This CKA practice question tests your understanding of services and networking. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO statements about Ingress in Kubernetes are correct?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ingress can terminate TLS connections for backend Services.
Options A and D are correct. Ingress can provide name-based virtual hosting and TLS termination. Option B is false: Ingress does not provide Layer 4 load balancing; it operates at Layer 7. Option C is false: Ingress does not support gRPC directly without additional configuration. Option E is false: IngressClass is used to specify which controller to use, not to enable or disable.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Setting spec.ingressClassName to 'nginx' disables the default Ingress controller.
Why it's wrong here
IngressClassName selects an IngressClass, not disables the default.
✓
Ingress can terminate TLS connections for backend Services.
Why this is correct
Correct. Ingress can terminate TLS if a secret with certificate is provided.
Related concept
Static NAT maps one inside address to one outside address.
✗
Ingress natively supports gRPC services without any additional configuration.
Why it's wrong here
gRPC requires HTTP/2, which may need specific controller support.
✗
Ingress can provide Layer 4 (TCP/UDP) load balancing.
Why it's wrong here
Ingress is a Layer 7 resource and does not handle TCP/UDP.
✓
Ingress can route traffic to different Services based on the hostname in the HTTP Host header.
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKA question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CKA NAT questions on configuration and troubleshooting.
Services and Networking — This question tests Services and Networking — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Ingress can terminate TLS connections for backend Services. — Options A and D are correct. Ingress can provide name-based virtual hosting and TLS termination. Option B is false: Ingress does not provide Layer 4 load balancing; it operates at Layer 7. Option C is false: Ingress does not support gRPC directly without additional configuration. Option E is false: IngressClass is used to specify which controller to use, not to enable or disable.
What should I do if I get this CKA question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related CKA NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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