terms to know 2

Question 1

load balancing/fail over
(NIC teaming)

Answer 1

aggregate bandwidth. multicast instead of broadcast. nics talk to each other constantly. fails over when a nic doesnt respond.

Question 2

RTO

Answer 2

Recovery time objective. Get up and running quickly. Get back to a particular service level.

Question 3

RPO

Answer 3

Recovery Point Objective
How much data loss is acceptable?
Bring the system back online; how far back does data go? maximum amount of data the organization can tolerate losing.

Question 4

steganography

Answer 4

part of c in cia triad. conceal info within another piece of info. commonly associated with hiding info in an image.

Question 5

screened subnet

Answer 5

previously known as a DMZ. additional layer of security. Public access to public resources.

Question 6

mfa

Answer 6

multi factor authentication

Question 7

DAI

Answer 7

Dynamic arp inspection. stops arp poisoning at switch level by using dhcp snooping to protect against DHCP server spoofing, client spoofing, and denial-of-service attacks which intercepts all arp requests and responses.

Question 8

port isolation

Answer 8

prevents access between devices on the same VLAN. they cant access each other.

Question 9

full tunnel

Answer 9

all data is sent through vpn concentrator(or just known as VPN)

Question 10

split tunnel

Answer 10

vpn administrator determines which traffic goes over vpn and which doesn’t.

Question 11

asset tag

Answer 11

a sticker with a barcode on it that goes on the device.

Question 12

Netflow

Answer 12

probe and collector, gathers traffic statistics from all trafific flows.

Question 12

iPerf

Answer 12

performance monitoring and speed testing. need two computers.

Question 13

rssi

Answer 13

received signal strength for wifi. closer to 0 is better. measured in dBm (decibel milliwatts)

Question 14

eirp

Answer 14

effective isotropic radiated power. the radiated signal stength. the power delivered to the antenna times the antenna numerical gain

Question 15

H.323

Answer 15

H. 323 is one of the oldest standards which are generally used for VoIP telephony and video conferencing
provide audio and visual communication over a computer network.
SIMILAR TO SIP BUT FOR MEDIA

Question 16

iterative query

Answer 16

REFERRAL
either a valid address or a REFERAL to another DNS server that may hold relevant information to the name resolution process
iterative client is responsible for sending query to different servers until query is resolved

Question 17

recursive query

Answer 17

type of query that returns either a valid address or a message indicating that the address cannot be found

only send query to 1st server then server will send request to next server until query is resolved

Question 18

ESP

Answer 18

Encapsulating Security Payload is a member of the IPsec set of protocols that encrypt and authenticate the packets of data between computers using a VPN.

provides all parts of CIA triad.

Question 19

Slaac

Answer 19

stateless address autoconfigureation. Automatifcally configure an IP address without a dhcp server ipv6