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Memory Tables
Chapter 2, 3
36
Computer Networking
Undergraduate 1
05/06/2015

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Term
Informal IEEE Standard Name for Ethernet
Definition
10BASE-T
Term
Informal IEEE Standard Name for Fast Ethernet
Definition
100BASE-T
Term
Informal IEEE Standard Name for Gigabit Ethernet
Definition
1000BASE-LX
Term
Informal IEEE Standard Name for Gigabit Ethernet
Definition
1000BASE-T
Term
Informal IEEE Standard Name for 10 Gigabit Ethernet
Definition
10GBASE-T
Term
Which one is 5.000 m fiber?
Definition
1000BASE-LX
Term
Which pins transmit on pins 1, 2 for 10BASE-T and 100BASE-TX?
Definition
PC NIC'c, routers, wireless accespoints (ethernet interface)
Term
Which pins transmit on pins 3, 6 for 10BASE-T and 100BASE-TX?
Definition
hub, switch
Term
What's the Ethernet equivalent of the HDLC Header for Flag? What is it for?
Definition
Preamble. For listing a recognizable bit pattern so that the receiving nodes realize a new frame is arriving?
Term
What's the Ethernet equivalent of the HDLC Header for Address? What is it for?
Definition
Destination Address. Identifies the destination device.
Term
What's the Ethernet equivalent of the HDLC Header for Type? What is it for?
Definition
Type. Identifies the type of Layer 3 packet encapsulated in frame.
Term
What's the Ethernet equivalent of the HDLC Header for FCS? What is it for?
Definition
A field used by the error description process, it is the only trailer field in this table.
Term
Leased Line
Definition
A serial communications circuit between two points, provided by some service provider. Often a telco. B/c the telco doesn't sell a physical cable between the two endpoints, it charges a monthly fee for the ability to send bits between the two sites, therefor it's considered a leased service.
Term
WAN
Definition
Part of a larger network that implements mostly OSI Layer 1 and 2 technology, connects sites that typically sit far apart, and ses a business model in which a consumer (individual or business) must lease the WAN from a service provider. Often a telco.
Term
Serial interface
Definition
A type of interface on a router, used to connect to some types of WAN lnks, particularly leased lines and Frame Relay acces links.
Term
HDLC
Definition
High Level Data Link Control. A bit orientated synchronous data link layers protocol, developed by the ISO.
Term
DSL
Definition
Digital Subcriber Line. Public network technology that delivers high bandwith over conventional telco local-loop copper wiring at limited distances. Typically ised as an Internet acces technology, connecting a user to an ISP.
Term
Ethernet
Definition
A series of LAN standars defined by the IEEE, origanlly invented by Xerox Corporation, and developed jointly by Xerox, Intel, and Digital Equipment Corporation.
Term
MPLS
Definition
Multiprotocol Label Switching, a general term meaning that the service acts like one Ethernet link.
Term
What's the first Octet Range class A?
Definition
1 to 126
Term
What's the first Octet Range class B?
Definition
128 to 191
Term
What's the first Octet Range class C?
Definition
192 to 223
Term
What are all possible valid Network Numbers for class A?
Definition
1.0.0.0 tot 126.0.0.0
Term
What are all possible valid Network Numbers for class B?
Definition
128.0.0.0. to 191.255.0.0
Term
What are all possible valid Network Numbers for class C?
Definition
192.0.0.0 to 223.255.255.0
Term
default router
Definition
Nearest router on the LAN for a pc
Term
routing table
Definition
A list, kept by each router. The table lists IP adress groupings, called IP networks and IP subnets.
Term
IP Network
Definition
Classfull IP Network. An IPv4-Class A, B, or C-network; called a classfull network b/c these networks are defined by the class rules for IPv4 adressing.
Term
IP subnet
Definition
Subdivision of a Class A, B, or C network, as configered by a network administrator. Subnets allow a single Class A, B, or C network to be used instead of multiple networks, and still allow for a large number of groups of IP adresses, as is required for efficient IP routing.
Term
Network ID
Definition
network number, network address. E.g. 8.0.0.0.
Term
What's the number of networks in class A?
Definition
126
Term
What's the number of hosts per network in a class A?
Definition
16, 777, 214
Term
What's the number of networks in class B?
Definition
16, 384
Term
What's the number of hosts per network in a class B?
Definition
65, 534
Term
What's the number of networks in class C?
Definition
2, 097, 152
Term
What's the number of hosts per network in class C?
Definition
254
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