Acronyms

Question 0

DNS

Answer 0

Domain Name System

Question 1

EIGRP

Answer 1

Enhanced Internal Gateway Routing Protocol

Question 2

DHCP

Answer 2

Dynamic Host Configuration Protocol

Question 3

PVST+

Answer 3

Per-VLAN Spanning Tree Plus

Question 4

STA

Answer 4

Spanning Tree Algorithm

Question 5

BPDU

Answer 5

Bridge Protocol Data Units

Question 6

PDU

Answer 6

Protocol Data Unit

Question 7

NIC

Answer 7

Network Interface Card

Question 8

IP

Answer 8

Internet Protocol

Question 9

OSPF

Answer 9

Open Shortest Path First

Question 10

AS

Answer 10

Autonomous System

A collection of networks within a common administrative domain

Question 11

IGP

Answer 11

Internal Gateway Protocol

A dynamic routing protocol that operates within an autonomous system (eg: RIPv2, EIGRP, OSPF)

Question 12

EGP

Answer 12

External Gateway Protocol

A dynamic routing protocol that serves to connect various autonomous systems (eg: BGP)

Question 13

FHRP

Answer 13

First hop redundancy protocol

Provides default gateway redundancy

Question 14

HSRP

Answer 14

Hot standby router protocol

Question 15

VRRP

Answer 15

Virtual router redundancy protocol

Question 16

GLBP

Answer 16

Gateway load balancing protocol

The Gateway Load Balancing Protocol feature provides automatic router backup for IP hosts configured with a single default gateway on an IEEE 802.3 LAN. Multiple first hop routers on the LAN combine to offer a single virtual first hop IP router while sharing the IP packet forwarding load. Other routers on the LAN may act as redundant GLBP routers that will become active if any of the existing forwarding routers fail.

Question 17

PAgP

Answer 17

Port aggregation protocol

Port Aggregation Protocol (PAgP) is a Cisco Systems proprietary networking protocol, which is used for the automated, logical aggregation of Ethernet switch ports, known as an etherchannel.

Question 18

LACP

Answer 18

Link aggregation control protocol

Link aggregation is a computer networking term to describe various methods of combining (aggregating) multiple network connections in parallel to increase throughput beyond what a single connection could sustain, and to provide redundancy in case one of the links fail.

Question 19

ARP

Answer 19

Address Resolution Protocol

 ARP is used to convert an IP address to a physical address such as an Ethernet address (also known as a MAC address). 

  If a destination device's hardware address isn't present within the sender's ARP cache, the sender will broadcast an ARP request that includes the destination IP address and a broadcast MAC address (FF:FF:FF:FF:FF:FF). The destination device responds with its MAC address.

Question 20

ISL

Answer 20

Inter-Switch Link

Cisco Inter-Switch Link (ISL) is a Cisco Systems proprietary protocol that maintains VLAN information in Ethernet frames as traffic flows between switches and routers, or switches and switches.

The term can also be used simply as another term for a trunk.

Question 21

ICMP

Answer 21

Internet Control Message Protocol

The Internet Control Message Protocol (ICMP) is one of the main protocols of the Internet Protocol Suite. It is used by network devices, like routers, to send error messages indicating, for example, that a requested service is not available or that a host or router could not be reached. ICMP can also be used to relay query messages.[1] It is assigned protocol number 1.[2] ICMP[3] differs from transport protocols such as TCP and UDP in that it is not typically used to exchange data between systems, nor is it regularly employed by end-user network applications (with the exception of some diagnostic tools like ping and traceroute).

Question 22

ABR

Answer 22

Area border router

In the OSPF dynamic routing protocol, an ABR is a router that sits between two areas that are in the same autonomous system.

Question 23

ASBR

Answer 23

Autonomous system boundary router

In OSPF, an ASBR is a router that sits between the backbone area and another autonomous system (if that AS uses a different dynamic routing protocol).

Question 24

LSA

Answer 24

Link-State Advertisement Basic means of communication for routers using the OSPF DRP. Allows them to exchange network topology information.

Question 25

MAC address

Answer 25

media access control

Question 26

PPP

Answer 26

Point-to-Point Protocol

Question 27

PPPoE

Answer 27

Point-to-Point Over Ethernet

Question 28

DSL

Answer 28

Digital Subscriber Line Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that provide internet access by transmitting digital data using a local telephone network which uses the Public switched telephone network. DSL service is delivered simultaneously with wired telephone service on the same telephone line. This is possible because DSL uses higher frequency bands for data.

Question 29

ISDN

Answer 29

Integrated Services Detail Network Integrated Services for Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. Prior to ISDN, the telephone system was viewed as a way to transport voice, with some special services available for data. The key feature of ISDN is that it integrates speech and data on the same lines, adding features that were not available in the classic telephone system.

Question 30

HDLC

Answer 30

High-Level Data Link Control

Question 31

NCP

Answer 31

Network Control Protocol A Network Control Protocol is a protocol that runs atop the Point-to-Point Protocol (PPP) and that is used to negotiate options for a network layer protocol running atop PPP.

Question 32

LCP

Answer 32

Link Control Protocol The Link Control Protocol (LCP) forms part of the Point-to-Point Protocol (PPP), within the family of Internet protocols. In setting up PPP communications, both the sending and receiving devices send out LCP packets to determine the standards of the ensuing data transmission. The LCP protocol: checks the identity of the linked device and either accepts or rejects the device determines the acceptable packet size for transmission searches for errors in configuration can terminate the link if requirements exceed the parameters

Question 33

DCE

Answer 33

Data Communications Equipment

Question 34

DTE

Answer 34

Date Terminal Equipment

Question 35

MIB

Answer 35

Management Information Base

Question 36

NMS

Answer 36

Network Management Server

Question 37

IDS

Answer 37

Intrusion Detection System

Question 38

DTP

Answer 38

Dynamic Trunking Protocol

Question 39

CST

Answer 39

Common Spanning Tree (regular ST, as opposed to PVST+ or rapid PVST)

Question 40

VLSM

Answer 40

Variable length subnet mask

Question 41

DES

Answer 41

Data encryption standard