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. 1 and 2 - Voice/Low speed data - 3 - Voice/Data 10Mb - 4 - Voice/Data 16Mb - 5 - 5e - Voice/Data 100Mb to 1Gb - 6 - Standard for gigabit






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






3. 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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4. 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






5. Switches networks make it difficult to monitor traffic in promiscuous mode - topology must be able to support traffic aggregation for monitoring






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






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






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






9. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






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






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






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






13. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






14. Confidentiality - integrity - availability






15. Infects MBR - no network spreading potential






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






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






18. OSI






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






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






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






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






23. True positive - false positive - true negative - false negative






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






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






26. Used for connecting two physical segments of a network - segments traffic - breaks up collision domains - not generally used because of switches






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






28. 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






29. Known - unknown - zero day






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






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






32. 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






33. FIN 130 - ACK 131 - FIN 570 - ACK 571






34. Free linux WLAN analysis tool - completely passive - cannot be detected - supports advanced GPS integration and mapping features - used for wardriving - WLAN vulerability assessment






35. 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






36. Handles transmissions across the physical media like wires - fiber - etc






37. War dialing - war driving - Sniffing - eavesdropping - dumpster diving - social engineering






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






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






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






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






42. 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






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






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






45. Hash Authentication - asymmetric - non repudiation - digital signature - hash + asymmetry






46. Going around with equipment to detect wireless networks






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






48. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






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






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