secure Infrastructure
Specialist (CSIS) Certification – Version 2.0: 150 Mixed-Difficulty Multiple-Choice Questions
, 2
Covering Hardware Infrastructure, Network Architecture, Security Controls, Host Hardening,
Network Protection, and Incident Response Domains
Section 1: Hardware Infrastructure and Virtualization (Questions 1–25)
1. A server administrator is deploying a new virtualization host and needs to verify that the
processor supports hardware-assisted virtualization. Which CPU feature must be enabled in
the BIOS/UEFI?
A) Intel VT-x or AMD-V
B) Intel EPT or AMD NPT
C) Intel AES-NI
D) Intel TXT
-” detailed answer 100 % correct :-”A
Rationale: Intel VT-x (Virtualization Technology) and AMD-V are hardware-assisted virtualization
features that enable the CPU to efficiently support virtual machines by handling privileged
instructions and memory management. EPT/NPT are extended page table features for memory
virtualization, AES-NI accelerates encryption, and TXT provides trusted execution.
2. Which storage interface provides the highest theoretical throughput for enterprise NVMe
SSDs in a server environment?
A) SATA 3.0 (6 Gbps)
B) SAS 12 Gbps
C) PCIe 4.0 x16
D) PCIe 5.0 x4
-” detailed answer 100 % correct :-”D
Rationale: PCIe 5.0 x4 provides 16 GB/s (128 Gbps) bi-directional bandwidth, significantly
exceeding other options. NVMe SSDs use PCIe lanes directly. SATA 6 Gbps and SAS 12 Gbps are
limited by their protocols and interface speeds. PCIe 4.0 x16 provides 32 GB/s, but NVMe drives
typically use x4 lanes (8 GB/s for PCIe 4.0, 16 GB/s for PCIe 5.0).
3. A technician is troubleshooting a server that randomly powers off during high-load periods.
The server is in a rack with other densely packed servers. Which of the following is the MOST
likely cause?
, 3
A) Insufficient power capacity on the PDU
B) Thermal shutdown due to inadequate cooling
C) Faulty RAID controller battery
D) Memory module failure
-” detailed answer 100 % correct :-”B
Rationale: Random power-offs during high-load periods in a densely packed rack indicate
thermal issues. As CPU and component utilization increases, heat generation rises, potentially
triggering thermal shutdown if cooling is inadequate. Power capacity issues would affect initial
power-on, not load-dependent shutdowns.
4. Which technology allows a single physical server to host multiple operating system
instances by abstracting the underlying hardware?
A) Containerization
B) Hardware virtualization
C) Paravirtualization
D) Hypervisor
-” detailed answer 100 % correct :-”D
Rationale: A hypervisor (virtual machine monitor) is the software that abstracts physical
hardware and allows multiple operating systems to run concurrently on a single server. It
manages resource allocation and isolation between virtual machines. While hardware
virtualization enables this, the hypervisor is the actual component implementing it.
5. A server administrator is configuring a new storage array with eight 2TB drives. The
administrator needs maximum usable capacity with fault tolerance for one drive failure.
Which RAID level should be configured?
A) RAID 0
B) RAID 1
C) RAID 5
D) RAID 6
-” detailed answer 100 % correct :-”C
Rationale: RAID 5 with eight 2TB drives provides (8-1) × 2TB = 14TB usable capacity with
tolerance for a single drive failure. RAID 0 provides 16TB but no fault tolerance. RAID 1 with 8
, 4
drives would provide 8TB (mirroring). RAID 6 would provide (8-2) × 2TB = 12TB but tolerates
two drive failures.
6. Which hardware component manages communication between the CPU, memory, and
high-speed peripherals in a modern server architecture?
A) Southbridge
B) Northbridge
C) Platform Controller Hub (PCH)
D) I/O Controller Hub (ICH)
-” detailed answer 100 % correct :-”C
Rationale: In modern Intel architectures, the Platform Controller Hub (PCH) has replaced the
traditional Northbridge/Southbridge split. The PCH manages communication between the CPU
(via DMI or OPI), memory (via integrated memory controller in the CPU), and I/O devices
including PCIe, SATA, and USB.
7. A network technician is deploying a new fiber optic link between two buildings 2
kilometers apart. Which transceiver type should be used for a 10 Gbps connection?
A) SFP+ SR
B) SFP+ LR
C) QSFP+ SR4
D) XFP ER
-” detailed answer 100 % correct :-”B
Rationale: SFP+ LR (Long Range) supports distances up to 10 kilometers for 10 Gbps
connections over single-mode fiber, making it suitable for a 2-kilometer link. SFP+ SR (Short
Range) is limited to approximately 300 meters. QSFP+ SR4 is used for 40 Gbps, and XFP ER
supports up to 40 kilometers.
8. Which of the following describes the function of the Trusted Platform Module (TPM) in a
secure infrastructure?
A) It provides hardware-based encryption acceleration
B) It stores cryptographic keys securely and provides hardware root of trust
CompTIA Secure
Infrastructure Specialist
(CSIS) – Advanced
Practice Examination
v2.0 a well detailed one
written and
graded A+ upgraded
Title: Comprehensive Advanced Practice Examination for the CompTIA Secure Infrastructure
Specialist (CSIS) Certification – Version 2.0: 150 Mixed-Difficulty Multiple-Choice Questions
, 2
Covering Hardware Infrastructure, Network Architecture, Security Controls, Host Hardening,
Network Protection, and Incident Response Domains
Section 1: Hardware Infrastructure and Virtualization (Questions 1–25)
1. A server administrator is deploying a new virtualization host and needs to verify that the
processor supports hardware-assisted virtualization. Which CPU feature must be enabled in
the BIOS/UEFI?
A) Intel VT-x or AMD-V
B) Intel EPT or AMD NPT
C) Intel AES-NI
D) Intel TXT
-” detailed answer 100 % correct :-”A
Rationale: Intel VT-x (Virtualization Technology) and AMD-V are hardware-assisted virtualization
features that enable the CPU to efficiently support virtual machines by handling privileged
instructions and memory management. EPT/NPT are extended page table features for memory
virtualization, AES-NI accelerates encryption, and TXT provides trusted execution.
2. Which storage interface provides the highest theoretical throughput for enterprise NVMe
SSDs in a server environment?
A) SATA 3.0 (6 Gbps)
B) SAS 12 Gbps
C) PCIe 4.0 x16
D) PCIe 5.0 x4
-” detailed answer 100 % correct :-”D
Rationale: PCIe 5.0 x4 provides 16 GB/s (128 Gbps) bi-directional bandwidth, significantly
exceeding other options. NVMe SSDs use PCIe lanes directly. SATA 6 Gbps and SAS 12 Gbps are
limited by their protocols and interface speeds. PCIe 4.0 x16 provides 32 GB/s, but NVMe drives
typically use x4 lanes (8 GB/s for PCIe 4.0, 16 GB/s for PCIe 5.0).
3. A technician is troubleshooting a server that randomly powers off during high-load periods.
The server is in a rack with other densely packed servers. Which of the following is the MOST
likely cause?
, 3
A) Insufficient power capacity on the PDU
B) Thermal shutdown due to inadequate cooling
C) Faulty RAID controller battery
D) Memory module failure
-” detailed answer 100 % correct :-”B
Rationale: Random power-offs during high-load periods in a densely packed rack indicate
thermal issues. As CPU and component utilization increases, heat generation rises, potentially
triggering thermal shutdown if cooling is inadequate. Power capacity issues would affect initial
power-on, not load-dependent shutdowns.
4. Which technology allows a single physical server to host multiple operating system
instances by abstracting the underlying hardware?
A) Containerization
B) Hardware virtualization
C) Paravirtualization
D) Hypervisor
-” detailed answer 100 % correct :-”D
Rationale: A hypervisor (virtual machine monitor) is the software that abstracts physical
hardware and allows multiple operating systems to run concurrently on a single server. It
manages resource allocation and isolation between virtual machines. While hardware
virtualization enables this, the hypervisor is the actual component implementing it.
5. A server administrator is configuring a new storage array with eight 2TB drives. The
administrator needs maximum usable capacity with fault tolerance for one drive failure.
Which RAID level should be configured?
A) RAID 0
B) RAID 1
C) RAID 5
D) RAID 6
-” detailed answer 100 % correct :-”C
Rationale: RAID 5 with eight 2TB drives provides (8-1) × 2TB = 14TB usable capacity with
tolerance for a single drive failure. RAID 0 provides 16TB but no fault tolerance. RAID 1 with 8
, 4
drives would provide 8TB (mirroring). RAID 6 would provide (8-2) × 2TB = 12TB but tolerates
two drive failures.
6. Which hardware component manages communication between the CPU, memory, and
high-speed peripherals in a modern server architecture?
A) Southbridge
B) Northbridge
C) Platform Controller Hub (PCH)
D) I/O Controller Hub (ICH)
-” detailed answer 100 % correct :-”C
Rationale: In modern Intel architectures, the Platform Controller Hub (PCH) has replaced the
traditional Northbridge/Southbridge split. The PCH manages communication between the CPU
(via DMI or OPI), memory (via integrated memory controller in the CPU), and I/O devices
including PCIe, SATA, and USB.
7. A network technician is deploying a new fiber optic link between two buildings 2
kilometers apart. Which transceiver type should be used for a 10 Gbps connection?
A) SFP+ SR
B) SFP+ LR
C) QSFP+ SR4
D) XFP ER
-” detailed answer 100 % correct :-”B
Rationale: SFP+ LR (Long Range) supports distances up to 10 kilometers for 10 Gbps
connections over single-mode fiber, making it suitable for a 2-kilometer link. SFP+ SR (Short
Range) is limited to approximately 300 meters. QSFP+ SR4 is used for 40 Gbps, and XFP ER
supports up to 40 kilometers.
8. Which of the following describes the function of the Trusted Platform Module (TPM) in a
secure infrastructure?
A) It provides hardware-based encryption acceleration
B) It stores cryptographic keys securely and provides hardware root of trust
