IBM C1000-172 Exam Dumps

IBM Cloud Internet Services (CIS) offers a high availability option using range and load balancers.

IBM Cloud Internet Services (CIS): CIS provides security, reliability, and performance for internet-facing applications by offering features like DDoS protection, global load balancing, and content delivery.

High Availability with Load Balancers: CIS uses global load balancing to distribute traffic across multiple servers or data centers, ensuring high availability and minimizing downtime. The range load balancers provide the flexibility to direct traffic efficiently.

Reference from IBM Cloud Professional Architect Materials:

As detailed in IBM's CIS documentation, one of the solutions provided is to ensure high availability through the use of load balancers.

Other options are incorrect:

A . Supporting multi-VLAN and NAT is related to network configuration.

B . Protecting public network, private network, and VLAN is more about network security.

C . Managing from API and portal with appliance GUI relates to management interfaces, not core CIS functionality.

A security feature of IBM Cloud VPN for virtual private cloud (VPC) service is Perfect Forward Secrecy (PFS).

Perfect Forward Secrecy (PFS): PFS ensures that the compromise of one session key does not compromise the confidentiality of past sessions. It provides additional security for encrypted communications by generating unique keys for each session, making it a critical feature for VPN services.

IBM Cloud VPN for VPC: This service utilizes PFS to secure communication between the cloud environment and external networks, ensuring high levels of data protection and encryption.

Reference from IBM Cloud Professional Architect Materials:

The IBM documentation on IBM Cloud VPN describes PFS as a fundamental security feature for protecting data transmitted over the network.

Other options are incorrect:

A . Passive Peer Detection is not a security feature.

B . RSA key exchange is a cryptographic algorithm but does not describe a VPN-specific security feature.

D . Post-shared key is not a relevant term.

IBM Cloud Direct Link utilizes Layers 2 and 3 of the OSI model.

Layer 2 (Data Link Layer) and Layer 3 (Network Layer): IBM Cloud Direct Link provides private connectivity from an on-premises data center to the IBM Cloud through dedicated connections. At Layer 2, it provides direct network paths, while at Layer 3, it handles routing between networks.

Direct Link Functionality: Direct Link offers high-performance, secure connectivity options for hybrid cloud solutions, making it an essential service for enterprises that require a secure and efficient connection to the IBM Cloud.

Reference from IBM Cloud Professional Architect Materials:

The IBM Cloud Direct Link documentation specifies that it operates at OSI Layers 2 and 3 to provide dedicated connectivity options.

Other options are incorrect:

B . Layers 1 thru 7 encompasses all OSI layers, which is incorrect.

C . Layers 3 and 4 include the transport layer, which Direct Link does not utilize directly.

D . Layers 1 and 2 omits Layer 3, which is crucial for network routing.

IBM Cloud Transit Gateway provides network connectivity between different IBM Cloud Virtual Private Clouds (VPCs). It allows for secure, scalable, and efficient communication between resources deployed in separate VPCs, whether they are within the same region or across different regions.

How Transit Gateway Works: It acts as a central hub that facilitates the routing of traffic between multiple VPCs without the need to configure individual VPC peering connections. This simplifies network management, improves scalability, and enhances security by maintaining a single point of control.

Benefits of Transit Gateway: This service supports both private and public connectivity options and allows for routing policies that can be customized according to business needs. It also provides seamless integration with other IBM Cloud services and third-party networks.

Comparison of Other Options:

Domain Name System (A): Not used for network connectivity between VPCs.

Direct Link (B): Used for dedicated, high-speed connections from on-premises to IBM Cloud but not between VPCs.

Power Edge Router (D): Not an IBM Cloud service for inter-VPC connectivity.

IBM Cloud Transit Gateway Documentation

IBM Cloud Networking Solutions

IBM Cloud Architect Exam Study Guide

When an organization has deployed Red Hat OpenShift on an IBM Cloud cluster on a Virtual Private Cloud (VPC) infrastructure and needs to connect to resources hosted on the IBM Cloud Classic infrastructure, IBM Cloud Direct Link and Transit Gateway are the two most suitable connectivity options.

IBM Cloud Direct Link:

IBM Cloud Direct Link provides dedicated, high-speed, and secure connectivity between IBM Cloud infrastructure components, including between VPCs and IBM Cloud Classic infrastructure. By establishing a Direct Link connection, traffic can securely flow between the Red Hat OpenShift workloads in the VPC and the applications or services running on the Classic infrastructure without traversing the public internet.

Transit Gateway:

IBM Cloud Transit Gateway allows organizations to establish a hub-and-spoke model of connectivity, facilitating communication between different networks, such as VPCs and Classic infrastructure, across IBM Cloud. With Transit Gateway, you can interconnect multiple VPCs and Classic networks, allowing seamless communication across the cloud environments. This option is ideal for managing traffic between isolated network segments while maintaining control over traffic routing and security policies.

These two options are typically used in multi-cloud or hybrid cloud architectures to ensure smooth, secure, and scalable communication between cloud environments (VPC and Classic infrastructure) in IBM Cloud.

IBM Cloud Documentation Reference:

IBM Cloud Direct Link

IBM Cloud Transit Gateway