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Details

Local Area Network Hardware
3C251 - Volume 3 - Section 1
21
Computer Networking
Professional
10/01/2010

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Cards

Term
What device is a combination transmitter/receiver in a single package?
Definition
A transceiver
Term
What device operates at the Physical layer of the OSI modes and is used in Ethernet networks to connect which device to a fiber or copper cable?
Definition
Switch
Term
What device provides the physical, electrical, and electronic connections to the network media?
Definition
Network Interface Card
Term
What layers of the OSI model do network interface cards belong?
Definition
Physical layer and Data Link layer
Term
The device that receives a digital signal and regenerates the signal along the next leg of the medium is a
Definition
repeater
Term
A repeater with more than one output port is a
Definition
hub
Term
What can be used to extend the size of a network
Definition
Gateway
Term
What is a device that subdivides a network into smaller logical pieces, or segments?
Definition
Switch
Term
What is the time a switch takes to figure out where to forward a data unit is called?
Definition
Latency
Term
What network device is a combination of networking hardware and software that connect two dissimilar kinds of networks?
Definition
Gateway
Term
What type of gateway can restrict the kind of access LAN users have to the internet, and vice versa?
Definition
An internet gateway
Term
What type of gateway might include remote access servers that allow dial-up connectivity to a LAN?
Definition
A LAN gateway
Term
What is a router's strength?
Definition
Its intelligence
Term
What is the oldest routing protocol?
Definition
RIP
Term
What is the routing protocol of internet backbones?
Definition
Border Gateway Protocol (BGP)
Term
Based on a specific input address, which LAN switch has the lowest delay and should be considered for supporting real-time applications?
Definition
Cut-through switch
Term
What SONET device aggregates or splits SONET traffic at various speeds so as to provide access to SONET without demultiplexing the SONET signal stream?
Definition
Add/drop multiplexer (ADM)
Term
What SONET devices configured to split SONET traffic and copy individual channels on two or more output links?
Definition
Drop-and-repeat node (D+R)
Term
When tributary units are grouped together they form
Definition
a tributary unit group (TUG)
Term
An OC-12's electrical signal is the same as a synchronous transport signal level-12 (STS-12)frame and equal to what STM frame?
Definition
STM-4
Term
Because of its cost, ATM is rarely used on small LANs. What technology is better suited for LANs?
Definition
Gigabit Ethernet
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