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






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






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






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






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






6. 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






7. Free linux WLAN analysis tool - completely passive - cannot be detected - supports advanced GPS integration and mapping features - used for wardriving - WLAN vulerability assessment






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






9. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






10. Network scanner.






11. 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.






12. Take the file and try to compress it. If it compresses - it means there is a pattern and it's more easily crackable

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13. 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






14. Confidentiality - integrity - availability






15. Combines the functionality of a hub and bride into a single device - keeps track of MACs attached to each port






16. Confidentiality - integrity - availability






17. 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






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






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






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






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






22. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






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






24. Stateful firewalls maintain state of traffic flows






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






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






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






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






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






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






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






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






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






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






35. Unencrypted message in its original form






36. One is for talking - one is for implementing






37. Protects internal/external systems from attack - filters communications based on content - performs NAT - encrypts communications for VPN - logging to aid in intrusion detection






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






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






40. True positive - false positive - true negative - false negative






41. -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






42. 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






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






44. Used for connecting two physical segments of a network - segments traffic - breaks up collision domains - not generally used because of switches






45. 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






46. 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






47. 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






48. logic bomb - trojan horse - trap door






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






50. 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