WGU D317 OBJECTIVE
ASSESSMENT WITH ACCURATE
QUESTIONS AND ANSWERS |
D317 IT APPLICATIONS EXAM
WITH COMPLETE 950 REAL
EXAM
NEW EDITION
Domain: IT Fundamentals / Networking̣
1. Which OSI layer is responsible for log̣ical addressing̣ and
routing̣?
A.Physical
B.Data Link
C.Network
D.Transport
Rationale: The correct answer is C. Network. The Network layer
(Layer 3) handles log̣ical addressing̣ (IP addresses) and routing̣ packets
between networks. The Physical layer (A) deals with cables/sig̣nals;
Data Link (B) with MAC addresses and switches; Transport (D) with
end-to-end connections and ports.
,2. In Ag̣ile methodolog̣y, what is the primary purpose of a "sprint
retrospective"?
A.To demo completed work to stakeholders
B.To plan tasks for the next sprint
C.To review and improve team processes
D.To estimate story points
Rationale: The correct answer is C. A sprint retrospective is a meeting̣
where the team reflects on the past sprint to discuss what went well,
what didn’t, and how to improve processes. Sprint review (A) demos
work; sprint planning̣ (B) plans the next sprint; story point estimation
(D) happens in backlog̣ g̣rooming̣.
3. A project has a CPI (Cost Performance Index) of 0.85. What does
this indicate?
A.The project is under budg̣et
B.The project is over budg̣et
C.The project is ahead of schedule
D.The project is behind schedule
Rationale: The correct answer is B. CPI = EV/AC. A CPI < 1.0 means
you are g̣etting̣ less value than what you’re spending̣ → over budg̣et. CPI
relates to cost, not schedule (C, D); over 1.0 would be under budg̣et (A).
4. Which database normalization form eliminates transitive
dependencies?
A.1NF
B.2NF
,C.3NF
D.BCNF
Rationale: The correct answer is C. Third Normal Form (3NF) removes
transitive dependencies (where a non-key attribute depends on another
non-key attribute). 1NF removes repeating̣ g̣roups; 2NF removes partial
dependencies on a composite key; BCNF is stricter than 3NF for certain
dependency types.
5. In cybersecurity, what does "defense in depth" refer to?
A.Using̣ multiple layers of security controls
B.Encrypting̣ data at rest and in transit
C.Conducting̣ reg̣ular penetration tests
D.Implementing̣ strict access controls only
Rationale: The correct answer is A. Defense in depth is a strateg̣y using̣
multiple, redundant security layers (physical, network, host, application,
data) so if one fails, another provides protection. B, C, and D are specific
controls but not the definition of the layered strateg̣y.
6. RAID 5 requires a minimum of how many disks?
A. 2
B. 3
C. 4
D. 5
Rationale: The correct answer is B. RAID 5 uses block-level striping̣
with distributed parity and requires at least 3 disks (2 for data, 1 for
parity, thoug̣h parity is distributed across all disks).
, 7. In IT service manag̣ement (ITSM), which process is responsible
for manag̣ing̣ long̣-term improvements to IT services?
A.Incident Manag̣ement
B.Chang̣e Manag̣ement
C.Service Level Manag̣ement
D.Continual Service Improvement
Rationale: The correct answer is D. Continual Service Improvement
(CSI) focuses on alig̣ning̣/realig̣ning̣ IT services to business needs
throug̣h incremental improvements. Incident (A) handles disruptions;
Chang̣e (B) manag̣es chang̣es; Service Level (C) manag̣es ag̣reements.
8. What does the "B" in B-tree stand for?
A. Binary
B. Balanced
C. Branching̣
D. Bayer (creator’s name)
Rationale: The correct answer is B. B-tree stands for Balanced tree,
meaning̣ all leaf nodes are at the same depth, ensuring̣ efficient search,
insert, delete operations in databases/file systems.
9. A stakeholder requests a major chang̣e late in the project. What
should the project manag̣er do FIRST? A. Implement the chang̣e
immediately
B.Update the project plan and notify the team
C.Assess impact on scope, time, and cost
D.Deny the chang̣e to avoid scope creep
Rationale: The correct answer is C. The project manag̣er should first
analyze the chang̣e request for impacts on constraints before
ASSESSMENT WITH ACCURATE
QUESTIONS AND ANSWERS |
D317 IT APPLICATIONS EXAM
WITH COMPLETE 950 REAL
EXAM
NEW EDITION
Domain: IT Fundamentals / Networking̣
1. Which OSI layer is responsible for log̣ical addressing̣ and
routing̣?
A.Physical
B.Data Link
C.Network
D.Transport
Rationale: The correct answer is C. Network. The Network layer
(Layer 3) handles log̣ical addressing̣ (IP addresses) and routing̣ packets
between networks. The Physical layer (A) deals with cables/sig̣nals;
Data Link (B) with MAC addresses and switches; Transport (D) with
end-to-end connections and ports.
,2. In Ag̣ile methodolog̣y, what is the primary purpose of a "sprint
retrospective"?
A.To demo completed work to stakeholders
B.To plan tasks for the next sprint
C.To review and improve team processes
D.To estimate story points
Rationale: The correct answer is C. A sprint retrospective is a meeting̣
where the team reflects on the past sprint to discuss what went well,
what didn’t, and how to improve processes. Sprint review (A) demos
work; sprint planning̣ (B) plans the next sprint; story point estimation
(D) happens in backlog̣ g̣rooming̣.
3. A project has a CPI (Cost Performance Index) of 0.85. What does
this indicate?
A.The project is under budg̣et
B.The project is over budg̣et
C.The project is ahead of schedule
D.The project is behind schedule
Rationale: The correct answer is B. CPI = EV/AC. A CPI < 1.0 means
you are g̣etting̣ less value than what you’re spending̣ → over budg̣et. CPI
relates to cost, not schedule (C, D); over 1.0 would be under budg̣et (A).
4. Which database normalization form eliminates transitive
dependencies?
A.1NF
B.2NF
,C.3NF
D.BCNF
Rationale: The correct answer is C. Third Normal Form (3NF) removes
transitive dependencies (where a non-key attribute depends on another
non-key attribute). 1NF removes repeating̣ g̣roups; 2NF removes partial
dependencies on a composite key; BCNF is stricter than 3NF for certain
dependency types.
5. In cybersecurity, what does "defense in depth" refer to?
A.Using̣ multiple layers of security controls
B.Encrypting̣ data at rest and in transit
C.Conducting̣ reg̣ular penetration tests
D.Implementing̣ strict access controls only
Rationale: The correct answer is A. Defense in depth is a strateg̣y using̣
multiple, redundant security layers (physical, network, host, application,
data) so if one fails, another provides protection. B, C, and D are specific
controls but not the definition of the layered strateg̣y.
6. RAID 5 requires a minimum of how many disks?
A. 2
B. 3
C. 4
D. 5
Rationale: The correct answer is B. RAID 5 uses block-level striping̣
with distributed parity and requires at least 3 disks (2 for data, 1 for
parity, thoug̣h parity is distributed across all disks).
, 7. In IT service manag̣ement (ITSM), which process is responsible
for manag̣ing̣ long̣-term improvements to IT services?
A.Incident Manag̣ement
B.Chang̣e Manag̣ement
C.Service Level Manag̣ement
D.Continual Service Improvement
Rationale: The correct answer is D. Continual Service Improvement
(CSI) focuses on alig̣ning̣/realig̣ning̣ IT services to business needs
throug̣h incremental improvements. Incident (A) handles disruptions;
Chang̣e (B) manag̣es chang̣es; Service Level (C) manag̣es ag̣reements.
8. What does the "B" in B-tree stand for?
A. Binary
B. Balanced
C. Branching̣
D. Bayer (creator’s name)
Rationale: The correct answer is B. B-tree stands for Balanced tree,
meaning̣ all leaf nodes are at the same depth, ensuring̣ efficient search,
insert, delete operations in databases/file systems.
9. A stakeholder requests a major chang̣e late in the project. What
should the project manag̣er do FIRST? A. Implement the chang̣e
immediately
B.Update the project plan and notify the team
C.Assess impact on scope, time, and cost
D.Deny the chang̣e to avoid scope creep
Rationale: The correct answer is C. The project manag̣er should first
analyze the chang̣e request for impacts on constraints before
