Enter Title

Router Hardware

100

For values of destination subnet addresses, I store the associated forwarding port number.

What is a forwarding table?

200

I am a  high speed switching fabric that allows multiple input-port to output-port transfers of datagrams.

What is a CrossBar switch?

300

If datagrams arrive from the switching fabric faster than the output port can transmit them, I do this.

What is queuing?

400

I am the three stages of an input port or output port.

What are line termination, link layer protocol, and lookup/forwarding/queueing?

500

I am impacted by net neutrality and impact what happens when a datagram arrives to an output port whose queue is full.

What is a discard policy?

Network Layer Services

100

I uniquely identify a network interface anywhere on the internet.

What is an IP address?

200

I solve the problem of different Media Transfer Unit (MTU) sizes for different links along a route from source to destination hosts.

What is fragmentation?

300

I am a common prefix shared by host interfaces able to reach each other without a router.

What is a subnet?

400

I am a broadcast based protocol that allows new hosts to acquire necessary pieces of information needed to communicate on a network.

What is Dynamic Host Configuration Protocol (DHCP)?

500

I use port numbers and re-writing datagrams as the mechanism for sharing a single public address among host at multiple private addresses.

What is Network Address Translation (NAT)?

Control Plane

100

As a routing algorithm, nodes broadcast network topology information to all other nodes in order to determine least cost paths.

What is Link State Routing?

200

As a routing algorithm, network topology information is exchanged only by adjacent nodes and eventually topology information washes across the entire network.

What is Distance Vector Routing?

300

I make network flows programmable through a series of match/action rules.

What is a flow table (Software Defined Networking)?

400

I am an aspect of traffic engineering that is only possible with Software Defined Networking.

What is load balancing?

500

We are the protocol messages that allow routers in different Autonomous Systems to learn reachability information regardless of a subnet's location.

What are eBGP and iBGP messages?

Data Plane

100

Because of me, you can move a subnet from one ISP to another.

What is longest prefix matching?

200

I am the key difference between an IP address and a MAC address.

What is a globally unique interface address versus locally unique on the same network?

300

I am the purpose for the Time To Live (TTL) field.

What is a packet that is forwarded forever?

400

I am the first hop router needed to get your datagrams off the network.  I can be assigned by DHCP.

What is the default gateway?

500

I am how you would implement a server on a private network using a NAT box.

What is writing a NAT entry?
What is port forwarding?

Link Layer

100

I am the purpose of the link layer

What is framing?
What is getting datagrams to hosts on same network or shared medium?

200

I am what happens when two hosts on the same network try to communicate at the same time.

What is a collision?

300

I am where you find the implementation of the link layer.

What are hardware, software, and firmware?

400

I am the reason why WiFi does not scale to 1000's of hosts.

What are collisions?
What is backoff?

500

I can be used to both detect errors and correct errors?

What are row parity and column parity?