Flashcards in Chapter 11 Deck (12):
What is the difference between a bridge and a switch?
- a switch is a hardware device that filters and forwards network packets, but often not capable of much more.
-a bridge is a device that connects two local-area networks (LANs), or two segments of the same LAN. Unlike a router, bridges are protocol -independent. They forward packets without analyzing and re-routing messages. switches uses application specific integrated circuit ( ASICs)
what is the reason of having bridges and switches?
the reason of having switches and bridges is to to break up collision domains.
both switches and bridges forward layer 2 broadcasts. T/F
bridges are software based and switches are hardware based. T/F
what are the 3 switches functions at layer 2?
Spanning Tree Protocol:
STP is a networking protocol. It creates a single path over a network, preventing any loops from occurring, even if there are multiple paths to the same destination.
in another word STP is a layer 2 protocol that is used to maintain a loop free switched network.
the IEEEE has its own version of STP, what is it?
by default most switches run on 802.1D version of STP. T/F
this is a new vestion of STP, it is faster then 802.1D and is not enable by default on any switches/
What is Broadcast Storm?
A state in which a message that has been broadcast across a network results in even more responses, and each response results in still more responses in a snowball effect. A severe broadcast storm can block all other network traffic, resulting in a network meltdown. Broadcast storms can usually be prevented by carefully configuring a network to block illegal broadcast messages.
The ports on a switch with enabled Spanning Tree Protocol (STP) are in one of the following five port states: