CCNA 200-125 Exam: Cloud & Virtual Services With Answers

  1. Which option is the benefit of implementing an intelligent DNS for a cloud computing solution?
    • A. It reduces the need for a backup data center.
    • B. It can redirect user requests to locations that are using fewer network resources.*
    • C. It enables the ISP to maintain DNS records automatically.
    • D. It eliminates the need for a GSS.
  2. What are the three major components of Cisco network virtualization? (Choose three)
    • A. network access control*
    • B. path isolation*
    • C. virtual network services*
    • D. policy enforcement

    Show (Hide) Explanation/Reference
    Network virtualization architecture has three main components:

    + Network access control and segmentation of classes of users: Users are authenticated and either allowed or denied into a logical partition. Users a re segmented into employees, contractors and consultants, and guests, with respective access to IT assets. This component identifies users who are authorized to access the network and then places them into the appropriate logical partition.

    Path isolation: Network isolation is preserved across the entire enterprise: from the edge to the campus to the WAN and back again. This component maintains traffic partitioned over a routed infrastructure and transports traffic over and between isolated partitions. The function of mapping isolated paths to VLANs and to virtual services is also performed in component.

    Network Services virtualization: This component provides access to shared or dedicated network services such as security, quality of service (QoS), and address management (Dynamic Host Configuration Protocol [DHCP] and Domain Name System [DNS]). It also applies policy per partition and isolates application environments, if required.

    Reference: http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series switches/white_paper_c11-531522.pdf

  3. Which three technical services support cloud computing?
    • A. network-monitored power sources
    • B. layer 3 network routing*
    • C. ip localization*
    • D. redundant connections
    • E. VPN connectivity
    • F. extended SAN services*

    Show (Hide) Explanation/Reference
    Four technical services are essential to supporting the high level of flexibility, resource availability, and transparent resource connectivity required for cloud computing:

    + The Layer 3 network offers the traditional routed interconnection between remote sites and provides end-user access to cloud services.
    + The extended LAN between two or more sites offers transparent transport and supports application and operating system mobility.
    + Extended SAN services support data access and accurate data replication.
    + IP Localization improves northbound and southbound traffic as well as server-to-server workflows.

    Reference: https://www.cisco.com/c/en/us/products/collateral/ios-nx-os-software/ios-xr-software/white_paper_c11-694882.html

  4. Which major component of the network virtualization architecture isolate users according to policy?
    • A. policy enforcement
    • B. network access control*
    • C. network services virtualization
    • D. other

    Show (Hide) Explanation/Reference
    Network virtualization architecture has three main components:

    Network access control and segmentation of classes of users: Users are authenticated and either allowed or denied into a logical partition. Users are segmented into employees, contractors and consultants, and guests, with respective access to IT assets. This component identifies users who are authorized to access the network and then places them into the appropriate logical partition.

    + Path isolation: Network isolation is preserved across the entire enterprise: from the edge to the campus to the WAN and back again. This component maintains traffic partitioned over a routed infrastructure and transports traffic over and between isolated partitions. The function of mapping isolated paths to VLANs and to virtual services is also performed in component.

    + Network Services virtualization: This component provides access to shared or dedicated network services such as security, quality of service (QoS), and address management (Dynamic Host Configuration Protocol [DHCP] and Domain Name System [DNS]). It also applies policy per partition and isolates application environments, if required.

    Reference: http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/white_paper_c11-531522.pdf

  5. Which three options are the major components of a network virtualization architecture? (Choose three)
    • A. virtual network services*
    • B. authentication services
    • C. network access control*
    • D. network resilience
    • E. path isolation*
    • F. policy enforcement

    Show (Hide) Explanation/Reference
    Network virtualization architecture has three main components:

    Network access control and segmentation of classes of users: Users are authenticated and either allowed or denied into a logical partition. Users are segmented into employees, contractors and consultants, and guests, with respective access to IT assets. This component identifies users who are authorized to access the network and then places them into the appropriate logical partition.

    Path isolation: Network isolation is preserved across the entire enterprise: from the edge to the campus to the WAN and back again. This component maintains traffic partitioned over a routed infrastructure and transports traffic over and between isolated partitions. The function of mapping isolated paths to VLANs and to virtual services is also performed in component.

    Network Services virtualization: This component provides access to shared or dedicated network services such as security, quality of service (QoS), and address management (Dynamic Host Configuration Protocol [DHCP] and Domain Name System [DNS]). It also applies policy per partition and isolates application environments, if required.

    Reference: https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/white_paper_c11-531522.html

  6. Which cloud service is typically used to provide DNS and DHCP services to an enterprise?
    • A. IaaS*
    • B. DaaS
    • C. SaaS
    • D. PaaS

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