Week 4

Question 1

What is Ethernet?

Answer 1

Ethernet is a common way to connect computers and devices in a local area network (LAN), like in homes, schools, or offices.
*Available bandwidths: 10Mbps, 100Mbps, 1Gbps
*Hosts are connected using Bus and Star topologies

Question 2

Switched Ethernet def:

Answer 2

Switched Ethernet is an improved version of regular Ethernet that uses a network switch to connect devices more efficiently.

Question 3

Ethernet Frames:

Answer 3

-Preamble is a sequence of 7 bytes, each set to “10101010”
-Addresses (unique, 48-bit unicast address assigned to each adapter)
-The type field serves as a demultiplexing key, determining the higher-level protocol to which the frame should be routed.
-The body has the capacity to hold a maximum of 1500 bytes of data.

Question 4

Collision Detection def:

Answer 4

Collision detection is a way for computers in a network to know when two devices send data at the same time, which causes a collision.

Question 5

Pros and Cons of Ethernet:

Answer 5

✅ Pros (Advantages):
Fast Speeds
Stable Connection
Low Latency
Better Security
No Interference
❌ Cons (Disadvantages):
Limited Mobility
More Cables
Harder Setup
Not Ideal for All Devices

Question 6

What is IP Subnetting?

Answer 6

IP subnetting is the process of dividing a large IP network into smaller sub-networks (subnets) for efficient management and address allocation

Question 7

Why IP Subnetting is Important?

Answer 7

-Efficient Use of IP Addresses
-Improved Network Performance
-Simplified Network Management
-Improved Security and Segmentation
-Scalability and Flexibility

Question 8

Subnetting Fundamentals:

Answer 8

-Determining the Number of Subnets
-Analyze Network Requirements
-Consider Organizational Structure
-Evaluate Security Considerations
-Anticipate Future Growth
-Balance Efficiency and Manageability