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






2. fast - with little fidelity - examines header information and limited payload data






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






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






5. 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






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






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






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






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






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






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






12. 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






13. OSI






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






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






16. 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






17. local area network - small network confined to small location - all equipment owned by a single entity - vulnerable to inside threats and logic bombs






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






19. 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






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






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






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






23. Confidentiality - symmetric encryption






24. Outside attack from network - Outsider attack from telephone - Insider attack from local network - insider attack from local system - attack from malicious code






25. Full open - half open (stealth scan) - UDP - Ping






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






28. 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






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






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






31. 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






32. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






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






34. Uses inclusive or exclusive lists - inclusive analysis utilizes a list of keywords - exclusive analysis utilizes a list of events that can be ignored






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






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






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






38. 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






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






40. 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






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






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






43. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






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






45. Message in its encrypted form






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






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






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






50. Syn - Syn/Ack - Ack