Computer Networking Concepts
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Questions and Answers

What is a major consequence of network or internet failure for an organization?

  • Network infrastructure becomes overly complicated
  • Transactions and operations are halted during downtime (correct)
  • Employees become less productive immediately
  • Sales spikes occur during downtime

What benefit does regular network maintenance provide?

  • Identifying and repairing faulty cables and devices before they cause problems (correct)
  • Creating additional network bottlenecks
  • Reducing internet capacity to enhance speed
  • Increasing the need for employee network training

What could occur if a company fails to address frequent network failures?

  • It will create an environment of consistent productivity
  • It could enhance marketplaces for new clients
  • It will improve employee morale significantly
  • It could lead to a damaged reputation and loss of trust among clients (correct)

Which action is considered a best practice in avoiding phishing attacks?

<p>Double-checking the URL of suspicious links before clicking (C)</p> Signup and view all the answers

What impact can strict network security measures have on a company?

<p>Possibly discouraging operational flow due to tight controls (B)</p> Signup and view all the answers

How can frequent internet and network failures impact a company's reputation?

<p>They can damage the company's reputation and imply negligence (B)</p> Signup and view all the answers

What is one method to prevent network downtime and its associated costs?

<p>Perform occasional internet checks and maintain cables (A)</p> Signup and view all the answers

What can happen if a business fails to meet deliverables on time due to network failure?

<p>It could face legal repercussions (B)</p> Signup and view all the answers

What is the role of a Firewall in network security?

<p>It monitors and filters incoming and outgoing network traffic to protect against unauthorized access (B)</p> Signup and view all the answers

Which of the following best describes an Intrusion Detection System (IDS)?

<p>A system that scans for known malicious activity and alerts the network administrator (D)</p> Signup and view all the answers

What does the term 'forward secrecy' refer to in WPA3?

<p>It prevents decryption of past sessions even if a server’s private key is compromised (D)</p> Signup and view all the answers

What is a potential consequence of failing to implement enhanced security measures?

<p>Revenue loss (D)</p> Signup and view all the answers

Which of the following indicates a poor approach to network management?

<p>Ignoring system alerts and notifications (B)</p> Signup and view all the answers

What is the main benefit of protecting users' personal data online?

<p>It protects users' personal data from identity theft and malicious activity (C)</p> Signup and view all the answers

Which of the following actions does NOT contribute to protecting internet privacy?

<p>Ignoring social media privacy settings (D)</p> Signup and view all the answers

What is the primary purpose of a Virtual Private Network (VPN)?

<p>To encrypt incoming and outgoing internet traffic (B)</p> Signup and view all the answers

What practice is most effective for limiting personal information shared on social media?

<p>Setting your social media accounts to private (C)</p> Signup and view all the answers

What does Multi-factor Authentication (MFA) provide for user accounts?

<p>Adds an extra verification step to log in to an account (B)</p> Signup and view all the answers

Which feature is characteristic of Wi-Fi Protected Access 3 (WPA3)?

<p>It encrypts past sessions even if the server’s private key is compromised (B)</p> Signup and view all the answers

How does an Intrusion Detection System (IDS) contribute to network security?

<p>By monitoring and analyzing network traffic for malicious activity (D)</p> Signup and view all the answers

What is one of the potential effects of internet and network failures for businesses?

<p>Reduced communication with clients (C)</p> Signup and view all the answers

Which of the following best describes Star Topology?

<p>All devices are connected to a central hub or switch. (B)</p> Signup and view all the answers

What occurs in a Mesh Topology when a device fails?

<p>The network can still operate via alternate paths. (A)</p> Signup and view all the answers

Which of the following is not an advantage of wired networks over wireless networks?

<p>Greater mobility (B)</p> Signup and view all the answers

What is a primary disadvantage of Token Ring topology?

<p>If an error corrupts the token, communication can stop. (B)</p> Signup and view all the answers

Which of the following is not a common function of a Router?

<p>Connecting wireless devices to wired networks (B)</p> Signup and view all the answers

A Wi-Fi Modem combines the functionality of which two devices?

<p>Modem and Router (D)</p> Signup and view all the answers

Which OSI layer is responsible for creating packets with routing information?

<p>Network Layer (D)</p> Signup and view all the answers

In a Bus Topology, how do devices share the communication medium?

<p>All devices share the same communication medium, leading to potential data collisions. (B)</p> Signup and view all the answers

What is the primary purpose of computer networking?

<p>To enable web browsing, sending emails, sharing files, and downloading media (B), To link computers for shared resources (C)</p> Signup and view all the answers

Which network category is used to connect devices within a single building or a limited area?

<p>Local Area Network (LAN) (D)</p> Signup and view all the answers

Which of the following networks spans multiple cities or large geographic areas?

<p>Metropolitan Area Network (MAN) (B)</p> Signup and view all the answers

What is the role of the Transport Layer in the OSI Model?

<p>Ensures error-free end-to-end delivery of data (C)</p> Signup and view all the answers

Which layer of the OSI model is responsible for translating data between different formats for applications?

<p>Presentation Layer (C)</p> Signup and view all the answers

What is the function of the Data Link Layer in the OSI model?

<p>Manages error recovery, flow control, and data sequencing (B)</p> Signup and view all the answers

Which of the following is true about Wireless Networks compared to Wired Networks?

<p>Wireless networks provide mobility but can be slower and have potential security issues. (D)</p> Signup and view all the answers

What does a Hub do in a wired network?

<p>Broadcasts data to all devices connected to it (D)</p> Signup and view all the answers

Flashcards

Purpose of Computer Networking

Sharing resources and communication between computers (e.g., internet access, file sharing).

LAN

A local network connecting devices in a limited area (e.g., office, building).

Data Center Network Role

Connects data servers and allows access to resources from various users' devices.

Transport Layer (OSI)

Ensures data is delivered reliably, free of errors.

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Presentation Layer (OSI)

Formats data for applications; converts different formats to be used together in a common way.

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Data Link Layer (OSI)

Manages data transmission, ensuring error-free communication between devices on a network.

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Wireless vs. Wired Networks

Wireless networks offer mobility but may be slower and less secure compared to wired connections.

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Network Hub Function

Broadcasts data to all devices connected to it, not directing data to a specific recipient.

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Star Topology

Network topology where all devices are connected to a central hub or switch.

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Mesh Topology Device Failure

The network can still operate via alternate paths if a device fails.

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Wired Networks vs. Wireless Networks (Advantage)

Wired networks offer faster data transfer speeds and are less susceptible to external interference.

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Token Ring Topology Disadvantage

If an error corrupts the token, communication on the network can stop.

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Router Function (Not)

Assigning IP addresses to devices on the network is NOT a primary function of a router. Routers primarily manage network traffic between subnets.

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Wi-Fi Modem Combination

A Wi-Fi modem combines the functionality of a modem and a router.

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OSI Layer: Packet Routing

The Network Layer in the OSI model creates packets with routing information.

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Point-to-Point Topology Connection

Two devices are directly connected to each other, without a central hub or switch

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Internet Privacy Importance

Protecting personal data from theft, hacking, and other online threats. It ensures your information stays safe and secure.

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Social Media Privacy Setting

Controlling who can see or access your information on platforms like Facebook, Instagram, etc.

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VPN Function

Encrypts your internet traffic, making it unreadable to others, protecting your privacy and security online.

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Multi-Factor Authentication (MFA)

An extra security layer that adds a second verification step (like a code or fingerprint) to your login process, making it harder for unauthorized access.

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WPA3 Encryption

A Wi-Fi security protocol that encrypts past network sessions even if the network's private key is compromised, preventing data leaks.

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Intrusion Detection System (IDS) Role

Monitors and analyzes network traffic for suspicious activity to identify and prevent cyber attacks.

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Network Failure Impact

Disruption to business operations, productivity loss, and potential financial consequences due to lack of connectivity or data.

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Best Practice: Limiting Personal Information

Setting social media accounts to private so only approved individuals can see your posts, photos, and personal data.

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Impact of Network Failure

Frequent network problems can damage a company's reputation, giving the impression of negligence and a lack of reliability.

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Network Downtime Prevention

Regular checks and maintenance of cables and devices are crucial to prevent network outages and associated costs.

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Consequences of Missed Deliverables

Network failures causing late deliveries may lead to legal consequences, as businesses might be in breach of contracts.

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Firewall's Role

A firewall protects a network by filtering incoming and outgoing traffic, blocking unauthorized access.

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Intrusion Detection System (IDS)

An IDS scans for malicious activity on a network and alerts administrators, helping to mitigate security threats.

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Forward Secrecy (WPA3)

Forward secrecy ensures past network sessions remain protected even if a server's private key is compromised, increasing security.

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Revenue Loss

Network issues can lead to revenue loss due to downtime, service interruptions and customer dissatisfaction.

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Enhanced Security Measures

Improved security measures can help prevent network failures and protect a company from attacks.

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How does regular network maintenance prevent downtime costs?

By proactively identifying and repairing faulty cables or devices before they cause problems, regular maintenance helps avoid costly downtime.

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What's the impact of ignoring frequent network issues?

Ignoring network issues can lead to damage to a company's reputation and loss of trust among customers.

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Why can phishing be dangerous?

Phishing attempts to trick you into giving away personal information by disguising it as a legitimate source.

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How to avoid phishing attacks?

Always double-check the URLs of links before clicking to make sure they are legitimate.

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Study Notes

Computer Networking Concepts

  • Primary purpose of computer networking: To enable computers to share resources (email, files, media etc), and enable web browsing.

  • Network category for single building: Local Area Network (LAN).

  • Network spanning multiple cities: Metropolitan Area Network (MAN).

  • Data center network role: Linking multiple servers and data to be accessible to users in remote locations.

  • Transport Layer role (OSI Model): Ensures error-free end-to-end data delivery.

  • OSI layer for data translation: Presentation Layer.

  • Data Link Layer function: Manages error recovery, flow control, and data sequencing. It also defines electrical and mechanical connections.

  • Wireless vs. Wired Networks: Wireless networks provide mobility but can be slower and have potential security issues.

  • Hub function in wired networks: Broadcasts data to all connected devices.

  • Device responsible for monitoring network traffic and security: Firewall.

  • Star Topology description: All devices are connected to a central hub or switch.

  • Mesh Topology failure: The network can still operate via alternate paths.

  • Wired vs. Wireless Networks Advantage: Faster data transfer speeds and less susceptible to interference with wired networks.

  • Token Ring topology disadvantage: If an error corrupts the token, communication can stop.

  • Router Function: Forwarding data between networks, connecting wireless devices to wired networks, and assigning IP addresses.

  • Wi-Fi Modem components: Combines the functionality of a modem and a router.

  • OSI layer responsible for routing (packet creation): Network Layer.

  • Point-to-Point Topology: Two devices are directly connected.

  • Wired network device (not a router or switch): LAN Ethernet Cable.

  • Bus Topology Data Sharing: All devices share the communication medium, potentially leading to data collisions.

  • Importance of internet privacy: Protecting personal data from identity theft and malicious activity.

  • VPN function: Encrypts incoming and outgoing internet traffic.

  • Social Media Privacy Practices: Setting social media accounts to private, limiting personal information shared.

  • Multi-factor Authentication (MFA) function: Adds an extra verification step to log in to an account.

  • Wi-Fi Protected Access 3 (WPA3) Feature: Encrypts past sessions even if the server's private key is compromised.

  • Intrusion Detection System (IDS) function: Monitors and analyzes network traffic for malicious activity.

  • Consequence of network failure: Revenue loss.

  • Network Downtime Prevention: Regular monitoring of cables and devices, maintaining cables, and performing routine checks.

  • Network failure consequences for business: Possible legal repercussions from non-delivery of work and a damaged reputation.

  • Firewall function: Monitors and filters incoming and outgoing network traffic, protecting against unauthorized access.

  • Best practice to avoid phishing attacks: Double-checking the URL of suspicious links before clicking.

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Description

This quiz explores essential concepts of computer networking, including different types of networks such as LAN and MAN, as well as key roles within the OSI model. Learn about the functions of various layers and the differences between wired and wireless networks. Test your knowledge on networking fundamentals and their applications.

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