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. Known - unknown - zero day






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






3. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






4. Message in its encrypted form






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






6. 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






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






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. Personal area network - phone tethering - bluetooth - etc






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






11. Network scanner.






12. 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






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






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






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






16. The practice of sending an ACK inside another packet going to the same destination






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






18. 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






19. Simplest form of a research honeypot - useful in identifying nature of TCP scans - allows attacker to complete 3-way handshake - listens on a defined port - logs incoming requests for analysis






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






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






22. OSI






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






24. 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






25. It interacts with the application layer to determine which network services will be required






26. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






27. 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






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






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






30. Bits of code embedded in programs to quickly gain access at a later time






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






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






33. 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






34. logic bomb - trojan horse - trap door






35. 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






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






37. 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






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






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






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






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






42. Stateful firewalls maintain state of traffic flows






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






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






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






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






47. An attacker spoofs the victim's IP and sends an ICMP ECHO request to the broadcast address of a network. When every system responds - a DoS occurs.






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






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






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