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web.groovymark@gmail.com
- November 17, 2024
Question 41
Which financial benefit does network functions virtualization (NFV) offer to carriers?
a) The opportunity for pay-as-you-go services without a large up-front investment
b) The opportunity to own specialized network hardware rather than rent it
c) The opportunity to materially participate in and profit from software development
d) The opportunity for reduced complexity and cost of network security methods
Correct Answer: a) The opportunity for pay-as-you-go services without a large up-front investment
Explanation: NFV enables carriers to adopt pay-as-you-go models for network services, reducing the need for significant up-front investments in specialized hardware.
Question 42
What are the software applications within a network functions virtualization (NFV) architecture that perform specific network tasks?
a) Virtual network functions (VNFs)
b) Application programming interfaces (APIs)
c) Network address translators (NATs)
d) Domain name systems (DNSs)
Correct Answer: a) Virtual network functions (VNFs)
Explanation: VNFs are software implementations of network functions such as firewalls, routers, and load balancers, running on virtualized infrastructure.
Question 43
How are network functions virtualization (NFV) and software-defined networks (SDNs) related?
a) They are two network infrastructure improvement models that are mutually beneficial and often used together.
b) They are both designed to improve network infrastructure but on different sides of the provider-client relationship.
c) They each improve networking, where SDN addresses only software and NFV addresses only hardware.
d) They do not have any significant relationship.
Correct Answer: a) They are two network infrastructure improvement models that are mutually beneficial and often used together.
Explanation: SDN and NFV are complementary technologies, with SDN providing centralized network control and NFV virtualizing network functions, together enabling more flexible and efficient network management.
Question 44
Which concept is used to create differentiated access based on entitlement to administer a network device or controller?
a) Role-based administration control (RBAC)
b) Role-based access control (RBAC)
c) Authentication, authorization, and accounting (AAA)
d) Amortization, adjudication, and allowance (AAA)
Correct Answer: b) Role-based access control (RBAC)
Explanation: RBAC allows access and administrative rights to be assigned based on user roles, providing fine-grained control over who can access and manage network devices.
Question 45
What are the advantages of using centralized network infrastructure?
a) It helps in the easy deployment and management of systems and devices within the network infrastructure.
b) It helps in the easy removal of malicious software from systems and devices within the network infrastructure.
c) It helps in easy access for end users to edge systems and devices within the network infrastructure.
d) It helps in easy information retrieval by the end users of the network infrastructure.
Correct Answer: a) It helps in the easy deployment and management of systems and devices within the network infrastructure.
Explanation: Centralized network infrastructure simplifies deployment and management by providing a single point of control for all systems and devices within the network.
Question 46
What is a direct benefit of using network programmability instead of manual configuration when implementing configuration changes?
a) Increased network stability owing to high latency
b) Reduced user error due to manual configuration
c) Decreased count of security policies
d) Maximized network bandwidth by analyzing the redundant data
Correct Answer: b) Reduced user error due to manual configuration
Explanation: Network programmability reduces the likelihood of human error by automating configuration tasks, making networks more reliable and easier to manage.
Question 47
Which module of OpenStack should be used to improve efficiency and scalability of user storage and unstructured data?
a) Swift
b) Neutron
c) Ironic
d) Congress
Correct Answer: a) Swift
Explanation: Swift is the OpenStack module designed for scalable object storage, making it ideal for storing and retrieving large amounts of unstructured data efficiently.
Question 48
Which module of OpenStack should a developer use for the management of various virtual machine images?
a) Glance
b) Neutron
c) Murano
d) Sahara
Correct Answer: a) Glance
Explanation: Glance is responsible for managing virtual machine images in OpenStack, allowing developers to create, store, and retrieve images for deployment.
Question 49
Which OpenStack module should be used to improve the storage and management of secure authentication information?
a) Barbican
b) Trove
c) Cinder
d) Zaqar
Correct Answer: a) Barbican
Explanation: Barbican is OpenStack's key management service, providing secure storage and management of sensitive information like encryption keys and digital certificates.
Question 50
How does a software-defined networking (SDN) southbound API function?
a) It allows the controller to communicate with the OpenFlow switch and network routers.
b) It allows the controller to interchange elements among application, control, and infrastructure layers.
c) It allows the controller to make a direct connection between applications and the operating system.
d) It allows the controller to manage elements of the application layer through the controllers.
Correct Answer: a) It allows the controller to communicate with the OpenFlow switch and network routers.
Explanation: The southbound API in SDN enables communication between the SDN controller and network devices such as switches and routers, typically using the OpenFlow protocol.
