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NEW QUESTION # 31
Which component of an SDN architecture is responsible for configuring and maintaining devices and their state?
- A. the operational plane
- B. the data plane
- C. the management plane
- D. the forwarding plane
Answer: C
Explanation:
The management plane in an SDN architecture is responsible for configuring and maintaining devices and their state. It provides the functions that manage the network, such as configuration, monitoring, and management of network devices. It is the layer of the network that carries administrative traffic, which is used for the network management.
NEW QUESTION # 32
Which two statements about overlay virtual networks are true? (Choose two.)
- A. Overlay virtual networks use Juniper proprietary protocols.
- B. Overlay virtual networks work well on an IP spine-and-leaf topology.
- C. Overlay virtual networks only allow Layer 3 communication.
- D. Overlay virtual networks allow both Layer 2 and Layer 3 communication.
Answer: B,D
Explanation:
Overlay virtual networks are virtual logical networks constructed on top of an existing network using network virtualization technologies. They decouple network services from the physical networking and interconnection technologies on the underlay network. Two true statements about overlay virtual networks are:
Overlay virtual networks work well on an IP spine-and-leaf topology. They can be created over underlay networks using network virtualization technologies.
Overlay virtual networks allow both Layer 2 and Layer 3 communication. They can serve not only different services (such as multiple departments) of the same tenant but also different tenants.
NEW QUESTION # 33
Which two statements are correct about containers? (Choose two.)
- A. Containers include the entire operating system.
- B. Containers require an underlying operating system.
- C. Containers have faster boot times than VMs. www*
- D. Containers reduce deployment efficiency.
Answer: B,C
Explanation:
Containers are lightweight because they don't need the extra load of a hypervisor, but run directly within the host machine's kernel. This means they start up almost instantly and use less RAM.
Images are constructed from layered filesystems and share common files, making disk usage and image downloads much more efficient. Containers are isolated from each other and the host system. They have their own filesystem and networking, and can be constrained to not allow root access outside the container. They run on top of a host operating system.
NEW QUESTION # 34
Which cloud service model provides access to networking, storage, servers, and virtualization in a cloud environment?
- A. Software as a Service (Saa)
- B. Database as a Service (Daa)
- C. Platform as a Service (Paa)
- D. Infrastructure as a Service (laaS)
Answer: D
Explanation:
Infrastructure as a Service (IaaS) is a cloud service model that provides access to networking, storage, servers, and virtualization in a cloud environment.
NEW QUESTION # 35
Which OpenStack service provides API client authentication?
- A. iHeat
- B. Keystone
- C. Nova
- D. Neutron
Answer: B
Explanation:
Keystone is an OpenStack service that provides API client authentication. It provides API client authentication, service discovery, and distributed multi-tenant authorization by implementing OpenStack's Identity API.
NEW QUESTION # 36
Which two statements about Kubernetes are correct? (Choose two.)
- A. A ClusterlP service exposes pods to internal traffic only.
- B. All containers within a pod share the same IP address.
- C. Each container within a pod has a unique IP address.
- D. A ClusterlP service exposes pods to internal and external traffic.
Answer: A,B
Explanation:
In Kubernetes, all containers within a pod share the same IP address. A ClusterIP service exposes pods to internal traffic only.
NEW QUESTION # 37
Your business has optimized its applications to leverage a cloud-native microservices-based architecture.
In this architecture, how do the various modules of an application communicate?
- A. Application modules communicate through interprocess communication
- B. Application modules communicate through remote direct memory access
- C. Application modules communicate through application programming interface (API) calls.
- D. Application modules communicate through shared data structures (DB/files).
Answer: C
Explanation:
In a cloud-native microservices-based architecture, the various modules of an application communicate through application programming interface (API) calls. Each service is autonomous and self-contained and runs a unique process.
NEW QUESTION # 38
The openstack user list command uses which OpenStack service?
- A. Cinder
- B. Keystone
- C. Nova
- D. Neutron
Answer: B
Explanation:
The openstack user list command uses the Keystone service, which is the identity service for OpenStack. Keystone provides authentication, authorization, and service discovery for OpenStack. It also manages projects, users, roles, and endpoints for the OpenStack services.
NEW QUESTION # 39
Which cloud automation tool uses YAML playbooks to install software and tools on servers?
- A. Heat
- B. Ansible
- C. Python
- D. Terraform
Answer: B
Explanation:
According to the Ansible documentation4, Ansible playbooks are "automation blueprints, in YAML format, that Ansible uses to deploy and configure nodes in an inventory". Other cloud automation tools that are mentioned in the question are Terraform, which uses HCL (HashiCorp Configuration Language) or JSON files to provision infrastructure resources; Python, which is a general-purpose programming language that can be used for various automation tasks; and Heat, which is an orchestration service for OpenStack that uses HOT (Heat Orchestration Template) or CFN (AWS CloudFormation) formats to describe stacks of cloud resources.
NEW QUESTION # 40
What is an OpenShift route?
- A. It provisions endpoints for a service.
- B. It provisions external access to a service.
- C. It allows pods to communicate across clusters.
- D. It allows pods to communicate across namespaces.
Answer: B
Explanation:
An OpenShift route is a way to provision external access to a service. A route exposes a service at a host name, such as www.example.com, that external clients can use to access the service. A route can also specify security options, such as TLS termination, and load balancing options, such as round robin or least connection.
NEW QUESTION # 41
Which two statements are true regarding isolated namespaces in Juniper Cloud-Native Contrail Networking (CN2)? (Choose two.)
- A. Pods in isolated namespaces can reach services in non-isolated namespaces.
- B. Pods in isolated namespaces can only communicate with pods in the same namespace.
- C. Pods in isolated namespaces can communicate with pods in non-isolated namespaces.
- D. Pods in isolated namespaces can only reach services in the same namespace.
Answer: B,D
Explanation:
In Juniper Cloud-Native Contrail Networking (CN2), isolated namespaces are used to isolate a pod from other pods without explicitly configuring a network policy. Pods in an isolated namespace can only communicate with pods in the same namespace. They cannot reach pods or services in other isolated or non-isolated namespaces.
NEW QUESTION # 42
What are the two characteristics of the Network Functions Virtualization (NFV) framework?
(Choose two.)
- A. It decouples the network control plane from the forwarding plane.
- B. It implements virtualized tunnel endpoints.
- C. It implements virtualized network functions
- D. It decouples the network software from the hardware.
Answer: C,D
Explanation:
The two characteristics of the Network Functions Virtualization (NFV) framework are that it implements virtualized network functions (VNFs) and that it decouples the network software from the hardware. According to the NFV overview by VMware, NFV is "designed to deliver the network services needed to support an infrastructure totally independent from hardware by decoupling network functions from proprietary purpose-built hardware appliances" and that "the software that provides these network services are known as virtual network functions (VNFs) and run on generic hardware". Other characteristics that are mentioned in the question are related to Software Defined Networking (SDN), not NFV. SDN separates the network control plane from the forwarding plane and implements virtualized tunnel endpoints.
NEW QUESTION # 43
In OpenShift, which node type is used to host your application containers?
- A. worker node
- B. control plane node
- C. full node
- D. miner node
Answer: A
Explanation:
In OpenShift, the worker node is used to host your application containers. Worker nodes are where all your coding adventures happen, and they can be virtual or physical.
NEW QUESTION # 44
Which two statements are correct about OpenShift monitoring? (Choose two.)
- A. OpenShifis not able to configure customized alerts.
- B. OpenShifhas its own monitoring framework.
- C. OpenShifis able to configure customized alerts.
- D. OpenShifmonitoring is not compatible with Grafana.
Answer: B,C
Explanation:
OpenShift includes a preconfigured, preinstalled, and self-updating monitoring stack that provides monitoring for core platform components. You also have the option to enable monitoring for user- defined projects. This means OpenShift has its own monitoring framework (B) and is able to configure customized alerts (D).
NEW QUESTION # 45
What are two Kubernetes objects? (Choose two.)
- A. namespace
- B. service
- C. pod
- D. cluster
Answer: B,C
Explanation:
In Kubernetes, a Pod is the smallest and simplest unit in the Kubernetes object model that you create or deploy. A Pod represents processes running on your cluster. A Service in Kubernetes is an abstraction which defines a logical set of Pods and a policy by which to access them.
NEW QUESTION # 46
Which two tools are used to deploy a Kubernetes environment for testing and development purposes? (Choose two.)
- A. kind
- B. oc
- C. OpenStack
- D. minikube
Answer: A,D
Explanation:
Minikube and kind are two tools that are commonly used to deploy a Kubernetes environment for testing and development purposes.
NEW QUESTION # 47
Which two features are provided by CN2? (Choose two.)
- A. role-based access control
- B. user-defined virtual networks
- C. application firewall
- D. isolated namespaces
Answer: B,D
Explanation:
According to the CN2 datasheet, CN2 supports "multiple isolated namespaces for each tenant, allowing for overlapping IP addresses among tenants" and "user-defined virtual networks that can span across clusters, regions, and clouds". Other features of CN2 include cloud-native networking, NetOps-driven automation, edge and remote compute, enhanced observability, and ultra-fast, high performance.
NEW QUESTION # 48
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