Bare Metal Servers and VPC Overview
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Questions and Answers

What is the purpose of the cooldown period in scaling actions?

  • To enable immediate resource allocation
  • To automate bandwidth scaling
  • To schedule periodic scaling actions
  • To prevent alarm-triggered scaling for a set time after an action (correct)

    • Which type of EIP bandwidth can AS adjust based on the scaling policy?

  • Monthly EIPs
  • Pay-per-use EIPs (correct)
  • Yearly EIPs
  • Static bandwidth EIPs

    • What characteristic of Cloud Container Engine (CCE) allows users to manage containers easily?

  • It is an enterprise-class Kubernetes service. (correct)
  • It functions without a dedicated physical server.
  • It requires extensive manual setup.
  • It limits scalability based on the user’s resources.

    • What advantage does a Dedicated Host (DeH) provide for users?

    <p>It provides full isolation of compute resources.</p> Signup and view all the answers

    How does FunctionGraph function in terms of server management?

    <p>It facilitates high availability without server management.</p> Signup and view all the answers

    What is one advantage of using BMS over ECS?

    <p>Additional support for virtualization services</p> Signup and view all the answers

    What allows users to quickly create a BMS with the same OS and applications as an existing one?

    <p>Private image creation</p> Signup and view all the answers

    Which network type does not support security groups, EIPs, and ELB?

    <p>High-speed network</p> Signup and view all the answers

    Which of the following is a feature of Virtual Private Cloud (VPC) in relation to BMS?

    <p>Improves security of BMSs in the cloud</p> Signup and view all the answers

    How many types of networks are available for BMS?

    <p>5 types</p> Signup and view all the answers

    What is the role of NIC bonding in BMS networking?

    <p>To combine multiple interfaces for efficiency</p> Signup and view all the answers

    What does ToR refer to in the context of BMS networking?

    <p>Server rack cabling configuration</p> Signup and view all the answers

    Which service is offered by HUAWEI CLOUD to help manage BMS costs?

    <p>Operational and Maintenance (O&amp;M) services</p> Signup and view all the answers

    What is one of the main benefits of using Automatic Scaling (AS) for managing resources?

    <p>It ensures resources are available at all times and costs are managed effectively.</p> Signup and view all the answers

    How does AS improve system availability?

    <p>By automatically associating a load balancing listener with newly added instances.</p> Signup and view all the answers

    Which scaling action can AS be configured to trigger based on specific conditions?

    <p>Scaling actions based on threshold metrics or schedules.</p> Signup and view all the answers

    What type of scaling policy allows actions to be scheduled at specific times?

    <p>Scheduled policies.</p> Signup and view all the answers

    In the context of AS, what does high fault tolerance refer to?

    <p>The monitoring and replacement of unhealthy instances in an AS group.</p> Signup and view all the answers

    What is a key capability of AS regarding ECS instances?

    <p>It adjusts the number of ECS instances based on service demands.</p> Signup and view all the answers

    What determines when AS will trigger scaling actions?

    <p>Predefined thresholds and schedules.</p> Signup and view all the answers

    Which metric can be used to configure an alarm-based scaling policy in AS?

    <p>Memory utilization metrics.</p> Signup and view all the answers

    What is a key benefit of using Virtual Private Clouds (VPCs)?

    <p>VPCs are logically isolated from each other.</p> Signup and view all the answers

    Which feature allows two VPCs in the same region to communicate privately?

    <p>VPC Peering Connection</p> Signup and view all the answers

    What is a characteristic of high-speed networks compared to standard VPCs?

    <p>High-speed networks solely carry east-west traffic.</p> Signup and view all the answers

    What must be ensured when configuring a BMS with high-speed NICs?

    <p>Different high-speed networks must be selected for different high-speed NICs.</p> Signup and view all the answers

    How does an enhanced high-speed network differ from a standard high-speed network?

    <p>Enhanced networks have customizable network planes.</p> Signup and view all the answers

    What is a restriction when using high-speed networks with BMS configurations?

    <p>High-speed networks do not support security groups.</p> Signup and view all the answers

    What technology allows BMSs to automatically choose the best alternative path during network failures?

    <p>Dynamic BGP</p> Signup and view all the answers

    Which statement about the default communication capabilities of a VPC is correct?

    <p>VPCs cannot communicate with the Internet without configuration.</p> Signup and view all the answers

    What is the primary benefit of using user-defined VLANs in a BMS network?

    <p>Isolation of network traffic</p> Signup and view all the answers

    Which communication mode is NOT supported by an InfiniBand network?

    <p>Local Direct Memory Access (LDMA)</p> Signup and view all the answers

    When creating an InfiniBand network, what must you select during BMS creation?

    <p>A flavor that supports InfiniBand NICs</p> Signup and view all the answers

    What does the Image Management Service (IMS) allow you to do with images?

    <p>Create VMs from multiple types of images</p> Signup and view all the answers

    Which factor is NOT highlighted as a feature of InfiniBand?

    <p>Compatibility with Wi-Fi</p> Signup and view all the answers

    Which of the following statements about VLAN NICs is accurate?

    <p>User-defined VLAN NICs typically exist in pairs.</p> Signup and view all the answers

    How can IP addresses be assigned on an InfiniBand network when using IPoIB?

    <p>Either through static IP addresses or DHCP</p> Signup and view all the answers

    Which type of image is NOT managed by the Image Management Service?

    <p>Archived legacy images</p> Signup and view all the answers

    Study Notes

    Bare Metal Servers (BMS)

    • Provide excellent computing, storage, and network performance.
    • Can offer services that ECSs cannot due to architectural restrictions, such as virtualization, high-performance computing, services with heavy I/O requirements, and services needing core data control and resource isolation.
    • Full lifecycle management, provisioning in minutes.
    • Provide a common BMS, a BMS supporting quick provisioning, or a BMS running on a Dedicated Cloud.
    • Support creation of private images for easier migration.
    • Offer various types of networks for isolation; VPC, high-speed network, enhanced high-speed network, user-defined VLAN, and InfiniBand network.
    • BMSs can communicate with ECSs through VPCs or InfiniBand networks.
    • VPC supports security groups, EIPs, and ELB.
    • High-speed network and user-defined VLAN allow communication only through layer-2 connections.

    Virtual Private Cloud (VPC)

    • Logically isolated virtual network with manageability and configurability.
    • Enhances BMS security in the cloud, streamlining network deployment.
    • Allows configuration of security groups, VPNs, IP address segments, and bandwidth.
    • Isolation from other VPCs for enhanced security, with ACLs for subnets and security groups for ECSs.
    • Default no internet connection, but supports various methods for access; EIP, ELB, NAT Gateway, VPN, and Direct Connect.
    • Enables communication between VPCs using a VPC peering connection, facilitating interactions with private IP addresses.
    • Provides fast access with dynamic BGP connections to multiple carriers, offering real-time automatic failover for reliability.

    High-Speed Network

    • Internal network between BMSs designed for high bandwidth and connecting BMSs within the same availability zone.
    • Suitable for services demanding high throughput and low latency.
    • Shares the same physical plane as VPCs, focused on east-west traffic with only layer-2 communication.
    • Prevents overlapping with standard NICs during BMS creation.
    • Lacks compatibility with security groups, EIPs, DNS, VPNs, or Direct Connect.
    • Requires different high-speed networks for each high-speed NIC.
    • Not configurable after BMS provisioning.

    Enhanced High-Speed Network

    • High-quality, high-speed, low-latency internal network for BMS communication.
    • Uses upgraded hardware and software for cross-POD BMS communication.
    • Offers higher bandwidth (at least 10 Gbit/s) compared to standard high-speed networks.
    • Allows customized number of network planes and supports up to 4,000 subnets.
    • Permits VMs on a BMS to access the internet.

    User-Defined VLAN

    • Allocates VLAN subnets to isolate traffic, ideal for scenarios like SAP HANA and virtualization.
    • NICs are in pairs for configuration of NIC bonds to achieve high availability.
    • Limited to communication only within the same availability zone.

    InfiniBand Network

    • Low latency and high bandwidth network suitable for high-performance computing (HPC) projects.
    • Supports RDMA and IPoIB communication modes.
    • Requires selecting BMS flavors supporting InfiniBand NICs during creation.
    • Enables BMS communication using RDMA after provisioning.
    • Requires IP address configuration for IPoIB communication.
    • Widely used for server-to-server, server-to-storage, and server-to-network communication.

    Image Management Service (IMS)

    • Manages the complete image lifecycle for creating ECSs and BMSs.
    • Supports public, private, shared, and Marketplace images.

    Auto Scaling (AS)

    • Automatic resource adjustment for ECS instances and bandwidth based on service demands and policies.
    • Maintains system stability by adjusting resources according to access volume.
    • Improves cost management by optimizing resource utilization, reducing waste.
    • Enhances system availability by ensuring sufficient resources for applications.
    • Supports high fault tolerance by monitoring and replacing unhealthy instances.
    • Provides scaling control with thresholds and scheduling for different scaling actions.
    • Allows configuration of various policies: alarm-based, scheduled, and periodic.
    • Supports bandwidth scaling for pay-per-use EIPs and shared bandwidths.
    • Does not adjust the bandwidth of yearly/monthly EIPs.

    Cloud Container Engine (CCE)

    • Highly scalable, performant, and enterprise-grade Kubernetes service.
    • Simplifies deployment, management, and scaling of containerized applications on HUAWEI CLOUD.

    Dedicated Host (DeH)

    • Physical server fully dedicated to user services.
    • Ensures performance by isolating compute resources.
    • Enables utilization of existing software licenses for cost savings.

    FunctionGraph

    • Serverless computing service allowing code execution without server management.
    • Upload code and define execution conditions for automatic handling.
    • Pay-as-you-go pricing, only charged during code execution.

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    03_Handout_1.1(2).pdf

    Description

    This quiz covers the essential features and benefits of Bare Metal Servers (BMS) and Virtual Private Cloud (VPC) solutions. Participants will explore computing performance, network isolation, and the unique advantages that BMS offers over ECSs, including architectural capabilities and lifecycle management. Test your knowledge on how these technologies support advanced computing needs.

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