CCNA V3 Semester 3 Chapter 4 Study Guidie

CCNA v3.0 Semester 3 Chapter 4 Study Guide

4.1 Introduction to Ethernet/802.3 LANs
4.1.1 / What is the purpose of a hub?
4.1.1 / What is the negative aspect of introducing a hub to a network?
4.1.1 / What is the purpose of a switch?
4.1.1. / What are the prerequisites for a collision free Ethernet segment?
4.1.1 / What is the disadvantage of a switch?
4.1.1 / What is the purpose of a router?
4.1.2 / What factors have impacted on network performance?
4.1.3 / Describe the frame delivery on 802.3 networks
4.1.3 / What is the purpose of CSMA/CD
4.1.3 / What types of applications can create network congestion?
4.1.3 / What increases the latency of frame transmission?
4.1.4 / What happens when a collision is detected on a 802.3 network?
4.1.5 / What can relieve network congestion?
4.1.6 / What causes latency?
4.1.7 / Define 1 bit time
4.1.8 / What creates a full duplex connection?
4.1.8 / Why is half-duplex Ethernet only 50—60% efficient?
4.1.8 / Why is full duplex Ethernet 100% efficiency?
4.2 LAN segmentation
4.2.1 / What is another name for a layer 2 LAN segment?
4.2.1 / What is the purpose of segmentation?
4.2.2 / What is the impact on a LAN of a bridge?
4.2.3 / How do switches & routers handle broadcasts?
4.2.4 / 4 hosts connected to a hub which connects to 1 switchport are part of what?
4.2.4 / What is a virtual circuit?
4.2.7 / Where is a switching table stored?
4.2.7 / What type of network offers more flexible traffic flow?
4.2.7 / What is “wire speed” switching
4.2.8 / What is the requirement of a switch that switches asymmetrically
4.2.9 / Why is shared memory buffering more efficient that port based?
4.2.10 / Describe store & Forward Switching
4.2.10 / Describe fast-forward cut through switching
4.2.10 / Describe fragment-free cut through switching
4.2.10 / Compare latency in the 3 different switching types
4.2.11 / Why is the latency of fragment-free and store and forward switching not necessarily undesirable?
4.3 Switch Operation
4.3.1 / How do switches ensure that users have more bandwidth?
4.3.3 / What happens when a switch is turned on?
4.3.3 / What information does a switch address table contain?
4.3.3 / How are timestamps used?
4.3.3 / What happens if a destination MAC address is not found on an address table?
4.3.4 / What is a broadcast storm?
4.3.6 / What effect do bridges and switches have on broadcast domains?
4.3.7 / What effect does microsegmentation have on collision domains?
4.3.8 / How many collision domains are created by a 24 port switch?