Chapter 5 BB Flashcards
What are three possible LEDs that can be found on a NIC? Pg 130-131
- A link-light, which is usually green and indicates when an ethernet connection is established and blinks when traffic is being passed back or forth
- Another indicates the speed of the connection: 10, 100, or 1000mbps
- Activity LED which flickers constantly
T/F When a broadcast is sent out on a star topology network, every device on that network both receives AND is able to read the broadcast. Pg 131
False. All devices on the network receive the message, but only the device that the broadcast is addressed to will be able to listen and process the message.
T/F Hubs are capable of recognizing frames and data structures. Pg 131
False.
What is a bridge? Pg 132
A bridge is a network device that connects two similar network segments together, while keeping the collision domains separate in order to avoid traffic.
Bridges only allow traffic through if it is addressed to a host on another network segment.
What is the difference between a transparent bridge and a switch? Pg 132
A transparent bridge is a software based bridge; acts as a bridge but is hardware based. The terms bridge and switch are often used interchangeably.
A switch connects multiple segments of a network together just like a hub, what are the three significant differences between a switch and a hub? Pg 132
- A switch recognizes frames and keeps track of the MAC address of the source and destination, as well as the port is was received.
- Switch makes each of its port a unique collision domain
- A switch will not broadcast out a frame to all ports, it will find the proper destination port and only send it through that port. If the destination port cannot be found, the switch will flood all ports other than the source port with the frame.
unmanaged vs managed switch? Pg 133
unmanaged: only performs the basic switching processes, does not allow an IP address to be configured nor special ports to be configured
What is another name for a layer 3 switch? Pg 133
A router
Can multilayer switches provide wired and wireless access for hosts including internet connectivity without configuration? Pg 133
Yes.
Do routers require their own software? Pg 134
Yes, routers have their own operating system (i.e. Cisco’s IOS) and can be thought of as CPUs that are dedicated to routing packets.
T/F Switches need IP address configuration. Pg 134
False. Switches only read to layer 2 and thus do not need IP configuration.
T/F Switch interfaces need configuration because they are NOT enabled by default and need information such as speed, duplex, and the type of ethernet cable.
False. Switch interfaces are enabled by default and can auto-detect that information.
What most be configured/considered regarding router installation? Pg 135
An IP address must be configured for each interface, interfaces are not enabled by default and must be enabled. A good layer 3 network design must be considered before installing a router.
