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






2. Uses a 1 to 1 substitution of arbitrary numbers - given a one character mapping - you cannot determine the key






3. 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






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






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






6. 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.






7. Isolates systems when they initially connect to the network - allows systems to be scanned and checked prior to being put on a trusted segment






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






9. Netmasks or subnets provide a method for identifying what portion of an address is the network - and what portion is the host






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






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






12. 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






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






14. Stateful firewalls maintain state of traffic flows






15. An attacker spoofs the victim's IP and sends an ICMP ECHO request to the broadcast address of a network. When every system responds - a DoS occurs.






16. Message in its encrypted form






17. Switches along the path can be requested to allocate the desired amount of bandwidth. If the circuit has the required bandwidth - the circuit is set up.






18. Take the file and try to compress it. If it compresses - it means there is a pattern and it's more easily crackable

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






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






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






22. Uses a 1 to 1 substitution of characters - rotate the alphabet by 'n' number of characters - rot+X means rotate the letters X characters






23. ATM supports two types of virtual circuits: permanent virtual circuits and switches virtual circuit - PVC is set up in advance - usually manually - SVC is established automatically through a signaling protocol and can be created on the fly - establis






24. 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






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






26. OSI






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






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






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






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






31. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






32. Unencrypted message in its original form






33. Wide Area Network - Larger than MAN or LAN - uses public network - phone lines - and leased lines to tie LAN and MAN over a dispersed area






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






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. One is for talking - one is for implementing






37. Known - unknown - zero day






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






39. Spread as an office attachment with executable code programmed using macro facility - targets are data files - visual basic editor and other macro languages - payload executes when the code is launched






40. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






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






42. Slow - requires stateful data tracking - inspects all fields - including variable-length fields






43. Intellectual property - business goals - validated data - historical






44. True positive - false positive - true negative - false negative






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






46. Parasitic malware - boot record infector - macro - COM/Script program infector - EXE program infector






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






48. Considered to be a perimeter device






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






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