OSI model and protocols
This layer is responsible for routing packets across different networks using logical addressing like IP
what is the network layer (layer 3)?
this cable type is required in air handling spaces because it doesn not give off toxic fumes whenm burned.
What is Plenum-rated cable?
this 802.11 standard operates in both the 2.4 GHz and 5 GHz bands and introduced MIMO
what is 902.11n (Wi-Fi 4)?
this hardware tool is used to "trace" a cable from a wall jack back to a messy patch channel by using a tone generator
what is a tone generator and probe?
this cocument describes the "standard operating procedures" and expected uptime of a service between a provider and a costumer
what is an SLA (Service level agreemnet)?
this is the protocol data unit found at layer 2 of the OSI model
what is a frame?
this specific copper cable categorty can support 10 gbps speeds up to 100 meters
what is cat 6a?
this feature allows a wireless client to stay connected while moving from on eaccess point to another
what is roaming?
this tool is used to find the distance to a break in a fiber optic cable.
what is an OTDR?
this port mirroring feature on a switch allows you to copy all traffic from one port to another for analysis
what is SPAN
unlike TCP, this transport layer protocol is connectonless and does not gaurante delivery
what is UDP?
the standard 8-pin connector used for most twisted pair ethernet cables
what is RJ-45?
this wireless frequency band offers 11 channels in the US (3 non-over-lapping) but suffers from high interference
what is 2.4 GHz band?
This Windows command shows the path a packet takes to reach its destination, listing every router along the way.
What is tracert?
this protocol is used by network devices to send error messages and operatinal information, such as "Destination unreachable"
What is ICMP?
this OSI layer is responsible for electrical signals, cabling, encrypted terminal connection to a remote device
what is SSH
this small, sqaure fiber connector is commonly refered to as the "Little connector"
what is an LC connector
this is the name given to unique ID or "name" of a wireless network
what is the SSID?
this command-line tool is used on Linux/macOS to query DNS records, replacing the older nslookup
what is dig?
this value, usually 1500 bytes, defines the largest packet or frame size that can be sent over a network
what is the MTU (Max transmission unit)?
this protocol uses port 143 to allow users to view and manipluate messages on a mail server without downloading them
what is an IMAP
This specfic phenomenon occurs wjem a signal loses strenght as it travels over a long distance
what is attenuation
this latest WPA standard introducedindividualized data encryption and the dragonFly key exchange
what is WPA3?
this command line tool displays active TCP connections and listening ports on a local machine
what is netstat?
This device allows multiple VLANS to be managed and routed on a signle switch without an external router
what is a layer 3 switch?