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






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






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






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






5. 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






6. 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






7. 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






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. 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






10. 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






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






12. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






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






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






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






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






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






18. 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






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






20. 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






21. low interaction production honeypot - network daemon that can simulate other hosts - each host can appear as a different OS






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






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






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






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






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






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






28. 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






29. 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.






30. -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






31. Allows admins to remotely access a system for troubleshooting. - E.g VNC - GoToMyPc - PC Anywhere






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






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






34. Confidentiality - symmetric encryption






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






36. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






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






38. 20 - FTP data - 21 - FTP - 23 - Telnet - 25 - SNMP - 53 - DNS - 79 - Finger - 80 - HTTP - 110 - POP - 443 - HTTPS






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






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






41. Uniform protection - protected enclaves - information centric - threat vector analysis






42. A cracking tool inserted into the OS that allows the attacker to do as they please.






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






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






45. The Practice of sending an ACK inside another packet going to the same destination






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






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


48. 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






49. Spread as an office attachment with executable code programmed using macro facility - targets are data files - visual basic editor and other macro languages - payload executes when the code is launched






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