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. Attacks systems through known vulnerabilities - automatically scans for more systems to attack - lowers system defenses - installs rootkit or root shell - opens up back doors - self contained malware that can copy itself






2. Most commonly used transport protocol today - ensures reliable packet delivery - has error handling built in






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






4. Simplest form of a research honeypot - useful in identifying nature of TCP scans - allows attacker to complete 3-way handshake - listens on a defined port - logs incoming requests for analysis






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






6. A spoofed IP is used to send a SYN to the target. It then responds with a SYN/ACK that never receives the final ACK to complete the handshake. This occupies a portion of the target's pre-established buffer for TCP and can prevent the target from acce






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






8. Protected at rest - protected in transit - secure the key






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






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






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






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






13. Stateful firewalls maintain state of traffic flows






14. Allows segmentation of a switch into different networks - regardless of where a system is plugged in - creates separate networks through software not hardware

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15. Protects internal/external systems from attack - filters communications based on content - performs NAT - encrypts communications for VPN - logging to aid in intrusion detection






16. 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.






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






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






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






20. 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






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






22. -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






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






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






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






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






27. Message in its encrypted form






28. 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






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






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






31. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






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






33. OSI






34. Considered to be a perimeter device






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






36. 20 - FTP data - 21 - FTP - 23 - Telnet - 25 - SNMP - 53 - DNS - 79 - Finger - 80 - HTTP - 110 - POP - 443 - HTTPS






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






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






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






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






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






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






44. Confidentiality - integrity - availability






45. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






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






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






48. Work groups that require additional protection are segmented from the rest of the internal organization - restricting access to critical segments - system of VPNs - internal firewall - VLANs and ACLs






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






50. 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.







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