ITT300 Chapter 1 Quiz & Flashcards

Questions and Answers

Which protocol suite is fundamental to the operation of the Internet?

SMTP/POP3

TCP/IP (correct)

FTP/SFTP

HTTP/HTTPS

What does the syntax of a protocol refer to?

The structure or format of data (correct)

The meaning of each section of bits

The timing of data transmission

The method of establishing a connection

Which component of a protocol deals with the meaning of data sections?

Semantics (correct)

Routing

Syntax

Timing

What key aspect of a protocol specifies when data should be sent?

Timing Signup and view all the answers

What is the primary purpose of Internet Protocol (IP)?

To ensure all computers can communicate regardless of their technology Signup and view all the answers

What is one major disadvantage of bus topology?

Limited cable length Signup and view all the answers

Which of the following accurately describes the data transmission method in a bus topology?

Data is received by all nodes simultaneously. Signup and view all the answers

What is a characteristic feature of a ring topology?

Closed loop structure with two connections per node Signup and view all the answers

Which statement best describes the performance of ring topology compared to bus topology?

Ring topology has better performance than bus topology. Signup and view all the answers

What is a significant security concern in bus topology?

All nodes can access each other's data Signup and view all the answers

What happens if a node fails in a ring topology?

The entire network becomes inoperable. Signup and view all the answers

What is the role of the transmission medium in data communication?

It is the path through which the message travels. Signup and view all the answers

What distinguishes full-duplex communication from half-duplex communication?

Both devices can transmit simultaneously in full-duplex. Signup and view all the answers

Which of the following best describes 'response time' in a network?

It refers to the elapsed time between an inquiry and a response. Signup and view all the answers

Which of the following best defines a network?

A set of devices connected by communication links. Signup and view all the answers

In half-duplex communication, when one device is transmitting, what can the other device do?

Only receive. Signup and view all the answers

What factors influence the performance criteria of a network?

The capability of hardware and efficiency of software. Signup and view all the answers

What does reliability in a network primarily measure?

Time to recover from failure Signup and view all the answers

Which of the following best describes a point-to-point connection?

A dedicated link between two devices Signup and view all the answers

What type of network topology connects each node directly to every other node?

Mesh topology Signup and view all the answers

What is a major disadvantage of star topology?

Single point of failure Signup and view all the answers

Which term refers to the layout of the arrangement of nodes in a computer network?

Physical topology Signup and view all the answers

What critical aspect does security in a network focus on?

Protecting data from unauthorized access Signup and view all the answers

Which of the following networking setups allows several devices to use the link simultaneously?

Multipoint connection Signup and view all the answers

What is a common issue faced with broadcasting messages in mesh topology?

Network congestion Signup and view all the answers

What happens when a sender produces data at 100Mbps and the receiver can only process data at 1 Mbps?

The transmission will overload the receiver, leading to data loss. Signup and view all the answers

Which type of standard is defined by widespread use rather than formal approval?

De facto standard Signup and view all the answers

Which of the following is an example of a de jure standard?

ASCII character set Signup and view all the answers

What is the function of standards creation committees?

To develop and approve formal standards. Signup and view all the answers

Which of the following standards is related to networking technology?

Wireless 802.11n Signup and view all the answers

Study Notes

Communication Devices and Protocols

Devices include computers, workstations, telephones, televisions, etc.
Receiver: device that accepts messages.
Transmission medium: physical path for messages between sender and receiver.
Protocol: rules governing data communications between devices.

Data Flow Types

Simplex: Unidirectional communication; one device transmits while the other only receives (e.g., keyboard and monitor).
Half-Duplex: Devices can both send and receive, but not simultaneously (e.g., walkie-talkies).
Full-Duplex: Devices can transmit and receive messages simultaneously (e.g., telephones).

Networks

Network: set of interconnected devices referred to as nodes.
Distributed processing divides tasks among multiple computers.
Criteria for performance involve transit time (message travel time) and response time (time between inquiry and response).
Reliability involves failure frequency and recovery time from failures.
Security measures protect data against unauthorized access and damage.

Communication Links

Point-to-point: Dedicated link between two devices.
Multipoint: Multiple devices share one link, can be used spatially or temporally.

Network Topologies

Physical Topology: Physical arrangement of nodes.
Logical Topology: Data flow dynamics in a network.

Mesh Topology

All nodes interconnected, providing fault tolerance and reliability.
Advantages include high reliability; disadvantages involve cost and impracticality.

Star Topology

Central node (hub/switch) connects all other nodes.
Advantages: easy design, scalability, centralized administration.
Disadvantages: single point of failure, potential bottleneck, increased costs due to central devices.

Bus Topology

Common medium for data transmission among all nodes.
Advantages: cost-effective due to single wire, temporary network suitability.
Disadvantages: no fault tolerance, security issues, limited cable length.

Ring Topology

Closed-loop, each node connected to two neighbors.
Performance superior to bus topology but has a single point of failure.

The Internet

Originated from ARPANET, developed by the US Department of Defense in 1969.
Utilizes packet switching technology, contrasting with circuit switching in traditional telephony.
Connected networks use Internet Protocol (IP) for communication.

Protocols

Define what, how, and when communications occur.
Key elements include:
- Syntax: Structure/format of data.
- Semantics: Meaning of data sections and their interpretation.
- Timing: When and how fast data is transmitted.

Standards

Ensure interoperability among devices and networks.
Types of standards:
- De facto: Established by widespread use but not officially approved (e.g., XML).
- De jure: Legally recognized by standard organizations (e.g., TC/IP protocol).

Standard Organizations

Include committees and regulatory agencies shaping communication standards.
Examples include the International Organization for Standardization (ISO), which standardizes technologies globally.

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Description

Explore the foundational technologies of the Internet, including its origins in the ARPANET and the development of robust protocols like TCP/IP. This quiz delves into key innovations such as packet switching and their impact on network connectivity. Test your knowledge of this critical aspect of modern communication!

ITT300 - Chapter 1