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. size is whatever the length of the UDP portion of the packet. Could be as large as 65 -535






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






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






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






5. 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






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






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






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






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






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






11. Infects MBR - no network spreading potential






12. Going around with equipment to detect wireless networks






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






14. Considered to be a perimeter device






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






16. An attempt to gain access by bombarding it with guesses until the password is found.






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






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






19. 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.






20. 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.






21. 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






22. Identify critical assets and provide layered protection - data is accessed by applications - applications reside on hosts - hosts operate on networks






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






24. 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






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






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






27. An appliance that controls access between public internet and a companies private network - or between a PC NIC and the rest of the PC.






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






29. Stateful firewalls maintain state of traffic flows






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






31. Protocol for mapping an IP address to a physical machine address that is recognized on the local network. A table - usually called the ARP cache - is used to maintain a correlation between each MAC and its corresponding IP address






32. 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






33. Unencrypted message in its original form






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






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






36. 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






37. Network scanner.






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






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






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






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






42. 20 - FTP data - 21 - FTP - 23 - Telnet - 25 - SNMP - 53 - DNS - 79 - Finger - 80 - HTTP - 110 - POP - 443 - HTTPS






43. Intellectual property - business goals - validated data - historical






44. 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






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






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






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






48. 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






49. 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






50. 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