terms to know 2 Flashcards
load balancing/fail over
(NIC teaming)
aggregate bandwidth. multicast instead of broadcast. nics talk to each other constantly. fails over when a nic doesnt respond.
RTO
Recovery time objective. Get up and running quickly. Get back to a particular service level.
RPO
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.
steganography
part of c in cia triad. conceal info within another piece of info. commonly associated with hiding info in an image.
screened subnet
previously known as a DMZ. additional layer of security. Public access to public resources.
mfa
multi factor authentication
DAI
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.
port isolation
prevents access between devices on the same VLAN. they cant access each other.
full tunnel
all data is sent through vpn concentrator(or just known as VPN)
split tunnel
vpn administrator determines which traffic goes over vpn and which doesn’t.
asset tag
a sticker with a barcode on it that goes on the device.
Netflow
probe and collector, gathers traffic statistics from all trafific flows.
iPerf
performance monitoring and speed testing. need two computers.
rssi
received signal strength for wifi. closer to 0 is better. measured in dBm (decibel milliwatts)
eirp
effective isotropic radiated power. the radiated signal stength. the power delivered to the antenna times the antenna numerical gain
H.323
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
iterative query
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
recursive query
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
ESP
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.
Slaac
stateless address autoconfigureation. Automatifcally configure an IP address without a dhcp server ipv6
