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






2. Known - unknown - zero day






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






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






5. flags anomalous conditions in traffic on the network - requires understanding on what is normal - bases good traffic as a baseline






6. 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






7. 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






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






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






10. True positive - false positive - true negative - false negative






11. 53 bytes - 48 bytes for data - 5 bytes for the header






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






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






14. logic bomb - trojan horse - trap door






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






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






17. 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






18. 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






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






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






21. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






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






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






24. 20 - FTP data - 21 - FTP - 23 - Telnet - 25 - SNMP - 53 - DNS - 79 - Finger - 80 - HTTP - 110 - POP - 443 - HTTPS






25. removable media - email attachments - web browsing - social networking - network vulnerabilities - IM applications - p2p






26. Considered to be a perimeter device






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






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






29. 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






30. Confidentiality - integrity - availability






31. Message in its encrypted form






32. Confidentiality - integrity - availability






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






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






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






36. 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






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






38. 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






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






40. 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






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






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






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






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






45. 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






46. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






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






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






49. Infects MBR - no network spreading potential






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