The ALU must have two 8-bit bus inputs (labelled A and B) and one 8-bit output as illustrated in Figure 1. The function of the ALU is selected using a three-bit signal F (F2, F1, FO) which select one of eight operations in the ALU as indicated in Table 1.
The ALU above is can be built in a straightforward manner as a combinational circuit (with three inputs signals A, B, F, and one output signal C).
Scenario/Introduction/Background Information:
Amity Business process outsourcing (BPO) SDN, BHD is a well-established company in Malaysia and its main business is to contract the operations and responsibilities of a specific business process to the third-party companies. The Amity received an online customer’s services contract order from the AMY bank SDN, BHD, Malaysia. The primary functions of the online customer services are to respond immediately to the customer queries raised through the telephone call and text chatting and provide appropriate solutions to them. At a time many customers can make a call/chatting.
Assume that the Amity selected you as a system administrator and requested you to handle the project.
Tasks
Task 1
Identify the various requirements to complete the project and discuss each of it with respect to the Network environment.
Task 2
Analyze the various Network devices and identify the suitable Network devices to cover all the requirements of the scenario.
Task 3
Analyze the various Network topologies and identify the suitable topology to cover all the requirements of the scenario.
Task 4
Identify and explain a suitable transmission medium to cover all the requirements of the scenario
Task 5
- Compare and contrast the suitable networks using the following criteria:
- Peer to Peer
- Client and Server
- Discuss about the network operating system of the scenario.
The Correct Answer and Explanation is :
It seems I’m unable to open the link directly. However, I can still help you with the tasks.
Task 1: Requirements to Complete the Project
The key requirements for the project to handle online customer services for AMY Bank via telephone and text chat would involve:
- High Availability: The system must be highly available to handle multiple customer requests simultaneously.
- Scalability: It should support scaling up as the number of customers increases.
- Low Latency: The system must respond quickly to customer queries to ensure a smooth customer experience.
- Security: Ensuring the safety of customer information and securing communications is critical.
- Real-time Communication: The system should handle real-time communication, supporting both voice and text data transmission.
- Redundancy: There should be backup systems and paths in place to ensure service availability even during failures.
Task 2: Suitable Network Devices
The network environment will require various devices to meet these needs:
- Routers: To manage traffic between different segments and direct data to the correct destination.
- Switches: To connect devices within the local network efficiently, providing fast data exchange between workstations and servers.
- Firewalls: To secure the network by filtering incoming and outgoing traffic and protecting against unauthorized access.
- Load Balancers: To ensure traffic is evenly distributed across servers, preventing overload on any single machine.
- VoIP Gateways: If the voice communication will be handled over the internet, VoIP (Voice over Internet Protocol) gateways will be needed to interface with the telephone network.
- Access Points: If wireless communication is needed, wireless access points (APs) will allow mobile devices to connect to the network.
Task 3: Suitable Network Topology
The most suitable topology would be a star topology. In a star topology:
- Each client (customer service representative or a user) is connected to a central device (usually a switch or router).
- This setup is easy to scale and manage and minimizes the impact of failures.
- The central hub (switch/router) can handle the routing of data, ensuring efficient communication.
Task 4: Suitable Transmission Medium
The best transmission medium for this scenario would be fiber optic cables for the following reasons:
- High Speed: Fiber optic cables offer very high data transfer rates, suitable for supporting high traffic volumes.
- Low Latency: This is critical for real-time communications, such as voice and chat.
- Reliability: Fiber optics are less susceptible to interference compared to copper cables and have longer reach.
Task 5: Compare Peer-to-Peer and Client-Server Networks
- Peer-to-Peer (P2P):
- Advantages: Simple to set up and inexpensive, with each device acting as both a server and client.
- Disadvantages: Limited scalability and security issues, as there is no centralized control.
- Suitability: Not ideal for handling a large volume of simultaneous requests in a business environment like this.
- Client-Server:
- Advantages: Centralized management, better security, scalability, and the ability to handle a large number of simultaneous users.
- Disadvantages: Requires more resources for setup and maintenance.
- Suitability: Ideal for this scenario, as it can handle multiple concurrent customer interactions and offers a centralized point for managing services.
Network Operating System
A Client-Server Network Operating System (NOS) like Windows Server or Linux Server would be suitable. These systems provide robust features for managing user access, security, and resources, making them ideal for this business scenario. The NOS can also manage virtual machines for scalability and ensure secure communication channels.
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