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. 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.






2. removable media - email attachments - web browsing - social networking - network vulnerabilities - IM applications - p2p






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






4. 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






5. Going around with equipment to detect wireless networks






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






7. Anonymous FTP - FTP passes through clear text - Bounce attacks with the PORT command - user can cause an FTP to open a connection from the FTP's own commands and bypass a firewall






8. 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






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






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






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






12. 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






13. Uses flow control to handle network congestion - can send larger amounts of data per packet - has guaranteed delivery of transmitted data - better protection against spoofing - reduces need for error checking at higher OSI layers






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






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






16. Infects MBR - no network spreading potential






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






18. Allows admins to remotely access a system for troubleshooting. - E.g VNC - GoToMyPc - PC Anywhere






19. Considered to be a perimeter device






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






21. 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






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






23. 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






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






25. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






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






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






28. Multiple levels of protection must be deployed - an exercie in detection - measures must be across a wide range of controls - compromises happen when people leave sites - risk - CIA triad - strategies






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






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






31. An attacker spoofs the victim's IP and sends an ICMP ECHO request to the broadcast address of a network. When every system responds - a DoS occurs.






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






33. 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






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






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






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






37. Confidentiality - integrity - availability






38. destruction of data - leaking confidential information - providing backdoor access






39. Publish separate mail - web - and DNS servers to the internet - provide appropriate access from internal network to internet - protect internal from external attack - provide defense in depth - protect all aspects of the system






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






41. Confidentiality - integrity - availability






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






43. True positive - false positive - true negative - false negative






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






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






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






47. 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






48. Weakness in a system - inherent in a complex system - majority are due to poor coding - gateway by which threats are manifested






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






50. 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