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OSI Model
Backbones
Routing Protocols
Devices
D2B
100
This layer's primary function is to handle the routing of packets.
What is the Network Layer?
100
This type of backbone is the simplest: a single daisy-chain of network devices.
What is a serial backbone?
100
RIPv2 is an example of this type of routing protocol.
What is Distance Vector (DV)?
100
This/these are the OSI layer(s) that a NIC operate(s) at.
What are OSI Layers 1 & 2?
100
10.10.1.15 in binary.
What is 00002020.00002020.00000001.00001111?
200
This layer handles the nitty-gritty details of establishing a connection between two network peers.
What is the Transport layer (layer 4)?
200
This type of backbone uses redundant, cross-connected pairs of cables to connect all of the backbone network devices.
What is a parallel backbone?
200
Open Shortest Path First is an example of this type of routing protocol.
What is Shortest Path First (SPF), aka Link-State?
200
If you want to break up a broadcast domain, you need one of these.
What is a Router?
200
11000000.10101000.00010100.00011111 in decimal.
What is 192.168.20.31?
300
This layer just shuffles bits.
What is the Physical Layer (layer 1)?
300
This type of backbone uses multiple routers, but each router serves only a single segment of the network.
What is a distributed backbone?
300
IS-IS is is an example of this type of routing protocol.
What is Shortest Path First (SPF), aka Link-State?
300
These two network devices only operate at layer 1.
What is a repeater and a hub?
300
224.155.67.20 in decimal.
What is 11100000.10011011.01000011.00010100?
400
This layer takes requests from the OS and makes the first decisions about which protocols to use.
What is the Application Layer (layer 7).
400
This type of backbone has one core router that connects to all of the core network switches.
What is a collapsed backbone?
400
BGP is an example of this type of routing protocol.
What is Distance Vector (DV)?
400
These two devices operate at layers 1 and 2. They can read and process frames.
What are bridges and switches?
400
11001100.00110011.00001111.11110000 in decimal.
What is 204.51.240.15?
500
This layer is the only layer to be broken into two sublayers: the Logical Link and Media Access sublayers.
What is the Data Link layer (Layer 2)?
500
This is the "best" type of backbone, assuming you can afford it.
What is a parallel backbone?
500
EIGRP is an example of this type of routing protocol.
What is a Hybrid Protocol?
500
This type of network device can operate at layers 2, 3, 4, or even all the way up to layer 7.
What is a multilayer switch?
500
204.51.240.15 is this class of address.
What is a class C address?