OSI model & protocols
this layer is responsible for routing packets across different networks using logical addressing like IP
what is the network layer?
the standard 8-pin connector used for most twisted-pair ethernet cables
what is Rj-45
the IP address, 127.0.0.1, is used by a host to test its own network stack.
what is the loopback address?
this 802.11 standard operates in both the 2.4 Ghz and 5 GHz bands and introduced MIMO
what is 802.11n (wi-fi 4)?
this security device inspects incoming and outgoing traffic to block unauthorized access based on a set of rules
what is a firewall?
this protocol operates on port 443 and provides encrypted communication for web traffic
what is HTTPS?
this cable type is required in air-handling spaces because it does not give off toxic fumes when burned
what is Plenum-rated cable?
if a device cannot reach a DHCP server, it may self-assign an address in the 169.254.0.0/16 range, known as this.
what is APIPA?
this latest WPA standard introduced individualized data encryption and the dragonfly key excahnge
what is WPA3?
this type of attack floods a network with traffic from multiple sources to make a service unavailable
what is DDoS?
Unlike TCP, this transport layer protocol is connectionless and does not guarantee delivery
what is UDP?
this fiber optic connector features a bayonet-style twist-on mechanism
what is an ST?
this is the decimal value of an 8-bit octet where all bits are set to 1.
what is 255?
this is a wireless site survey performed without visiting the physical site, using blueprints and software instead
what is a predictive analysis?
this type of malware encrypts a user's data and demands payment for the decryption key
what is ransomware?
what is SSH?
this small, square fiber connector is commonly referred to as the little connector
what is an LC connector?
this type of transmission sends a packet from one host tro a specific group of interested hosts.
what is Multicast?
this 802.11 standard was the first to operate exclusively in the 5 GHz range and supported speeds up to 54 Mbps
what is 802.11a?
this VPN protocol uses a combination of AH and ESP to provide data integrity and confidentiality
what is IPsec?
this PDU is associated with layer 4 (transport) when using the TCP protocol
what is a segment?
this specific phenomenon occurs when a signal loses strength as it travels over a long distance
what is Attenuation?
this is the private IP address range for Class B networks according to RFC 1918
what is 172.16.0.0 to 172.31.255.255?
this feature allows a wireless client to stay connected while moving from one access point to another
what is roaming?
this is the practice of limiting an interfaces access to only specific, authorized MAC addresses
what is port security?