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. Relies on executable code insertion and user interaction to spread






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






3. Confidentiality - integrity - availability






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






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






6. 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






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






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






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






10. 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 it's corresponding IP address






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. -Malicious code might execute destructive overwrite to hard disks -Malicious mas mailing code might expose sensitive information to the internet - web server compromise might expose organization to ridicule - Web server compromise might expose custom






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






15. 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






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






17. 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






18. Known - unknown - zero day






19. 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






20. 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






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






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






23. Connection oriented - before systems can communicate over an ATM network - they must establish a virtual circuit between each other - this can span across multiple ATM switches that also handle communications for other systems - at the end of the con






24. Physical layer - Data link layer - Network Layer - Transport Layer - Session Layer - Presentation Layer - Application Layer






25. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






26. 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






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






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






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






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






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






32. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






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






34. Allows segmentation of a switch into different networks - regardless of where a system is plugged in - creates separate networks through software not hardware

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35. Infects the EXE and make them operate slightly different - when infected - exe header sizes are altered to point to the appended viral code






36. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






37. Handles the network address scheme and connectivity of multiple network segments. It handles communication.






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






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






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






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






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






43. Maintains complete TCP connection state and sequencing through 2 connections - address translation built-in by virtue of second connection above






44. 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






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






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






47. 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.






48. 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






49. Take the file and try to compress it. If it compresses - it means there is a pattern and it's more easily crackable

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50. Infects MBR - no network spreading potential