Memorize - Other Flashcards
TCP Transmission Control Protocol
Reliable
CONNECTION oriented
Segment retransmission & flow control (windowing)
With segmentation sequencing
UDP User Datagram Protocol
NOT reliable
CONNECTIONLESS
NO transmission and NO windowing
WITHOUT sequencing
Identify the problem
1
Establish a theory of probable cause
2
Test the theory to determine the cause
3
Establish a plan of action to resolve the problems and implement the solution
4
Verify full system functionality
5
Document findings, actions, and outcome
6
802.11a
Band: 5GHz
Bandwidth: 54Mbps
802.11b
Band: 2.4 GHz
Bandwidth: 11Mbps
802.11g
Band: 2.4 GHz
Bandwidth: 54 Mbps
802.11n (Wi-Fi 4)
Band: 2.4 GHz AND 5Ghz
Bandwidth: 150 Mbps/600 Mbps MIMO
802.11ac (Wi-Fi 5)
Band: 5GHz
Bandwidth: 3 Gbps MU-MIMO
802.11ax (Wi-Fi 6)
Band: 2.4GHz, 5GHz, and 6GHz
Bandwidth: 9.6 Gbps MU-MIMO
Public Cloud
Systems and users interact with devices on public networks, such as the
Internet and other clouds
Private Cloud
Systems and users that only have access with other devices inside the
same private cloud or system
Hybrid Cloud
Combination of private and public clouds
Community Cloud
Collaborative effort where infrastructure is shared between several
organizations from a specific community with common concerns
NAT Network Address Translation
allows for routing of private IPs through a public IP
APIPA Automatic Private IP Address
Used when a device does not have a static IP address or cannot reach a DHCP server
PoE Power over Ethernet
Supplies electrical power from a switch port over an ordinary data cable to a power device
Cable Moden
Device that translates coaxial cable signals into phone lines
ONT Optical Network Terminal
Terminates fiber connection
SDN Software Defined Netowrking
Way of virtualizing network hardware
Fiber Optic Cable
Uses light from an LED or laser to transmit information through a thin glass fiber
Single Mode Fiber
used for longer distances and has a smaller core size
multimode fiber
used for shorter distances and has a larger
10 range
Class A
172.16-172.31
Class B
192.168
Class C
DNS Record - A
Address, links a hostname to an IPv4 address
DNS Record - AAAA
Address, Links a hostname to an IPv6 address
DNS Record - CNAME
Canonical Name, points a domain to another domain or subdomain
DNS REcord - MX
Mail Exchange, Directs emails to a mail server
DNS REcord - TXT
Text, adds text into the DNS
DNS Record - NS
Nameserver, indicates which DNS nameserver has the authority
DKIM, DomainKeys Identified Mail
provides cryptographic authentication mechanism for mail using a public key published as a DNS record
DMARC, Domain-based Message Authentication, Reporting & Conformance
Framework that is used for proper application of SPF and DKIM, utilizing a policy that’s published as a DNS record.
Cable stripper
used to cut a piece of cable off a larger spool or run of cable
Cable crimper
Used to attach the connector to the end of the cable
Wire mapping tool
works like a cable tester, but specifically for twisted pair ethernet cables
Punchdown block
terminates the wires and strips off excess installation of extra wires that are no longer needed
