Computer Networking: Topologies Overview
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Questions and Answers

What is a major disadvantage of a bus topology?

  • It cannot easily be expanded.
  • If the bus cable fails, the entire network goes down. (correct)
  • It requires a central hub for all connections.
  • It is susceptible to data collisions.

    • Which topology is best suited for small networks or temporary setups?

  • Bus topology (correct)
  • Point-to-point topology
  • Mesh topology
  • Star topology

    • How does a star topology manage device connections?

  • Devices are connected in a circular manner.
  • Devices communicate through each other.
  • All devices are connected directly to each other.
  • Devices connect to a central hub or switch. (correct)

    • What is a significant benefit of a star topology compared to a bus topology?

    <p>Easier to troubleshoot and manage.</p> Signup and view all the answers

    In a ring topology, how does data travel?

    <p>In one direction around the circle.</p> Signup and view all the answers

    What happens if the central hub in a star topology fails?

    <p>The entire network goes down.</p> Signup and view all the answers

    Which topology is characterized by a single central cable to which all devices connect?

    <p>Bus topology</p> Signup and view all the answers

    Which of the following is a limitation of bus topology?

    <p>It has limited cable length and device support.</p> Signup and view all the answers

    What is a primary use of the Government Community Cloud?

    <p>To ensure compliance with specific regulations and standards</p> Signup and view all the answers

    Which cloud service is provided by Amazon Web Services (AWS)?

    <p>Amazon EC2</p> Signup and view all the answers

    How does Microsoft Azure primarily benefit organizations?

    <p>By integrating well with Microsoft’s existing software</p> Signup and view all the answers

    Which of the following is a characteristic of community clouds?

    <p>They facilitate collaboration for entities with shared goals</p> Signup and view all the answers

    What is a notable feature of Google Cloud Platform (GCP)?

    <p>Robust analytics and machine learning capabilities</p> Signup and view all the answers

    What is one of the primary benefits of using community clouds for compliance and security?

    <p>Ability to meet shared regulatory standards</p> Signup and view all the answers

    What does Azure SQL Database provide to organizations?

    <p>A managed relational database service</p> Signup and view all the answers

    Which service allows users to provide scalable virtual machines on GCP?

    <p>Google Compute Engine</p> Signup and view all the answers

    What is the primary use case for Anti-Malware Software?

    <p>Detecting and removing malware from systems.</p> Signup and view all the answers

    What type of device is a Cisco ASA with VPN classified as?

    <p>VPN Appliance</p> Signup and view all the answers

    Which of the following is a key function of SIEM solutions?

    <p>Aggregating and analyzing security data.</p> Signup and view all the answers

    What is an example of a log management tool for security analysis?

    <p>LogRhythm</p> Signup and view all the answers

    What does a VPN primarily provide over a less secure network?

    <p>Data encryption and secure connection</p> Signup and view all the answers

    What role does threat detection and response play in cloud security?

    <p>It helps detect, analyze, and respond to security threats.</p> Signup and view all the answers

    Which technique is primarily used to transform readable data into an unreadable format?

    <p>Encryption</p> Signup and view all the answers

    What distinguishes asymmetric cryptography from symmetric cryptography?

    <p>Asymmetric uses different keys for encryption and decryption.</p> Signup and view all the answers

    What is the main purpose of using cloud security monitoring tools?

    <p>To detect and respond to suspicious activities.</p> Signup and view all the answers

    Which of the following correctly describes the term 'keys' in cryptography?

    <p>Keys can be symmetric or asymmetric.</p> Signup and view all the answers

    What is the process of converting ciphertext back into plaintext called?

    <p>Decryption</p> Signup and view all the answers

    What distinguishes the focus of VPNs from cloud security measures?

    <p>VPNs provide secure connections and privacy primarily for individual users; cloud security addresses broader infrastructure concerns.</p> Signup and view all the answers

    Which of the following statements about encapsulating data confidentiality is correct?

    <p>It involves using cryptographic methods like encryption.</p> Signup and view all the answers

    What is the main purpose of data encryption in cloud security?

    <p>To ensure data confidentiality and protect against unauthorized access</p> Signup and view all the answers

    How does Identity and Access Management (IAM) enhance cloud security?

    <p>By managing user identities and controlling access based on roles</p> Signup and view all the answers

    What is a key requirement for cloud services to operate legally?

    <p>Cloud services must adhere to compliance and regulatory requirements</p> Signup and view all the answers

    Why is regular data backup important in cloud security?

    <p>It ensures data can be restored in case of loss or corruption</p> Signup and view all the answers

    Which of the following is an example of a compliance requirement in cloud security?

    <p>Ensuring adherence to regulations like HIPAA or GDPR</p> Signup and view all the answers

    What is a use case for Identity and Access Management (IAM)?

    <p>Preventing unauthorized access by managing user roles</p> Signup and view all the answers

    How does data encryption specifically protect customer data in the cloud?

    <p>By converting data into a format that is unreadable without a key</p> Signup and view all the answers

    Which aspect of cloud security is focused on disaster recovery?

    <p>Regular data backup and recovery plans</p> Signup and view all the answers

    Study Notes

    Bus Topology

    • All devices connect to a single central cable called the "bus."
    • Data travels along the bus to all devices, but only the intended recipient processes it.
    • Simple installation and cost-effective due to minimal cabling.
    • Adding or removing devices is straightforward and does not disrupt the network.
    • Limited cable length restricts the number of supported devices.
    • A single point of failure exists: if the bus cable fails, the entire network ceases to function.
    • Ideal for small networks or temporary setups, like labs or classrooms.
    • Example use case: A small office connecting a few computers to a printer and server.

    Star Topology

    • All devices are connected to a central hub or switch.
    • Data from devices must pass through the hub to reach its destination.
    • Easy management and troubleshooting; failure of one device or cable doesn't affect the entire network.
    • Scalable and allows for easy expansion by adding more devices to the hub.
    • Dependence on the central hub means its failure disrupts the entire network.
    • Requires more cabling than bus topology, potentially increasing costs.
    • Commonly used in homes and small to medium-sized businesses for reliability and maintenance.
    • Example use case: A corporate office connecting departments to a central switch.

    Ring Topology

    • Devices form a circular data path, connecting to two other devices each.
    • Data travels in one direction or both (dual-ring) until it reaches its destination.
    • Reduces chances of data collisions due to orderly data flow.
    • Example use case: Government and healthcare community clouds for regulatory compliance and secure data management.

    Key Cloud Providers

    • Amazon Web Services (AWS): A major cloud service provider with a wide range of services, includes Amazon EC2 (virtual servers) and Amazon S3 (object storage).
    • Microsoft Azure: Offers cloud services including computing and analytics; integrates well with Microsoft software, features Azure Virtual Machines and Azure SQL Database.
    • Google Cloud Platform (GCP): Known for data analytics and machine learning; offers Google Compute Engine for scalable virtual machines.

    Cloud Security

    • Protects data, applications, and services in the cloud from threats.

    Key Concepts

    • Data Encryption: Encrypts data at rest and in transit to maintain confidentiality.
      • Use case: Protecting sensitive customer data in cloud databases.
    • Identity and Access Management (IAM): Controls user access to cloud resources based on roles.
      • Use case: Preventing unauthorized access by setting role-based controls.
    • Compliance and Regulatory Requirements: Ensures compliance with regulations like GDPR or HIPAA.
      • Use case: Protecting patient data in healthcare organizations.
    • Data Backup and Recovery: Regular backups and disaster recovery plans to restore lost or corrupted data.
      • Use case: Personal data safety from accidental deletion or cyberattacks.
    • Threat Detection and Response: Tools to identify and respond to security threats in real-time.
      • Use case: Proactively managing security incidents with monitoring tools.

    Cryptography

    • Secures information by transforming it into ciphertext format for authorized access only.

    Key Concepts

    • Encryption: Converts plaintext into ciphertext using algorithms and keys.
      • Example: Encrypting emails with public keys.
    • Decryption: Converts ciphertext back to plaintext using decryption keys.
      • Example: Accessing original content from received encrypted files.
    • Keys: Symmetric (same key) and asymmetric (different keys) are used in encryption/decryption.
      • Examples: AES (symmetric) and RSA (asymmetric).

    Virtual Private Network (VPN)

    • Provides secure, encrypted connections over insecure networks.

    Key Concepts

    • VPN Appliances: Hardware devices providing VPN services for networks, like Cisco ASA.
    • VPN Software: Applications providing VPN functions on devices, such as ExpressVPN.
    • Use case: Securing remote access to corporate networks.

    Security Information and Event Management (SIEM)

    • Aggregates and analyzes security data from various sources to manage security incidents.

    Key Concepts

    • SIEM Platforms: Systems for security data collection and analysis, such as Splunk Enterprise Security.
    • Log Management Tools: Focuses on collecting log data for analysis, like LogRhythm.
    • Use case: Centralizing security data for effective monitoring and response.

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    Description

    Explore the key characteristics of bus and star topologies in computer networking. This quiz covers their advantages, limitations, and ideal use cases for different networking environments. Test your understanding of these essential network configurations.

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