Network Foundations-Week 1 Flashcards
What is one advantage of the TCP/IP model over the OSI model?
Provides a standardized reference model for network communication, allows for interoperability among different vendors’ networking equipment and protocols.
Which of the following best describes the Transport layer in the OSI model?
Manages end-to-end communication between applications.
What is the DHCP protocol used for in computer networking?
DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to devices on a network.
What is a network topology?
A network topology describes the structure of a network and represents all the connections between all components in a network.
Logical port for HTTP
80
Logical port for HTTPS
443
Logical port for SSH
22
Logical port for SMB
445
What are the advantages of wireless networks?
Easy mobility, reduced cabling costs, and flexibility in device placement.
What are the differences between straight-through and crossover Ethernet cable configurations?
A straight-through Ethernet cable is used to connect devices of different types, such as a computer to a switch or a router to a modem, while a crossover Ethernet cable is used to connect devices of the same type, such as a computer to a computer or a switch to a switch.
What are the risks and vulnerabilities of wireless network security?
Unauthorized access, data interception, and network intrusion.
What are the three main logical port groups?
Well-known ports, Registered ports, and Dynamic/Private ports.
What are logical ports?
Virtual ports that are created by network devices to establish a connection between two physical devices.
In a 3-tier architecture, the core layer handles routing and switching functions, while the distribution layer handles access control and security functions, and the access layer handles end device connectivity. In a collapsed architecture, all these functions are combined into a single layer. TRUE OR FALSE?
False
Which intermediary device enables devices located in different networks to communicate with each other?
Router
TRUE OR FALSE?
The TCP protocol is an unreliable transport protocol that does not guarantee delivery of data, does not perform flow control or error checking, is suitable for applications that prioritize speed and efficiency such as real-time streaming and online gaming. On the other hand, the UDP protocol is a reliable transport protocol that guarantees delivery of data, establishes a connection-oriented communication, performs flow control and error checking, and is suitable for applications that require accurate data delivery such as web browsing and file transfer.
FALSE
What is a broadcast domain in networking?
A broadcast domain is a network area where broadcast messages are forwarded to all connected devices.
Which network spans across a large geographic area and is managed by multiple service providers?
WAN
TRUE OR FALSE? Each layer of the OSI model plays a crucial role in the network communication process and is important for enabling communication between devices.
TRUE
Which devices are most commonly used in layer 1 (the physical layer)?
Hubs and Repeaters
TRUE OR FALSE? The layered approach of the OSI model facilitates understanding and troubleshooting of network communication issues by allowing identification of the devices used at each layer, which aids in diagnosing problems and implementing solutions.
TRUE
What is the operation or function of layer 3 (the network layer)?
Responsible for the organization of data into packets with an IP source and destination for routing.
Which protocol is used to transfer text-based data, such as web pages, over the internet in a secure manner?
HTTPS
What is the difference between half duplex and full duplex communication in networking?
Half duplex communication restricts data transmission to one direction at a time, while full duplex communication allows data to be transmitted in both directions simultaneously.
Which protocol is used to transfer text-based data, such as web pages, over the internet in a secure manner?
HTTPS
