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






2. 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






3. Message in its encrypted form






4. 53 bytes - 48 bytes for data - 5 bytes for the header






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






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






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






8. Going around with equipment to detect wireless networks






9. A time of check/time of use attack that exploits the difference in between when a security control was applied and the time the service was used.






10. A spoofed IP is used to send a SYN to the target. It then responds with a SYN/ACK that never receives the final ACK to complete the handshake. This occupies a portion of the target's pre-established buffer for TCP and can prevent the target from acce






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






12. 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






13. 1.0.0.0 through 127.255.255.255 - subnet mask starts at 255.0.0.0






14. 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






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






16. Stateful firewalls maintain state of traffic flows






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






18. 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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19. Malware - insider threat - natural disaster - terrorism - pandemic






20. 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






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






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






23. War dialing - war driving - Sniffing - eavesdropping - dumpster diving - social engineering






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






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






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






27. Syn - Syn/Ack - Ack






28. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






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






30. 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






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






32. 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.






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






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






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






36. 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






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






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






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






40. A TCP version of ping - sends custom TCP packets to a host and listens for replies - enables port scanning and spoofing simultaneously






41. Confidentiality - integrity - availability






42. 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






43. Provides insight into the tactics - motives - and attacker tools






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






45. 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






46. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






47. Not frequently seen on LANs because of expense - because of its traffic predictability and high bandwidth support - it's good for video streaming - encapsulates common protocols - uses virtual path identifiers to create end to end connectivity - has






48. Switches networks make it difficult to monitor traffic in promiscuous mode - topology must be able to support traffic aggregation for monitoring






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






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