Deploy Networking Devices Flashcards
1
Q
Repeater
A
- Boosts signal along cable run to overcome attenuation
- Works at OSI layer 1
- Available in both copper and fiber (OEO) Optical-electrical-optical repeater
2
Q
Media Converter
A
- Converts two cable segments of different Media
- Physical layer of OSI model
3
Q
SMF to TP
A
- Powered converters that change light from SMF cabling to electrical signals and vice versa
4
Q
MMF to TP
A
- Converts different signals from MMF to TP
5
Q
SMF to MMF
A
- Passive (unpowered) devices that convert between fiber cabling types
6
Q
Hub
A
- Effectively a multiport repeater
- All ports are on same CD and shared media access area
- All node interfaces are half duplex and use same media bandwidth
- No configuration options
7
Q
MDI vs MDI-X
A
- Medium Dependent Interface refers to interface on end system
- interface on Hub is MDI crossover(X)
- Tx wires on host must connect to Rx wires on hub
8
Q
Bridge
A
- Works at datalink layer
- Establishes separate physical networking segments while keeping all nodes on logical network
- Reduces CDs
- Each segment can have separate media bandwidth
- Forwards only appropriate traffic
- Builds MAC table to know which addresses are on which ports
- If no record exists (of if frame is multi or broadcast) bridge flooded frame to all segments to find it.
9
Q
Switch
A
- Performs same function as bridge, but with each port being a separate CD
- Effectively establishes separate P-P connections between nodes
- Collisions only effect network sement
- All connected to same BD, except if there are VLANs
10
Q
Microsegmentation
A
- The creation of point-point links between network nodes using a switch
11
Q
NIC
A
Network Interface Card
- Transceiver component used to physically connect node to network transmission medium
- Most designed for copper and read for 10/100/1000 operation, and support Gigabit ethernet
- Can also have multiple ports on same card for connection to different networks or link aggregation
12
Q
MAC Address
A
Media Access Control address
- Unique hardware address on NIC
- Can also be called EA(Ethernet Address) or EUI (Extended unique identifier)
- Also referred to as local or physical address
13
Q
PDU
A
Protocol Data Unit
14
Q
Frame
A
- PDU used by ethernet
- Encapsulates higher level payloads
- Contains: Preamble - SFD- Destination MAC - Source MAC - Ether type - Payload - FCS
- Preamble and SFD are used for clock synchronization as part of CSMA/CD protocol
- FCS is error checking 32-bit field, also called CRC (Cyclic redundancy check)
- Sending and receiving devices run same check to determine damage on frame
- No built-in method to retransmit if there is damage
15
Q
Broadcast Address
A
- The I/G bit of a MAC address determines whether frame is address to single node or group.
- A MAC consisting of all 1s is a broadcast address and should be processed by all nodes on BD
