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. 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






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






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






4. Most common approach - firewall - VPN - intrusion detection - AV - disk encryption - all parts of the organization receive equal protection - particularly vulnerable to malicious inside attacks






5. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






6. OSI






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






8. Four layers - Network Layer - Internet Layer - Transport Layer - Application layer






9. Prepends to the beginning of the file and gains control when the first instruction of the infected COM file is executed - appending to the end - virus writes its payload to the end and inserts jump instruction as the first instruction - which execute






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






11. 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.






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






13. logic bomb - trojan horse - trap door






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






15. Outside attack from network - Outsider attack from telephone - Insider attack from local network - insider attack from local system - attack from malicious code






16. Good for multimedia - can use small single packets - multicasting is required - speed is the highest priority






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






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






19. 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






20. 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






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






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






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






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






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






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






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






28. Infects MBR - no network spreading potential






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






30. 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






31. 53 bytes - 48 bytes for data - 5 bytes for the header






32. free windows based wireless scanner for 802.1b - detects access point settings - supports GSP integration - identifies networks as encrypted or unencrypted






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






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






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






36. Message in its encrypted form






37. NTP - BootP/DHCP - NFS file systems - SNMP - TFTP






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






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






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






41. True positive - false positive - true negative - false negative






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






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






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






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






46. 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






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






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






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






50. 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