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. 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






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






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






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






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






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






7. 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






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






9. 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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10. NTP - BootP/DHCP - NFS file systems - SNMP - TFTP






11. 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






12. Known - unknown - zero day






13. 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






14. True positive - false positive - true negative - false negative






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






16. 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






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






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






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






21. An FTP that allows downloads only if the user knows the exact name of the file they're looking for






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






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






24. 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






25. Confidentiality - integrity - availability






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






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






28. Message in its encrypted form






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






30. 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






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






32. Confidentiality - integrity - availability






33. OSI






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






35. A TCP version of ping - sends custom TCP packets to a host and listens for replies - enables port scanning and spoofing simultaneously






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






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






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






39. Going around with equipment to detect wireless networks






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






41. Infected millions through various methods - vulnerability in the MS Server Service - brute force admin password through network shares - infect removable devices with a malicious autorun script






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






43. Network scanner.






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






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






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






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






48. Stateful firewalls maintain state of traffic flows






49. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






50. 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