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






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






3. 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






4. Syn - Syn/Ack - Ack






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






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






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






8. Confidentiality - integrity - availability






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






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






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






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






14. Known - unknown - zero day






15. 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






16. Confidentiality - symmetric encryption






17. Most commonly used transport protocol today - ensures reliable packet delivery - has error handling built in






18. 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






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






20. 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






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






22. 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






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






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






25. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






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






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. 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






29. CIDR is a shorthand way of specifying which portion of the address is the network - and which portion is the host






30. 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






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






32. Improper deployment can increase attack risk - if production systems aren't sufficiently protected - they can be vulnerable from a honeypot - legal liability






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






34. 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






35. Stateful firewalls maintain state of traffic flows






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






37. Handles transmissions across the physical media like wires - fiber - etc






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






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






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






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






42. Connects many WANs - MANs - and LANs - provided via ISP






43. 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






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






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






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






47. Confidentiality - integrity - availability






48. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






49. open source tool for monitoring - can be used as a NIDS - has quick updates and flexibility for custom rules






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