NETWORK+ Terms E's

Question 1

An E1 link
that operates over two separate sets
of wires, typically twisted-pair cable

Answer 1

E1 (E-Carrier Level 1)

Question 2

An extension of PPP
that supports authentication methods
more secure than a standard
username and password combination.
EAP is commonly used as an
authentication protocol for token
cards, smart cards, and digital certificates.

Answer 2

EAP (Extensible Authentication

Protocol)

Question 3

As specified by the Internet
Engineering Task Force as RFC
2671, EDNS increases the size of
the flags fields, return codes and
label types available in basic DNS.

Answer 3

EDNS (Extension Mechanisms for

DNS)

Question 4

The exterior gateway protocol
defines distance vector protocols
commonly used between hosts on
the Internet to exchange routing
table information. BGP is an example
of an EGP. See BGP

Answer 4

EGP (Exterior Gateway Protocol)

Question 5

A protocol that
enables routers to exchange information
more efficiently than earlier
network protocols. Routers configured
to use EIGRP keep copies of
their neighbors’ routing information
and query these tables to help find
the best possible route for transmissions
to follow.

Answer 5

EIGRP (Enhanced Interior Gateway

Routing Protocol)

Question 6

External interference of electromagnetic
signals that causes a reduction
in data integrity and increased error
rates in a transmission medium.

Answer 6

EMI (electromagnetic interference)

Question 7

A technique used
by protocols in which header and
trailer information is added to the
protocol data unit as it is passed
down through the protocol stack on
a sending system. The reverse
process, decapsulation, is performed
at the receiving system as the packet
travels up through the protocol
suite.

Answer 7

encapsulation

Question 8

Modifying data for
security purposes prior to transmission
so that the data cannot be read
without the decryption method.

Answer 8

encryption

Question 9

A
condition created when two objects
of dissimilar electrical charge come
into contact with each other. The
result is that a charge from the
object with the higher electrical
charge discharges itself into the
object with the lower-level charge.
This discharge can be harmful to
computer components and circuit
boards.

Answer 9

ESD (electrostatic discharge)

Question 10

One of the two separate
protocols IPSec consist of (the other
being AH). ESP provides encryption
services.

Answer 10

ESP (Encapsulated Security

Packets)

Question 11

The
extended service set (ESS) refers to
two or more BSS sets connected,
therefore using multiple APs. The
ESS would be used to create
WLANs or larger wireless networks
and is a collection of APs and
clients. See BSS.

Answer 11

ESS (Extended Service Set)

Question 12

The terms ESSID and
SSID are used interchangeably, but
they are different. The SSID is the
name used with BSS networks, and
the ESSID is the network name
used with an ESS wireless network
design. With an ESS, not all APs
necessarily use the same name.

Answer 12

ESSID (Extended Service Set

Identifier)

Question 13

The most common LAN
technology. Ethernet can be implemented
using coaxial, twisted-pair,
or fiber-optic cable. Ethernet typically
uses the CSMA/CD media
access method and has various
implementation standards.

Answer 13

Ethernet

Question 14

A utility available on
Windows Server systems and client
systems including Windows
7/Vista/XP. It is commonly used to
gather systems information and also
is used in the troubleshooting
process.

Answer 14

Event Viewer