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NEW QUESTION # 39
Which two Linux commands would you use to show the amount of RAM in your system? (Choose two.)
- A. cat /proc/meminto
- B. cat /proc/cpuinfo
- C. free -h
- D. df -h
Answer: A,C
Explanation:
he free -h command in Linux displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel. The cat /proc/meminfo command displays real-time information about the system's memory usage as well as the buffers and shared memory used by the kernel.
NEW QUESTION # 40
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The myvSRX instance is part of a default network.
- B. The c using a custom flavor.
- C. The myvSRX instance is currently running.
- D. The myvSRX instance is using a default image.
Answer: B,C
Explanation:
Based on the image description provided, the instance named 'myvSRX' appears to be using a custom flavor (not default) and is currently in an 'ACTIVE' state, which means it is running.
NEW QUESTION # 41
What are the two characteristics of the Network Functions Virtualization (NFV) framework?
(Choose two.)
- A. It implements virtualized tunnel endpoints.
- B. It decouples the network software from the hardware.
- C. It decouples the network control plane from the forwarding plane.
- D. It implements virtualized network functions
Answer: B,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 # 42
You are deploying CN2 using Kubernetes as your orchestrator.
In this scenario, which component contains the vRouter agent?
- A. Ikube-scheduler
- B. worker node
- C. kube-manager
- D. Contrail controller
Answer: B
Explanation:
In a CN2 deployment using Kubernetes as the orchestrator, the vRouter agent is contained in the worker node. The vRouter agent is responsible for managing the forwarding plane on each node in a Contrail cluster. It interacts with the kernel to manage the services and interfaces within the virtual networks.
NEW QUESTION # 43
Which cloud automation tool uses YAML playbooks to install software and tools on servers?
- A. Heat
- B. Python
- C. Terraform
- D. Ansible
Answer: D
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 # 44
You want to quickly assign a specific combination of permissions to a set of users.
In this scenario, which OpenStack object should you create?
- A. project
- B. role
- C. image
- D. flavor
Answer: B
Explanation:
In OpenStack, a role is a set of permissions that determines what actions users can perform in a given context. Roles are assigned to user-project pairs. If you want to quickly assign a specific combination of permissions to a set of users, you should create a role.
NEW QUESTION # 45
Which SDN model provisions tunnels between the virtual endpoints within and across data centers?
- A. open SDN
- B. SDN by APIs
- C. SDN overlay
- D. switch-based SDN
Answer: C
Explanation:
The SDN overlay model provisions tunnels between the virtual endpoints within and across data centers. This model uses network overlays to support private communication between instances.
NEW QUESTION # 46
What are two reasons to create a Kubernetes deployment rather than work with pods directly?
(Choose two.)
- A. A deployment is ephemeral and therefore requires less configuration.
- B. A deployment simplifies pod updates and roll-outs.
- C. A deployment ensures that the desired number of pods is running at all times.
- D. A deployment contains imperative instructions on how to re-create a pod if a pod dies unexpectedly.
Answer: B,C
Explanation:
A Kubernetes deployment is a resource object in Kubernetes that provides declarative updates to applications. It allows you to describe an application's life cycle, such as which images to use for the app, the number of pods there should be, and the way in which they should be updated. Two reasons to create a Kubernetes deployment rather than work with pods directly are:
A deployment ensures that the desired number of pods is running at all times. If a pod crashes, the Deployment will automatically re-create it.
A deployment simplifies pod updates and roll-outs. It allows you to describe a desired state in its specification and the Deployment controller changes the actual state to the desired state at a controlled rate.
NEW QUESTION # 47
In OpenShift, which node type is used to host your application containers?
- A. miner node
- B. worker node
- C. control plane node
- D. full node
Answer: B
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 # 48
You are provisioning workloads on worker nodes in a Kubernetes cluster.
Which CN2 component is responsible for generating associated routes?
- A. Contrail kube-manager
- B. vRouter forwarding plane
- C. vRouter agent microservice
- D. Configuration Resource (CR) controllers
Answer: C
Explanation:
The vRouter agent microservice is the CN2 component responsible for generating associated routes. When a pod is scheduled on a node, the vRouter agent on that node programs the necessary routes in the kernel routing table to ensure that traffic destined for that pod is properly routed.
NEW QUESTION # 49
Your organization has legacy virtual machine workloads that need to be managed within a Kubernetes deployment.
Which Kubernetes add-on would be used to satisfy this requirement?
- A. ADOT
- B. KubeVirt
- C. Romana
- D. Canal
Answer: B
Explanation:
KubeVirt is a Kubernetes add-on that allows you to run and manage legacy virtual machine workloads alongside container workloads within a Kubernetes deployment. According to the KubeVirt website, KubeVirt is "a virtual machine management add-on for Kubernetes" that "aims to provide a common ground for virtualization solutions on top of Kubernetes". Other Kubernetes add- ons that are mentioned in the question are Canal, which is a network policy provider that combines Flannel and Calico; ADOT, which is a distribution of the OpenTelemetry Collector that supports tracing and metrics collection for AWS services; and Romana, which is a network and security automation solution that supports multiple network topologies and policies.
NEW QUESTION # 50
What are two Kubernetes objects? (Choose two.)
- A. cluster
- B. service
- C. pod
- D. namespace
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 # 51
You must provide tunneling in the overlay that supports multipath capabilities.
Which two protocols provide this function? (Choose two.)
- A. VPN
- B. VXLAN
- C. MPLSoUDP
- D. MPLSoGRE
Answer: B,C
Explanation:
MPLSoUDP (Multiprotocol Label Switching over User Datagram Protocol) and VXLAN (Virtual Extensible LAN) are two protocols that provide tunneling in the overlay and support multipath capabilities. MPLSoUDP is an encapsulation protocol that allows MPLS packets to be encapsulated in UDP packets. VXLAN is a network virtualization technology that attempts to address the scalability problems associated with large cloud computing deployments.
NEW QUESTION # 52
Which CN2 component provides the network control plane capability?
- A. contrail-vrouter-nodes
- B. contrail-k8s-kubemanaqer
- C. contrail-control
- D. contrail-k8s-controller
Answer: C
Explanation:
The network control plane in CN2 represents CN2's full-featured SDN capability. It communicates with other controllers and uses XMPP to communicate with the distributed data plane components on the worker nodes.
NEW QUESTION # 53
You want to limit the memory, CPU, and network utilization of a set of processes running on a Linux host.
Which Linux feature would you configure in this scenario?
- A. slicing
- B. virtual routing and forwarding instances
- C. control groups
- D. network namespaces
Answer: C
Explanation:
Control groups (cgroups) is a Linux kernel feature that limits, accounts for, and isolates the CPU, memory, disk I/O, and network usage of one or more processes. It allows you to allocate resources among user-defined groups of processes running on a system. You can monitor the groups of processes, deny the groups of processes access to certain resources, or even freeze groups of processes.
NEW QUESTION # 54
Juniper Cloud-Native Contrail Networking (CN2) is able to be integrated with which orchestrator?
- A. Mesosphere
- B. CloudStack
- C. Kubernetes
- D. Marathon
Answer: C
Explanation:
Juniper Cloud-Native Contrail Networking (CN2) can be integrated with Kubernetes. CN2 is optimized for Kubernetes-orchestrated environments and can be used to connect, isolate, and secure cloud workloads and services seamlessly across private, public, and hybrid clouds.
NEW QUESTION # 55
In the CN2 architecture, which component integrates with the orchestrator to listen for changes and take action on any events affecting network resources?
- A. kube-a pi server
- B. contrail-vrouter-agent
- C. contrail-k8s-kubemanaqer
- D. cni.bin
Answer: C
Explanation:
contrail-k8s-kubemanager is the component in the CN2 architecture that integrates with the orchestrator (such as Kubernetes or OpenShift) to listen for changes and take action on any events affecting network resources. According to the CN2 components documentation2, contrail- k8s- kubemanager is "the interface between Kubernetes resources and Contrail resources" that
"watches the kube-apiserver for changes to regular Kubernetes resources such as service and namespace and acts on any changes that affect the networking resources". Other components in the CN2 architecture are contrail-k8s-apiserver2, which is an aggregated API server that manages all Contrail resources; cni.bin, which is a binary file that implements the Container Network Interface (CNI) specification for CN2; and contrail-vrouter-agent, which is a pod that runs on every node and communicates with the CN2 control plane to program the data plane.
NEW QUESTION # 56
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 application programming interface (API) calls.
- B. Application modules communicate through interprocess communication
- C. Application modules communicate through remote direct memory access
- D. Application modules communicate through shared data structures (DB/files).
Answer: A
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 # 57
You just uploaded a qcow2 image of a vSRX virtual machine in OpenStack.
In this scenario, which service stores the virtual machine (VM) image?
- A. Glance
- B. Nova
- C. Neutron
- D. Ironic
Answer: A
Explanation:
The service that stores the virtual machine (VM) image in OpenStack is Glance. Glance is the image service in OpenStack that allows you to discover, register, retrieve, and store virtual machine images.
NEW QUESTION # 58
Which two statements are correct about Kubernetes resources? (Choose two.)
- A. A daemonSet ensures that a replica of a pod is running on all nodes.
- B. A deploymentConfig is a Kubernetes resource.
- C. NodePort service exposes the service externally by using a cloud provider load balancer.
- D. A ClusterIP type service can only be accessed within a Kubernetes cluster.
Answer: A,D
Explanation:
A daemonSet in Kubernetes ensures that a replica of a pod is running on all nodes. A ClusterIP type service can only be accessed within a Kubernetes cluster.
NEW QUESTION # 59
What is the function that enables CN2 to manage its resources and interact with the kube-api?
- A. the configuration plane
- B. the management plane
- C. the data plane
- D. the control plane
Answer: A
Explanation:
The configuration plane is the function that enables CN2 to manage its resources and interact with the kube-api. The configuration plane is responsible for storing and managing all configuration data in a Contrail cluster. It provides APIs for other components to retrieve this data.
This allows CN2 to manage its resources and interact with the kube-api.
NEW QUESTION # 60
Which component of an SDN architecture is responsible for configuring and maintaining devices and their state?
- A. the operational plane
- B. the forwarding plane
- C. the management plane
- D. the data 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 # 61
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