Computer Networking Topologies Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is a major disadvantage of ring topology?

  • If a node fails, the entire network fails (correct)
  • Detecting a problem is complex
  • High data transmission speed
  • Can be easily expanded

Which statement accurately describes tree topology?

  • It is the least expensive topology available.
  • It combines elements of star and bus topologies. (correct)
  • It has no root node and is flat in structure.
  • Every node connects to every other node directly.

What is one of the main advantages of hybrid topology?

  • None of the topologies used can support error detection.
  • It is flexible and scalable. (correct)
  • It is strictly limited in scalability.
  • It is easy to design.

Why can point-to-point connections be considered more efficient than multipoint connections?

<p>The entire channel capacity is reserved for dedicated use. (A)</p> Signup and view all the answers

Which of the following is a primary disadvantage of tree topology?

<p>If the root node fails, the entire network collapses. (A)</p> Signup and view all the answers

Which characteristic does NOT apply to hybrid topology?

<p>Easy to design initially. (D)</p> Signup and view all the answers

What is a characteristic of multipoint connections?

<p>Allows simultaneous connections to a single transmitter. (C)</p> Signup and view all the answers

What is a common misconception about ring topology?

<p>It has a fast data transmission speed. (D)</p> Signup and view all the answers

What is the primary purpose of a computer network?

<p>To exchange information over the network (A)</p> Signup and view all the answers

Which factor does NOT contribute to the performance measurement of a network?

<p>Security measures (B)</p> Signup and view all the answers

What does packet loss indicate in a network?

<p>Failure of one or more packets to reach their destination (B)</p> Signup and view all the answers

Which type of connection provides a dedicated link between two devices?

<p>Point-to-point connection (C)</p> Signup and view all the answers

What does the application layer in the TCP/IP model primarily handle?

<p>User interface specifications and application communication (D)</p> Signup and view all the answers

What does reliability in a network measure?

<p>The frequency of failure and recovery time from failures (B)</p> Signup and view all the answers

Which protocol in the transport layer is known for being reliable and connection-oriented?

<p>Transmission Control Protocol (TCP) (B)</p> Signup and view all the answers

What is the primary function of the Internet/Network Layer in the TCP/IP model?

<p>Transporting packets from source to destination (B)</p> Signup and view all the answers

What is one of the main security issues faced in networks?

<p>Protecting data from unauthorized access (C)</p> Signup and view all the answers

In a distributed processing network, what happens to tasks?

<p>They are divided among multiple computers (B)</p> Signup and view all the answers

Which of the following statements accurately describes User Datagram Protocol (UDP)?

<p>Prioritizes speed over accuracy, offering an unreliable service (D)</p> Signup and view all the answers

What does transit time refer to in network performance?

<p>Time taken for a message to travel from one device to another (B)</p> Signup and view all the answers

What is the purpose of bit rate control in the physical layer of the network?

<p>To determine the number of bits sent per second (C)</p> Signup and view all the answers

What functionality does the Stream Control Transmission Protocol (SCTP) provide?

<p>Supports voice over the Internet and combines features of TCP and UDP (A)</p> Signup and view all the answers

Which layer of the TCP/IP model is responsible for process-to-process communication?

<p>Transport Layer (A)</p> Signup and view all the answers

Which of the following protocols is NOT typically associated with the application layer in the TCP/IP model?

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

What is one of the main advantages of a Local Area Network (LAN)?

<p>It is secure because there is no outside connection. (C)</p> Signup and view all the answers

Which network type connects multiple devices in a larger geographical area than a LAN but smaller than a WAN?

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

What is a disadvantage of a Metropolitan Area Network (MAN)?

<p>It can be expensive to set up and maintain. (A)</p> Signup and view all the answers

Which of the following statements about a Wide Area Network (WAN) is true?

<p>It provides long-distance transmission of data. (C)</p> Signup and view all the answers

What is a primary function of a Local Area Network (LAN)?

<p>Connecting devices in the same geographical area for resource sharing. (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of LANs?

<p>They can experience significant security issues. (C)</p> Signup and view all the answers

What defines a Wide Area Network (WAN)?

<p>It can cover large geographical regions, including countries and continents. (C)</p> Signup and view all the answers

What potential issue can occur with increased usage in a Metropolitan Area Network (MAN)?

<p>Congestion and performance issues. (C)</p> Signup and view all the answers

What is the primary purpose of encryption in data transmission?

<p>To maintain privacy of the information (A)</p> Signup and view all the answers

Which of the following best describes the function of the session layer in networking?

<p>Creating communication channels called sessions (A)</p> Signup and view all the answers

What is the main function of the Internetworking Protocol (IP)?

<p>To deliver packets from source to destination (D)</p> Signup and view all the answers

Which protocol is utilized to discover a device's MAC address from its IP address?

<p>ARP (A)</p> Signup and view all the answers

Which of the following statements accurately describes TCP in the transport layer?

<p>It ensures reliable, connection-oriented communication. (C)</p> Signup and view all the answers

What is the purpose of the Reverse Address Resolution Protocol (RARP)?

<p>To find a device's IP address from its MAC address (C)</p> Signup and view all the answers

What role does flow control play in the transport layer?

<p>It matches the sending rate to the receiver's processing speed. (C)</p> Signup and view all the answers

Which of the following is a characteristic of connectionless service in the transport layer?

<p>There is no guarantee that packets will arrive in order. (C)</p> Signup and view all the answers

Which of the following best describes the Internet Control Message Protocol (ICMP)?

<p>Sends control and error reporting messages (B)</p> Signup and view all the answers

What is the role of the Internet Group Message Protocol (IGMP)?

<p>To send messages to multiple recipients simultaneously (D)</p> Signup and view all the answers

What is the primary function of the network layer?

<p>To transport packets from source to destination (D)</p> Signup and view all the answers

Which function of the transport layer involves dividing messages into smaller segments?

<p>Segmentation and reassembly (C)</p> Signup and view all the answers

Which model is independent and serves as a generic communication gateway between the network and the end user?

<p>OSI Model (D)</p> Signup and view all the answers

In the context of data compression, what does the process achieve?

<p>Reduces the number of bits transmitted (C)</p> Signup and view all the answers

What was the primary purpose of the TCP/IP model?

<p>To promote communication between diverse networks (A)</p> Signup and view all the answers

Which of the following layers in the TCP/IP model encompasses both the physical and data link layers of the OSI model?

<p>Network Access/Link Layer (B)</p> Signup and view all the answers

Flashcards

Network node

A device connected to a computer network, such as a computer, printer, or smartphone.

Network performance

The ability of a network to deliver data reliably and efficiently.

Transit time

The time it takes for a message to travel from one device to another.

Network throughput

The amount of data that can be successfully transmitted over a network within a specific time period.

Signup and view all the flashcards

Packet loss

The failure of one or more data packets to reach their destination.

Signup and view all the flashcards

Network security

The ability of a network to protect data from unauthorized access, damage, and loss.

Signup and view all the flashcards

Point-to-point connection

A dedicated communication link between two devices.

Signup and view all the flashcards

Multipoint connection

A communication channel shared by multiple devices.

Signup and view all the flashcards

Local Area Network (LAN)

A group of computers connected within a limited area, like a school or office, for sharing resources like printers and files.

Signup and view all the flashcards

Metropolitan Area Network (MAN)

A network that connects devices over a larger geographic area, like a city, but smaller than a WAN.

Signup and view all the flashcards

Wide Area Network (WAN)

A network that connects devices over very long distances, spanning countries or the entire world.

Signup and view all the flashcards

LAN Speed

LANs are faster due to their smaller size, with speeds ranging from 100 to 1000 Mbps.

Signup and view all the flashcards

LAN Setup

LANs are typically easier to set up and manage than larger networks.

Signup and view all the flashcards

LAN Security

LANs are generally more secure because they are isolated from external connections, protecting data.

Signup and view all the flashcards

MAN Advantages

MANs provide high-speed connectivity over a larger geographic area, making them suitable for multiple customers.

Signup and view all the flashcards

WAN Feature

WANs, such as the Internet, offer long-distance data transmission across countries or the world.

Signup and view all the flashcards

Ring Topology

A network topology where data travels in a single direction, like a circular path. If one device fails, the entire network goes down.

Signup and view all the flashcards

Star Topology

A network topology where all devices connect directly to a central hub, creating a star-like pattern. If the hub fails, the entire network is affected.

Signup and view all the flashcards

Bus Topology

A network topology where devices are connected in a linear chain, like a bus. Data travels in both directions. If one device fails, it might isolate other devices connected to it.

Signup and view all the flashcards

Tree Topology

A network topology that combines elements of bus and star topologies. It's hierarchical, with a root node at the top and branch nodes branching out.

Signup and view all the flashcards

Hybrid Topology

A network topology that combines two or more different network types. It offers flexibility and scalability, but can be complex to design and expensive.

Signup and view all the flashcards

Bidirectional Data Flow

A mechanism that allows data to travel in both directions on a single communication channel.

Signup and view all the flashcards

Encryption

The process of converting data into a form that can only be read by authorized individuals with a decryption key.

Signup and view all the flashcards

Data compression

A process of reducing the size of data by using algorithms to remove redundancy.

Signup and view all the flashcards

Session layer

A layer in the OSI model that establishes and manages communication sessions between devices.

Signup and view all the flashcards

Transport layer

A layer in the OSI model responsible for delivering data packets between processes on different devices.

Signup and view all the flashcards

TCP (Transmission Control Protocol)

A protocol in the transport layer that provides reliable, ordered delivery of data.

Signup and view all the flashcards

UDP (User Datagram Protocol)

A protocol in the transport layer that provides a connectionless, best-effort delivery service.

Signup and view all the flashcards

Network layer

A layer in the OSI model responsible for routing data packets between networks.

Signup and view all the flashcards

What does the Physical Layer define in a network?

The physical layer is concerned with the transmission of data over a physical medium. It defines how data is physically encoded into signals, the type of signals used, and the transmission rate.

Signup and view all the flashcards

What is network topology?

Topology refers to the arrangement of network devices and how they connect to form a network. Common examples include bus, star, and ring topologies.

Signup and view all the flashcards

What is TCP/IP?

TCP/IP is a suite of protocols that enables communication between devices across different networks. It is used for the internet and many other networks.

Signup and view all the flashcards

What is the role of the Application Layer in TCP/IP?

The application layer is responsible for providing services to applications. It includes protocols like HTTP, FTP, and SMTP that handle tasks like web browsing, file transfer, and email.

Signup and view all the flashcards

What is the purpose of the Transport Layer in TCP/IP?

The transport layer provides reliable and connection-oriented communication. It ensures data is delivered correctly and in order. TCP is a key protocol in this layer.

Signup and view all the flashcards

What is the role of the Internet Layer in TCP/IP?

The internet layer is responsible for routing data packets from source to destination across the network. IP (Internet Protocol) is the main protocol in this layer.

Signup and view all the flashcards

What is the responsibility of the Network Access/Link Layer in TCP/IP?

The Network Access/Link Layer handles communication between devices on the same local network. It's responsible for data transmission over the physical network.

Signup and view all the flashcards

What is the key difference between TCP and UDP?

The main difference between TCP and UDP is that TCP provides reliable and connection-oriented communication, while UDP is unreliable and connectionless.

Signup and view all the flashcards

What is the primary function of IP (Internetworking Protocol)?

The main task of IP is to deliver packets from the source to the destination based on the IP addresses available in the packet headers.

Signup and view all the flashcards

What does ARP (Address Resolution Protocol) do?

ARP (Address Resolution Protocol) is used to find the MAC (Media Access Control) address of a device from its IP address.

Signup and view all the flashcards

What is the purpose of RARP (Reverse Address Resolution Protocol)?

RARP (Reverse Address Resolution Protocol) allows a host to discover its IP address when it only knows its physical (MAC) address.

Signup and view all the flashcards

What kind of messages does ICMP (Internet Control Message Protocol) send?

ICMP (Internet Control Message Protocol) is used to send control messages, such as error reports and queries, to network devices and hosts.

Signup and view all the flashcards

What is the function of IGMP (Internet Group Message Protocol)?

IGMP (Internet Group Message Protocol) facilitates simultaneous message transmission to a group of recipients.

Signup and view all the flashcards

What does the Network Access/Link Layer do in the TCP/IP model?

The Network Access/Link Layer in TCP/IP combines the functions of the physical and data link layers in the OSI model. It defines how data is physically transmitted through a network.

Signup and view all the flashcards

Which organization developed the TCP/IP model?

The TCP/IP model was developed by ARPANET (Advanced Research Projects Agency Network). It is a set of standard protocols that led to the development of the internet.

Signup and view all the flashcards

What is the purpose of the OSI model?

The OSI model (Open Systems Interconnection) is an independent, generic protocol standard used as a communication gateway between the network and the end user.

Signup and view all the flashcards

Study Notes

Data Communication

  • Data communication is the transfer of data from a source to one or more receivers through a communication medium, following a set of rules (protocol).
  • Key components of a data communication system are message, sender/transmitter, receiver, transmission medium, and protocol.

Data Representation Forms

  • Information transmitted can be text, numbers, images, audio, or video.
  • Text is represented as bit patterns (sequences of 0s and 1s).
  • Different sets of bit patterns code various symbols, like ASCII, or Unicode, used to represent text.
  • Numbers are represented directly in binary to simplify mathematical operations.
  • Images are composed of a matrix of pixels (picture elements), where each pixel is a small dot.
  • Image resolution affects representation quality and storage size.
  • Audio refers to recorded or broadcast sound or music. This information is often converted to digital or analogue signals.
  • Video encompasses recordings of pictures or movies; these may be continuous entities (e.g., a TV camera) or a combination of images for motion representation.

Data Flow Methods

  • Data flow (transmission mode) defines the direction of information flow between devices.
  • Three transmission modes are Simplex, Half-duplex, and full duplex.
  • Simplex is unidirectional (one-way communication).
  • Half-duplex is bidirectional, but not simultaneous in either direction.
  • Full-duplex is bidirectional and allows simultaneous transmission and reception in both directions.

Computer Network

  • A computer network connects multiple computing devices using a transmission medium (e.g., wires, cables, radio waves).
  • Each device is a node.
  • Networks are crucial for information exchange.
  • Network performance factors include response time, transit time, and delay.

Network Criteria/Attributes

  • Performance metrics include response time (time between inquiry and response), transit time (time for a message to travel between devices), and delay (time taken for a packet to traverse from source to destination).
  • Reliability considers the frequency of failures, recovery time, and the network's ability to remain functional.
  • Security encompasses protecting data from unauthorized access or damage.
  • Throughput measures the amount of successful packet delivery within a set time period.
  • Packet loss occurs when one or more packets fail to reach their intended destination.

Network Topologies

  • Topology defines how network components are interconnected.
  • Common topologies include Mesh, Star, Bus, Ring, Tree, and hybrid
  • Mesh: every node is connected to every other node.
  • Star: all nodes connect to a central hub.
  • Bus: nodes are connected along a single cable.
  • Ring: nodes form a closed loop.
  • Tree: hierarchical structure combining elements of bus and star topologies.
  • Hybrid: combines elements of other topologies.

Network Types

  • Local Area Network (LAN) is a group of connected devices within a limited area (e.g., home, office, school). LANs support file and hardware resource sharing. The transmission speed of a LAN is higher than other network types.
  • Metropolitan Area Network (MAN) spans a broader area such as a city or a group of towns to connect multiple LANs. A MAN is typically used to provide fast data transmission between different locations in a city or a similar geographical area.
  • Wide Area Network (WAN) extends over a large geographical area (country, continent or the entire world). Internet and other global networks are examples of WANs. WANs are usually less efficient than LANs, and the transmission speed is lower.

OSI/ISO Reference Model

  • The OSI model is a conceptual framework for how applications communicate over a network. It is a layered architecture that specifies how different protocols in each layer interact with each other. It is not actually used in the industry.
  • The TCP/IP model is a more practical, less generalised, conceptual model that describes data transmission over Internet in terms of four layers: Application, Transport, Internet, and Network Access.

Protocols Examples

  • TCP/IP: used for communication over the Internet.
  • UDP: used to send data faster but not securely
  • HTTP, HTTPS, FTP, Telnet, SSH, SMTP, SNMP are application-level protocols.
  • ARP and RARP are used in the network layer to convert between IP and physical addresses.
  • ICMP, IGMP provide error messages and support for multicasting, respectively.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Data Communication PDF

More Like This

Use Quizgecko on...
Browser
Browser