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






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






3. Wide Area Network - Larger than MAN or LAN - uses public network - phone lines - and leased lines to tie LAN and MAN over a dispersed area






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






5. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






6. Intellectual property - business goals - validated data - historical






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. Weakness in a system - inherent in a complex system - majority are due to poor coding - gateway by which threats are manifested






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






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






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






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






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






14. 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






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






16. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






17. 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






18. 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






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






20. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






21. logic bomb - trojan horse - trap door






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






23. 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






24. 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






25. 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






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






27. Trying to ID modems in a telephone exchange that may be susceptible to compromise






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






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






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






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






32. Means multiple iterations won't matter. If you encrypt with a key - then re-encrypt - it's the same as using one key.






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






34. -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






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






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






37. 53 bytes - 48 bytes for data - 5 bytes for the header






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


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






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






41. Spread as an office attachment with executable code programmed using macro facility - targets are data files - visual basic editor and other macro languages - payload executes when the code is launched






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






43. 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






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






45. 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.






46. Network scanner.






47. 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






48. 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






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






50. OSI