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






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






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






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






5. 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






6. 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






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






8. Stateful firewalls maintain state of traffic flows






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






10. 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






11. 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






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






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






14. 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






15. Provides insight into traffic on the network - help detect problems with network operations - provides auditing for other security measures






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






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






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






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






20. Unencrypted message in its original form






21. 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






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






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






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






25. Not a replacement for firewalls - hardening - strong policies - or other DiD methods - low maintenance - inexpensive






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






27. 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.






28. Known - unknown - zero day






29. 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






30. Infects MBR - no network spreading potential






31. logic bomb - trojan horse - trap door






32. A system resource that has no legitimate purpose or reason for someone to connect to it - its purpose is to draw in attackers to understand how they break into a system






33. 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






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






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






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






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






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






39. 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






40. 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






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






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






43. Message in its encrypted form






44. 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






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






46. Replicates traffic onto all ports - no traffic monitoring - cannot control which ports should or shouldn't receive frames - forming a large collision domain.






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






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. 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






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