Test your basic knowledge |

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Isolates systems when they initially connect to the network - allows systems to be scanned and checked prior to being put on a trusted segment






2. A spoofed IP is used to send a SYN to the target. It then responds with a SYN/ACK that never receives the final ACK to complete the handshake. This occupies a portion of the target's pre-established buffer for TCP and can prevent the target from acce






3. Confidentiality - integrity - availability






4. Connects many WANs - MANs - and LANs - provided via ISP






5. One is for talking - one is for implementing






6. Attaches itself to existing program files and activated when the exe is launched






7. Bits of code embedded in programs to quickly gain access at a later time






8. Common backdoor to open a port - port scan scans for open ports on remote host - scans 0 - 65 -535 twice. TCP and UDP






9. A system resource that has no legitimate purpose or reason for someone to connect to it - its purpose is to draw in attackers to understand how they break into a system






10. Maintains complete TCP connection state and sequencing through 2 connections - address translation built-in by virtue of second connection above






11. Protocol for mapping an IP address to a physical machine address that is recognized on the local network - A table - usually called the ARP cache - is used to maintain a correlation between each MAC and it's corresponding IP address






12. Metropolitan area network - spans across city or town - larger than a LAN - uses fiber for backbone






13. Protocol for mapping an IP address to a physical machine address that is recognized on the local network. A table - usually called the ARP cache - is used to maintain a correlation between each MAC and its corresponding IP address






14. A time of check/time of use attack that exploits the difference in between when a security control was applied and the time the service was used.






15. TCP/IP - the IP protoco - The core routing protocol of the internet - - deals with transmission of packets between end points - defines the addressing scheme for the internet






16. 53 bytes - 48 bytes for data - 5 bytes for the header






17. Infects MBR - no network spreading potential






18. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






19. 1. physical 2. data 3. network 4. transport 5. session 6. presentation 7. application






20. It interacts with the application layer to determine which network services will be required






21. size is whatever the length of the UDP portion of the packet. Could be as large as 65 -535






22. It interacts with data and prepares it to be transmitted across the network. It ensures reliable connectivity from end-to-end






23. A sends a SYN packet to B - B acknowledges with a SYN/ACK - A replies with ACK






24. A list of files is defined that should be monitored for a change - HIDS software calculates a one-way hash for each file - if a change is made to the file - the hash is changed






25. flags anomalous conditions in traffic on the network - requires understanding on what is normal - bases good traffic as a baseline






26. Allows segmentation of a switch into different networks - regardless of where a system is plugged in - creates separate networks through software not hardware

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27. Multiple levels of protection must be deployed - an exercie in detection - measures must be across a wide range of controls - compromises happen when people leave sites - risk - CIA triad - strategies






28. Stateful firewalls maintain state of traffic flows






29. Simplest form of a research honeypot - useful in identifying nature of TCP scans - allows attacker to complete 3-way handshake - listens on a defined port - logs incoming requests for analysis






30. Unified data carrying service - replacing from replay and ATM






31. Simple attack done by simply browsing available information that's allowed on a local network.






32. Prepends to the beginning of the file and gains control when the first instruction of the infected COM file is executed - appending to the end - virus writes its payload to the end and inserts jump instruction as the first instruction - which execute






33. Connects the physical part of the network (cables) with the abstract (packets and datastreams)






34. Replicates traffic onto all ports - no traffic monitoring - cannot control which ports should or shouldn't receive frames - forming a large collision domain.






35. A hash is produced when applied to a monitored file. The hash always generates the same value unless a change was made. HIDS software checks the hashes of monitored files and if a change is found - analyst is notified. - ie: tripwire






36. Strips OS commands and characters from input - avoid making system calls from within the app * especially based on user input






37. An FTP that allows downloads only if the user knows the exact name of the file they're looking for






38. Improper deployment can increase attack risk - if production systems aren't sufficiently protected - they can be vulnerable from a honeypot - legal liability






39. True positive - false positive - true negative - false negative






40. logic bomb - trojan horse - trap door






41. Attacks systems through known vulnerabilities - automatically scans for more systems to attack - lowers system defenses - installs rootkit or root shell - opens up back doors - self contained malware that can copy itself






42. Not frequently seen on LANs because of expense - because of its traffic predictability and high bandwidth support - it's good for video streaming - encapsulates common protocols - uses virtual path identifiers to create end to end connectivity - has






43. An agreement on how different computer will work - protocols define the format and order of messages and what to do upon receipt of the messages - basically the rules of the network






44. A low end firewall that can quickly be deployed using existing hardware. They examine packets themselves with no content.






45. Unencrypted message in its original form






46. Provides insight into traffic on the network - help detect problems with network operations - provides auditing for other security measures






47. Combines the functionality of a hub and bride into a single device - keeps track of MACs attached to each port






48. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






49. An appliance that controls access between public internet and a companies private network - or between a PC NIC and the rest of the PC.






50. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum