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. 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






2. Stateful firewalls maintain state of traffic flows






3. 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






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






5. rules indicate criteria in packets that represent events of interest - rules are applied to packets as they are received - alerts are created when matches are found






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






7. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






8. 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






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






10. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






11. One is for talking - one is for implementing






12. -Malicious code might execute destructive overwrite to hard disks -Malicious mas mailing code might expose sensitive information to the internet - web server compromise might expose organization to ridicule - Web server compromise might expose custom






13. 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






14. 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






15. Not a replacement for firewalls - hardening - strong policies - or other DiD methods - low maintenance - inexpensive






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






17. An attempt to gain access by bombarding it with guesses until the password is found.






18. It handles the establishment and maintenance of connections between systems






19. 53 bytes - 48 bytes for data - 5 bytes for the header






20. UDP based infection - infected through vulnerability in SQL server - caused DoS on saturated networks






21. Migrate to WPA2 - use strong authentication like PEAP or TTLS - audit network installations - require mutual auth between client and infrastructure equipment






22. 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






23. Personal area network - phone tethering - bluetooth - etc






24. Provides insight into the tactics - motives - and attacker tools






25. keeps the same letters - but changes the position within the text - easy to break - can be combined with substitution






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






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






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






29. 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






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






31. Network scanner.






32. fast - with little fidelity - examines header information and limited payload data






33. local area network - small network confined to small location - all equipment owned by a single entity - vulnerable to inside threats and logic bombs






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






35. Malware - insider threat - natural disaster - terrorism - pandemic






36. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






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






38. Full open - half open (stealth scan) - UDP - Ping






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






40. Syn - Syn/Ack - Ack






41. Uses flow control to handle network congestion - can send larger amounts of data per packet - has guaranteed delivery of transmitted data - better protection against spoofing - reduces need for error checking at higher OSI layers






42. Relies on executable code insertion and user interaction to spread






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






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






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






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






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






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






49. It allows the transport layer to detect when the UDP headers or the payload have been modified in transit






50. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS