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. open source tool for monitoring - can be used as a NIDS - has quick updates and flexibility for custom rules






2. Poor programming without error checking can allow commands to be run in an input field. This can point to a command further in the buffer that will execute the attacker's payload.






3. Physical layer - Data link layer - Network Layer - Transport Layer - Session Layer - Presentation Layer - Application Layer






4. The practice of sending an ACK inside another packet going to the same destination






5. It makes sure the data sent from one side to the other is in a format useful to the other side






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






7. The Practice of sending an ACK inside another packet going to the same destination






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






9. An attacker recruits zombie systems ahead of time to simultaneously release a flood of traffic at a specific target.






10. 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






11. True positive - false positive - true negative - false negative






12. Used by IDS for a baseline before analysis - attackers will try to de-normalize traffic to evade detection - IDS will normalize data for understood protocols






13. Protected at rest - protected in transit - secure the key






14. CIDR is a shorthand way of specifying which portion of the address is the network - and which portion is the host






15. risk = threat x vulnerability - impossible to eliminate - security is an exercise in loss reduction






16. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






17. Identify critical assets and provide layered protection - data is accessed by applications - applications reside on hosts - hosts operate on networks






18. removable media - email attachments - web browsing - social networking - network vulnerabilities - IM applications - p2p






19. Worms and Wireless - modems - tunnel anything through HTTP - social engineering






20. Trying to ID modems in a telephone exchange that may be susceptible to compromise






21. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






22. Network traffic to the host - typically listens on all interface - uses signature analysis to identify events of interest






23. Program disguised as something helpful - only to perform actions the user did not intend. Opening ports - installing other programs - etc.






24. 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






25. deployment challenges including topology and access limitations - analyzing encrypted traffic - quantity vs. quality of signatures - performance limitations with extensive analysis techniques - very costly for proper management






26. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






27. destruction of data - leaking confidential information - providing backdoor access






28. Connection oriented - before systems can communicate over an ATM network - they must establish a virtual circuit between each other - this can span across multiple ATM switches that also handle communications for other systems - at the end of the con






29. Weakness in a system - inherent in a complex system - majority are due to poor coding - gateway by which threats are manifested






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






31. Trivial File Transfer Protocol - method to transfer files from one device to another without needing authentication






32. 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.






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






34. Small program triggered by an event that provides an action. E.g. scheduled file removal if countdown isn't reset - ie: employee was fired






35. Attempt to manipulate or trick a person into providing information or access - bypass network security by exploiting humans - vector is often outside attack by telephone or visitor inside






36. Resource exhaustion like DDoS or fork attack - unexpected input value the machine does not know how to process






37. Work groups that require additional protection are segmented from the rest of the internal organization - restricting access to critical segments - system of VPNs - internal firewall - VLANs and ACLs






38. 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






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






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






41. Anonymous FTP - FTP passes through clear text - Bounce attacks with the PORT command - user can cause an FTP to open a connection from the FTP's own commands and bypass a firewall






42. packet filter firewalls rely on TCP flags to determine connection state. Attacker can send ACK packets only to bypass firewall.






43. Syn - Syn/Ack - Ack






44. 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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45. low interaction production honeypot - network daemon that can simulate other hosts - each host can appear as a different OS






46. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






47. One is for talking - one is for implementing






48. Infects the EXE and make them operate slightly different - when infected - exe header sizes are altered to point to the appended viral code






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






50. Very simplistic. All systems are attached to the same cable segment. Rarely used because they're unreliable - low fault tolerance - poor traffic isolation - with limited scalability