402 Flashcards
Assessment 2
What is the definition of networking?
Interconnection of computers and devices for sharing resources and information.
Name two types of networks other than LAN.
WAN (Wide Area Network) and MAN (Metropolitan Area Network).
List two examples of networking devices.
Router and Switch.
What is the purpose of a firewall in networking?
To protect networks by controlling incoming and outgoing traffic based on security rules.
Briefly explain the role of the network in cloud computing.
It connects users to cloud infrastructure, enabling access to resources and services.
What is the function of the Transport Layer in the OSI model?
Ensures reliable data transfer, flow control, and error handling between devices.
Name two protocols that operate at the Application Layer.
HTTP and FTP.
What is the main reason the TCP/IP model became more popular than the OSI model?
TCP/IP is simpler and better aligned with real-world networking practices.
What is the purpose of a network router?
To route data packets between different networks.
What is a VLAN (Virtual Local Area Network) used for?
To logically separate networks within a physical network infrastructure.
What is packet switching, and why is it important?
It divides data into packets sent independently, improving efficiency and robustness.
What are two types of routing strategies?
Fixed Routing and Adaptive Routing.
What is the main difference between Dijkstra’s Algorithm and Bellman-Ford Algorithm?
Dijkstra requires full network knowledge; Bellman-Ford works with local knowledge and multiple iterations.
In packet-switched networks, why is adaptive routing preferred over fixed routing?
Because it adapts to network changes, improving performance and resilience.
Name one advantage of the datagram approach over the circuit approach.
Higher flexibility and better resource utilization.
What does CSMA/CD stand for in Ethernet?
Carrier Sense Multiple Access with Collision Detection.
In Ethernet, what is the main role of a switch compared to a hub?
A switch reduces collisions by sending data only to the intended recipient.
What is the purpose of subnetting a network?
To divide a larger network into smaller, more manageable sub-networks.
In subnetting, why do we add 2 when calculating the required number of hosts?
To account for the network address and the broadcast address.
What is DNS spoofing?
An attack where DNS records are falsified to redirect traffic to malicious sites.
