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






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






3. 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






4. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






5. 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.






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






7. Parasitic malware - boot record infector - macro - COM/Script program infector - EXE program infector






8. deployment challenges including topology and access limitations - analyzing encrypted traffic - quantity vs. quality of signatures - performance limitations with extensive analysis techniques - very costly for proper management






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






10. 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






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






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






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






14. Confidentiality - symmetric encryption






15. An agreement on how different computer will work - protocols define the format and order of messages and what to do upon receipt of the messages - basically the rules of the network






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






17. logic bomb - trojan horse - trap door






18. 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






19. Unencrypted message in its original form






20. Stateful firewalls maintain state of traffic flows






21. 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






22. Threat requires a vector to cross the vulnerability - stop the ability of the threat to use the vector






23. 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






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






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






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






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






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






29. 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






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






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






32. 53 bytes - 48 bytes for data - 5 bytes for the header






33. Network traffic to the host - typically listens on all interface - uses signature analysis to identify events of interest






34. 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






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






36. 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






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






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






39. Network scanner.






40. 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






41. Confidentiality - integrity - availability






42. 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.






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






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






45. Known - unknown - zero day






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






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






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






49. 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






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