The Linux Foundation CCA 問題練習

Question No : 1
Which options are available to connect Cilium-managed clusters with external networks? (Choose Two)

• A.Direct peerings with external networks using BGP
• B.Using NAT gateways for all outgoing traffic
• C.Deploying dedicated proxy servers within the cluster
• D.Implementing Cilium's native egress gateway

答えを確認する

正解:

Question No : 2
Which advantage does eBPF offer over traditional networking methods?

• A.Easier integration with legacy systems
• B.Lower resource consumption on network devices
• C.Higher performance due to kernel-level processing
• D.Simpler configuration through GUI tools

答えを確認する

正解:

Question No : 3
Which command in Cilium CLI is typically used to list the network policies applied to a specific pod or namespace?

• A.cilium policy get
• B.cilium status
• C.cilium monitor
• D.cilium connectivity test

答えを確認する

正解:

Question No : 4
Which of the following are true regarding Cilium Architecture? (Choose Two)

• A.Relies on traditional Linux networking stacks for data management
• B.Utilizes BPF (Berkeley Packet Filter) to dynamically change the behavior of the network nodes
• C.Connects with Kubernetes API to manage networking policies effectively
• D.Operates independently of the Kubernetes orchestration

答えを確認する

正解:

Question No : 5
How does Cilium handle network segmentation within a Kubernetes cluster?

• A.By using namespaces as the primary method for segmentation
• B.Through identity-based policies that decouple security from IP addresses
• C.By enforcing strict VLAN boundaries between pods
• D.By requiring manual configuration of IP blocks for each namespace

答えを確認する

正解:

Question No : 6
What are the key functionalities enabled by Cluster Mesh? (Choose Two)

• A.Automatic mirroring of service endpoints between clusters
• B.Direct access control management for each cluster node
• C.Cross-cluster traffic management with intelligent routing
• D.Centralized storage solutions across multiple clusters

答えを確認する

正解:

Question No : 7
What does the "Cilium CLI" primarily provide for Cilium in Kubernetes environments?

• A.An interface for configuring the Linux kernel
• B.A command-line interface for installing, managing, and monitoring Cilium
• C.A GUI for visualizing network policies
• D.A logging tool for Kubernetes events

答えを確認する

正解:

Question No : 8
What are the functionalities provided by the 'cilium config' command in the CLI? (Choose Two)

• A.Display current Cilium configuration
• B.Modify existing Cilium configuration parameters
• C.Install new Cilium components
• D.Generate a report on Cilium's health

答えを確認する

正解:

Question No : 9
Why is BGP preferred for managing external network connections in large-scale Kubernetes deployments?

• A.It supports high volumes of routing rules without performance degradation
• B.It automatically encrypts data sent over the network
• C.It is less complex than traditional static routing protocols
• D.It relies on fewer physical network interfaces

答えを確認する

正解:

Question No : 10
After modifying the Cilium configuration, which command should be run to apply the changes?

• A.cilium reload
• B.cilium apply-config
• C.cilium restart
• D.cilium deploy

答えを確認する

正解:

Question No : 11
Which component of Cilium is primarily responsible for interpreting and enforcing network policies?

• A.Cilium Agent
• B.Cilium Operator
• C.Cilium Envoy
• D.Cilium CLI

答えを確認する

正解:

Question No : 12
What does Hubble provide that is particularly useful for debugging network issues in a Kubernetes cluster?

• A.Real-time traffic visualization
• B.Centralized logging of Kubernetes events
• C.Automated cluster upgrades
• D.Enhanced pod scaling mechanisms

答えを確認する

正解:

Question No : 13
In terms of external connectivity, what functionality does Cilium's native egress gateway provide?

• A.It allows all external traffic to bypass Kubernetes services
• B.It routes all internal traffic through a single external IP
• C.It selectively directs traffic from specific pods to external destinations
• D.It encrypts all data leaving the cluster

答えを確認する

正解:

Question No : 14
Which command is used to install Hubble in a Cilium environment?

• A.hubble setup
• B.hubble install
• C.cilium hubble enable
• D.cilium hubble start

答えを確認する

正解:

Question No : 15
How does Cilium integrate with Kubernetes to manage network policies?

• A.By using Custom Resource Definitions (CRDs)
• B.Through direct manipulation of Kubernetes API server
• C.By injecting sidecar proxies into each pod
• D.By modifying the Linux kernel’s routing table

答えを確認する

正解: