Network Security Essentials Exam Guide2 with
100% Correct Solutions
Firewall - ANSWER Monitors and controls network traffic based on security rules
Demilitarized Zone - ANSWER Subnetwork exposing external-facing services to
untrusted networks
LAN - ANSWER Local network access like home/office WiFi
WLAN - ANSWER Wireless local network access like WiFi
MAN - ANSWER Metropolitan network access like city-wide WiFi
WAN - ANSWER Wide area network access like bank branches
Network Segmentation - ANSWER Dividing network into sections like HR, Finance
IP Address - ANSWER Unique string identifying devices on a network
IPv4 - ANSWER Internet Protocol version with 4 billion addresses
IPv6 - ANSWER Internet Protocol version with 340 undecillion addresses
External IP Address - ANSWER Used to locate devices across the internet
, Internal IP Address - ANSWER Used to locate devices within a private network
Media Access Control (MAC) Address - ANSWER Unique hardware ID for network
devices
Network Address Translation (NAT) - ANSWER Remaps IP addresses in transit across
networks
Protocol - ANSWER Agreed format for data transmission between devices
Port Number - ANSWER Identifies specific processes for network messages
Packet - ANSWER Data unit transmitted over networks
Time to Live - ANSWER Message expiration time in network communication
Transmission Control Protocol (TCP) - ANSWER Ensures data delivery and order between
hosts
User Datagram Protocol (UDP) - ANSWER Establishes low-latency connections between
applications
Data Integrity - ANSWER Ensuring data remains unchanged and secure during transit
Cyber Security Risk - ANSWER Probability of loss from a cyber-attack or breach
Assets - ANSWER Valuable resources to protect in an organization
100% Correct Solutions
Firewall - ANSWER Monitors and controls network traffic based on security rules
Demilitarized Zone - ANSWER Subnetwork exposing external-facing services to
untrusted networks
LAN - ANSWER Local network access like home/office WiFi
WLAN - ANSWER Wireless local network access like WiFi
MAN - ANSWER Metropolitan network access like city-wide WiFi
WAN - ANSWER Wide area network access like bank branches
Network Segmentation - ANSWER Dividing network into sections like HR, Finance
IP Address - ANSWER Unique string identifying devices on a network
IPv4 - ANSWER Internet Protocol version with 4 billion addresses
IPv6 - ANSWER Internet Protocol version with 340 undecillion addresses
External IP Address - ANSWER Used to locate devices across the internet
, Internal IP Address - ANSWER Used to locate devices within a private network
Media Access Control (MAC) Address - ANSWER Unique hardware ID for network
devices
Network Address Translation (NAT) - ANSWER Remaps IP addresses in transit across
networks
Protocol - ANSWER Agreed format for data transmission between devices
Port Number - ANSWER Identifies specific processes for network messages
Packet - ANSWER Data unit transmitted over networks
Time to Live - ANSWER Message expiration time in network communication
Transmission Control Protocol (TCP) - ANSWER Ensures data delivery and order between
hosts
User Datagram Protocol (UDP) - ANSWER Establishes low-latency connections between
applications
Data Integrity - ANSWER Ensuring data remains unchanged and secure during transit
Cyber Security Risk - ANSWER Probability of loss from a cyber-attack or breach
Assets - ANSWER Valuable resources to protect in an organization
