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






2. Syn - Syn/Ack - Ack






3. 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






4. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






5. Application layer attacks may get through - dialup - VPN - extranet connections may bypass firewalls






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






7. Confidentiality - integrity - availability






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






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






10. 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






11. OSI






12. 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.






13. -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






14. When someone has compromised the integrity of data or a program. Allows attackers to create backdoors.






15. Uniform protection - protected enclaves - information centric - threat vector analysis






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






17. 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






18. Handles the network address scheme and connectivity of multiple network segments. It handles communication.






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






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






21. A cracking tool inserted into the OS that allows the attacker to do as they please.






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






23. 53 bytes - 48 bytes for data - 5 bytes for the header






24. 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






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






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






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






28. 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






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






30. True positive - false positive - true negative - false negative






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






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






33. Intrusion detection system - it reports attacks against monitored systems/networks






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






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






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






37. Considered to be a perimeter device






38. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






39. 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






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






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






42. Confidentiality - symmetric encryption






43. 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






44. Stateful firewalls maintain state of traffic flows






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






46. 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






47. 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






48. Means multiple iterations won't matter. If you encrypt with a key - then re-encrypt - it's the same as using one key.






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






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