Welcome to a helpful quiz on the opening chapter of your studies regarding network security, as part of your work towards the Cisco Certified Network Associate. Do you think you have all of the information memorised from the first chapter? Answer the questions and we’ll see for sure!
A hacker uses password-cracking programs to gain access to a computer via a dialup account.
A hacker gains unauthorized access to networks via wireless access points.
A hacker mimics a tone using a whistle to make free long-distance calls on an analog telephone network.
A hacker uses a program that automatically scans telephone numbers within a local area, dialing each one in search of computers, bulletin board systems, and fax machines.
Port redirection attacks use a network adapter card in promiscuous mode to capture all network packets that are sent across a LAN.
Password attacks can be implemented using brute-force attack methods, Trojan Horses, or packet sniffers.
Buffer overflow attacks write data beyond the allocated buffer memory to overwrite valid data or exploit systems to execute malicious code. .
Port scanning attacks scan a range of TCP or UDP port numbers on a host to detect listening services.
Trust exploitation attacks can use a laptop acting as a rogue access point to capture and copy all network traffic in a public location on a wireless hotspot.
Internet information query
Disable used ports and services
Determine potential vulnerabilities
Identify active services
Identify peripheral configurations
Identify operating systems
A ping sweep is a network scanning technique that indicates the live hosts in a range of IP addresses.
A ping sweep is a software application that enables the capture of all network packets sent across a LAN.
A ping sweep is a scanning technique that examines a range of TCP or UDP port numbers on a host to detect listening services.
A ping sweep is a query and response protocol that identifies information about a domain, including the addresses assigned to that domain.
They always precede access attacks.
They attempt to compromise the availability of a network, host, or application.
They are difficult to conduct and are initiated only by very skilled attackers.
They are commonly launched with a tool called L0phtCrack.
Examples include smurf attacks and ping of death attacks.
One device falsifies data to gain access to privileged information.
Large amounts of network traffic are sent to a target device to make resources unavailable to intended users.
Improperly formatted packets are forwarded to a target device to cause the target system to crash.
A program writes data beyond the allocated memory to enable the execution of malicious code.
A virus typically requires end-user activation.
A virus has an enabling vulnerability, a propagation mechanism, and a payload.
A virus replicates itself by independently exploiting vulnerabilities in networks.
A virus provides the attacker with sensitive data, such as passwords.
A virus can be dormant and then activate at a specific time or date.
Identification of vulnerable targets
Modification of system files and registry settings to ensure that the attack code is running
Transfer of exploit code through an attack vector
Extension of the attack to vulnerable neighboring targets
Man in the middle
Denial of Service
Proxy Trojan horse
Denial of Service Trojan horse
A Trojan Horse can be carried in a virus or worm
A proxy Trohan Horse opens port 21 on the target system.
A FTP Trojan Horse stops anti-virus programs or firewalls from functioning.
A Trojan Horse can be hard to detect because it closes when the application that launches it closes
Here's an interesting quiz for you.