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NEW QUESTION # 18
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. There are no virtual machines.
- B. There are no projects.
- C. There are no services.
- D. There are no compute nodes.
Answer: A
Explanation:
Explanation
The correct answer is D. There are no virtual machines. Referring to the exhibit, which shows the output of the openstack server list command, we can see that there are no rows in the table, which means that there are no servers (or virtual machines) in the OpenStack environment. The command openstack server list is used to list servers that you can access1. The other statements are incorrect, because the exhibit does not show any information about projects, services, or compute nodes. To list projects, you would use the command openstack project list2. To list services, you would use the command openstack service list2. To list compute nodes, you would use the command openstack compute service list3.
NEW QUESTION # 19
Which Docker component builds, runs, and distributes Docker containers?
- A. dockerd
- B. docker registry
- C. containerd
- D. docker cli
Answer: A
Explanation:
Explanation
The Docker component that builds, runs, and distributes Docker containers is dockerd. Dockerd is the persistent process that manages containers. Docker uses different binaries for different tasks. For example, it uses the docker binary for CLI commands and dockerd for the daemon process.
NEW QUESTION # 20
You have started a container in Docker, made configuration changes to it, and stopped the container. You notice the next time that you execute the docker run command, the changes have not persisted.
What is the problem?
- A. The docker run command starts a new copy of the container, not the existing version.
- B. The docker load command must be used to persist the change.
- C. Docker images need to be recompiled to make any changes.
- D. The docker exec command needs to be run first to save and exit the running container.
Answer: A
Explanation:
Explanation
Docker containers are designed to be ephemeral, meaning they run based on their current configuration. When a Docker container is stopped, it does not automatically save changes made during its runtime. When you execute docker run, it starts a new instance of the container, not an existing version with its changes[14-16]. If you want to persist changes between runs, you need to commit changes to a new Docker image or use Docker volumes for data persistence[14-16]. References from Juniper site: Stack Overflow, Docker Docs
NEW QUESTION # 21
Which component of an SDN architecture is responsible for configuring and maintaining devices and their state?
- A. the forwarding plane
C the management plane - B. the data plane
- C. the operational plane
Answer: B
Explanation:
Explanation
The management plane in an SDN architecture is responsible for configuring and maintaining devices and their state1. 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 management1.
NEW QUESTION # 22
Which SDN model provisions tunnels between the virtual endpoints within and across data centers?
- A. SDN overlay
- B. switch-based SDN
- C. SDN by APIs
- D. open SDN
Answer: A
Explanation:
Explanation
The SDN overlay model provisions tunnels between the virtual endpoints within and across data centers2. This model uses network overlays to support private communication between instances3. References from Juniper site: Microsoft Learn, Red Hat Customer Portal
NEW QUESTION # 23
What is the name of the Docker container runtime?
- A. docker cl
- B. cri-o
- C. containerd
- D. dockerd
Answer: C
Explanation:
Explanation
The name of the Docker container runtime is containerd, which is a daemon that manages the complete container lifecycle of its host system, from image transfer and storage to container execution and supervision to low-level storage to network attachments and beyond. Dockerd is the Docker daemon that acts as the primary user interface for Docker. Docker cl is not a valid name for any Docker component. Cri-o is another container runtime that implements the Kubernetes Container Runtime Interface (CRI) to enable using OCI (Open Container Initiative) compatible runtimes
NEW QUESTION # 24
Which term identifies to which network a virtual machine interface is connected?
- A. Virtual Extensible LAN (VXLAN)
- B. machine access control (MAC)
- C. virtual tunnel endpoint (VTEP)
- D. virtual network ID (VNID)
Answer: D
Explanation:
Explanation
The term that identifies to which network a virtual machine interface is connected is the virtual network ID (VNID). The VNID is a unique identifier assigned to each virtual network. It is used to differentiate between different virtual networks and to ensure that each virtual machine interface is connected to the correct network.
NEW QUESTION # 25
Which virtualization method requires less duplication of hardware resources?
- A. OS-level virtualization
- B. full virtualization
- C. paravirtualization
- D. hardware-assisted virtualization
Answer: A
Explanation:
Explanation
OS-level virtualization requires less duplication of hardware resources. This method allows multiple instances of an operating system or multiple different operating systems to run on a single physical server, sharing the same hardware resources. This results in more efficient use of hardware resources compared to other virtualization methods such as full virtualization or paravirtualization
NEW QUESTION # 26
Which two statements are true about virtual networks? (Choose two.)
- A. Virtual networks are limited to a single device.
- B. Virtual networks are available on common Linux distributions.
- C. Virtual networks are able to span multiple devices.
- D. Virtual networks are available only as part of a cloud orchestration system.
Answer: B,C
Explanation:
Explanation
Virtual networks are logical networks that are decoupled from the underlying network hardware. This decoupling allows network administrators to manage their networks independently of the physical network topology. As such, virtual networks can span multiple devices, allowing for a high degree of flexibility and scalability. Furthermore, virtual networks are available on common Linux distributions, allowing for easy deployment and management.
NEW QUESTION # 27
You want to view pods with their IP addresses in OpenShift.
Which command would you use to accomplish this task?
- A. oc get pods -o yaml
- B. oc get pods
- C. oc get all
- D. oc get pods -o wide
Answer: D
Explanation:
Explanation
To view pods with their IP addresses in OpenShift, you would use the command oc get pods -o wide23. This command provides additional information such as the IP address and the node where the pod is located23.
References from Juniper site: OpenShift Documentation, Stack Overflow
NEW QUESTION # 28
Which component of a software-defined networking (SDN) controller defines where data packets are forwarded by a network device?
- A. the control plane
- B. the forwarding plane
C the management plane - C. the operational plane
Answer: B
Explanation:
Explanation
The forwarding plane (also known as the data plane) of a software-defined networking (SDN) controller is responsible for forwarding data packets based on the instructions given by the control plane23. It handles all activities involving data packets sent by the end-user, including forwarding of packets2. References from Juniper site: GeeksforGeeks, SDxCentral
NEW QUESTION # 29
Which two statements are true about VRF instances? (Choose two.)
- A. VRFs do not enable overlapping IP addresses within the same cloud network.
- B. VRFs share a single routing table.
- C. VRFs enable overlapping IP addresses within the same cloud network.
- D. Each VRF has its own routing table.
Answer: C,D
Explanation:
Explanation
Virtual Routing and Forwarding (VRF) is a technology that allows multiple instances of a routing table to coexist within the same router at the same time. Because the routing instances are independent, overlapping IP addresses can be used without conflict45. Each VRF has its own routing table4. References from Juniper site: Wikipedia, Cisco
NEW QUESTION # 30
Which statement is true about containers?
- A. Containers share a copy of the host's operating system binaries.
- B. Containers perform abstraction at the application layer.
- C. Containers perform abstraction at the physical layer.
- D. Containers are slower to boot than virtual machines.
Answer: B
Explanation:
Explanation
Containers perform abstraction at the application layer12. They are executable units of software in which application code is packaged along with its libraries and dependencies, in common ways so that the code can be run anywhere-whether it be on desktop, traditional IT or the cloud12.
NEW QUESTION # 31
Which two statements are correct about an overlay network? (Choose two.)
- A. The overlay network is built using encapsulation tunnels.
- B. The overlay network can only be built using a Layer 3 underlay network.
- C. The overlay network is the virtual network used to connect multiple virtual machines (VMs).
- D. The overlay network provides physical connectivity between devices.
Answer: A,C
Explanation:
Explanation
An overlay network is a virtual network that is built on top of another network. Nodes in the overlay network are connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network45. For example, distributed systems such as peer-to-peer networks and client-server applications often overlay their own network connections over the physical network connections provided by the Internet
NEW QUESTION # 32
Which two statements about overlay virtual networks are true? (Choose two.)
- A. Overlay virtual networks work well on an IP spine-and-leaf topology.
- B. Overlay virtual networks allow both Layer 2 and Layer 3 communication.
- C. Overlay virtual networks only allow Layer 3 communication.
- D. Overlay virtual networks use Juniper proprietary protocols.
Answer: A,B
Explanation:
Explanation
Overlay virtual networks are virtual logical networks constructed on top of an existing network using network virtualization technologies45. They decouple network services from the physical networking and interconnection technologies on the underlay network45. Two true statements about overlay virtual networks are:
Overlay virtual networks work well on an IP spine-and-leaf topology6. They can be created over underlay networks using network virtualization technologies4.
Overlay virtual networks allow both Layer 2 and Layer 3 communication65. They can serve not only different services (such as multiple departments) of the same tenant but also different tenants4.
References from Juniper site: Microsoft Learn, Huawei IP Encyclopedia, Network Insight
NEW QUESTION # 33
Click the Exhibit button.
Referring to the exhibit, what does port: 8080 represent?
- A. It is the port on which the webapp pod is listening.
- B. It is the port that is exposed to clients that are internal to the cluster.
- C. It is the port that is used by the external load balancer.
- D. It is the port that is exposed to clients that are external to the cluster.
Answer: B
Explanation:
Explanation
In the context of a Kubernetes service, port: 8080 represents the port that is exposed to clients that are internal to the cluster45. This is the stable port the Service exposes inside the cluster - other Pods in the cluster send traffic to this port4. References from Juniper site: Nigel Poulton, Baeldung
NEW QUESTION # 34
Juniper Cloud-Native Contrail Networking (CN2) is able to be integrated with which orchestrator?
- A. Mesosphere
- B. Kubernetes
- C. Marathon
- D. CloudStack
Answer: B
Explanation:
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 # 35
Which two tools are used to deploy a Kubernetes environment for testing and development purposes? (Choose two.)
- A. OpenStack
- B. minikube
- C. oc
- D. kind
Answer: B,D
Explanation:
Explanation
Minikube and kind are two tools that are commonly used to deploy a Kubernetes environment for testing and development purposes3
NEW QUESTION # 36
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:
Explanation
OpenShift includes a preconfigured, preinstalled, and self-updating monitoring stack that provides monitoring for core platform components4. You also have the option to enable monitoring for user-defined projects4. This means OpenShift has its own monitoring framework (B) and is able to configure customized alerts (D).
References from Juniper site: OpenShift Container Platform
NEW QUESTION # 37
The openstack user list command uses which OpenStack service?
- A. Keystone
- B. Nova
- C. Cinder
- D. Neutron
Answer: A
Explanation:
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 # 38
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