CH3 - Course Quiz Flashcards
The original Ethernet Networking technology standard was based on a Ring Topology?
True
False
False
A _______ is a special Spanning Tree Protocol (STP) frame that switches use to communicate with other Switches to prevent Switching Loops from happening in the first place?
Switch Protocol Data Unit (SPDU)
Repeater Protocol Data Unit (RPDU)
Bridge Protocol Data Unit (BPDU)
Root Bridge
Bridge Protocol Data Unit (BPDU)
How many pins does an RJ-45 Connector have?
6
4
8
2
8
How many pairs of wires in a cable did a 10Base-T device require?
4
6
8
2
2
When a collision occurs on a Network relying on the CSMA/CD access method, what alerts the Network Interface Cards (NICs)?
Spanning Tree Protocol
Cyclic Redundancy Check
Overlapping Signals
Multiple Access
Overlapping Signals
What is the max number of Nodes that could be attached to a 10Base-T hub?
1024
10
1000
16
1024
What is the min size of an Ethernet frame?
64 bytes
1024 bytes
1500 bytes
256 bytes
64 bytes
Which pins on an RJ-45 connector are used to Receive data?
3 and 4
1 and 2
3 and 6
7 and 9
3 and 6
The preamble is added by the sending Network Interface Card (NIC)?
True
False
True
Which mechanism will move a port into a root-inconsistent state if BPDUs coming from a certain direction indicate another Switch is trying to become the Root Bridge?
topology change notification (TCN)
root stop
PortFast
root guard
root guard
What was the max distance between a hub and a node on a 10Base-T Network?
500 m
50 m
100 m
5 m
100 m
What is an advantage of Fiber-Optic cabling?
susceptible to electrical interference
signals travel more slowly
easier and cheaper to install than UTP
greater max distance
greater max distance
A Repeater also functions as an amplifier?
True
False
False
When using the newer Rapid Spanning Tree Protocol (RSTP), how long does it take a Network to return to convergence?
6 Seconds
50 Seconds
2 Seconds
25 Seconds
6 Seconds
What was the original max data transfer rate of the first Ethernet developed by Xerox?
16 Mbps
56 Kbps
3 Mbps
10 Mbps
3 Mbps
What’s the meaning of the Term “Carrier Sense” on an Ethernet Network?
Carrier Sense examins the cable before sending a Frame, if another machine is using the Network, the node detecs traffice on the segment and waits a few milliseconds, then rechecks. If it detects no traffic, the node sends out its frame.
Explain Carrier-Sense Multiple Access with Collision Detection (CSMA/CD)?
Determines which computer should use a shared cable at a given moment.
Explain the difference between Half-Duplex and Full-Duplex Modes?
Half-Duplex means communication happens in one direction, either Sending OR Receiving at one time.
Full-Duplex means that the communication happens Both at the same time, Sending AND Receiving.
Explain why 2 nodes connected to a Switch can send data at the same time without the occurence of a collision?
Each Port on a Switch is its own Collision Domain, and Switches can buffer incoming frames.
What happens if 2 machines, both listening to the cable, simultaneously decide that it is free and try to send a frame?
Collision happens and both transmissions are Lost.
Fiber-Optic cabling transmits data packets using pulses of ________?
light.