Network Security Essentials Study
Questions with 100% Correct Solutions
Public Cloud
Cloud infrastructure owned by a company but available for general public use.
Private Cloud
Cloud infrastructure operated by an organization and available only to its members.
Community Cloud
Cloud infrastructure offering exclusive access to infrastructure and computing
resources for multiple organizations.
Hybrid Cloud
Cloud infrastructure combining at least one private and one public cloud.
Spoofing
An exploit where attackers falsify data to appear as a trusted source.
ARP Poisoning
An exploit redirecting network traffic by linking attacker's MAC address with IP
address of a legitimate computer.
Denial-of-Service
An attack that disrupts network services, making them unavailable to users.
SQL Injection
, Attackers take control of a database by injecting SQL code into input fields on a website.
Firewall
Use reverse proxy system and scan incoming packets for malicious behavior. Use web-
application firewall with rules to filter dangerous requests. Enable NX-bit (no-execute)
functionality on physical computer.
Buffer Overflow
Similar to SQL Injection but involves entering too much information into a form,
causing the application to crash or other damage.
Man in the Middle (MitM)
Impersonates both sender and receiver to intercept communication. Hacker hijacks
a session between a trusted client and network server.
VLAN Hopping
Method of attacking networked resources on a virtual LAN (VLAN), allowing access
to traffic on other VLANs.
Denial of Service (DoS)
Denying service to a computer, network, or network server by overwhelming it with
large amounts of useless traffic.
Distributed Denial of Service (DDoS)
Multiple systems target a single system with a DoS attack, bombarding the network
with packets from multiple locations.
Ping of Death
Questions with 100% Correct Solutions
Public Cloud
Cloud infrastructure owned by a company but available for general public use.
Private Cloud
Cloud infrastructure operated by an organization and available only to its members.
Community Cloud
Cloud infrastructure offering exclusive access to infrastructure and computing
resources for multiple organizations.
Hybrid Cloud
Cloud infrastructure combining at least one private and one public cloud.
Spoofing
An exploit where attackers falsify data to appear as a trusted source.
ARP Poisoning
An exploit redirecting network traffic by linking attacker's MAC address with IP
address of a legitimate computer.
Denial-of-Service
An attack that disrupts network services, making them unavailable to users.
SQL Injection
, Attackers take control of a database by injecting SQL code into input fields on a website.
Firewall
Use reverse proxy system and scan incoming packets for malicious behavior. Use web-
application firewall with rules to filter dangerous requests. Enable NX-bit (no-execute)
functionality on physical computer.
Buffer Overflow
Similar to SQL Injection but involves entering too much information into a form,
causing the application to crash or other damage.
Man in the Middle (MitM)
Impersonates both sender and receiver to intercept communication. Hacker hijacks
a session between a trusted client and network server.
VLAN Hopping
Method of attacking networked resources on a virtual LAN (VLAN), allowing access
to traffic on other VLANs.
Denial of Service (DoS)
Denying service to a computer, network, or network server by overwhelming it with
large amounts of useless traffic.
Distributed Denial of Service (DDoS)
Multiple systems target a single system with a DoS attack, bombarding the network
with packets from multiple locations.
Ping of Death
