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






2. Most commonly used transport protocol today - ensures reliable packet delivery - has error handling built in






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






4. 192.0.0.0 through 223.255.255.255 - subnet mask of 255.255.255.0






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






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






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






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






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. Migrate to WPA2 - use strong authentication like PEAP or TTLS - audit network installations - require mutual auth between client and infrastructure equipment






12. 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






13. Infects MBR - no network spreading potential






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






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






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






17. 1 and 2 - Voice/Low speed data - 3 - Voice/Data 10Mb - 4 - Voice/Data 16Mb - 5 - 5e - Voice/Data 100Mb to 1Gb - 6 - Standard for gigabit






18. 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






19. 8 bytes per packet - UDP SRC port - UDP DST Ports - UDP length - UDP Checksum






20. When someone has compromised the integrity of data or a program. Allows attackers to create backdoors.






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






22. Considered to be a perimeter device






23. 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






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






25. 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






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






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






28. 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






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






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






31. 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






32. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






33. 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






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






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






36. True positive - false positive - true negative - false negative






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






38. -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






39. 53 - DNS - 67 - BootP - 68 - BootP - 69 - TFTP - 123- NTP - 137-139 NBT - 161 - SNMP - 162 - SNMP - 2049 - NFS






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






41. Syn - Syn/Ack - Ack






42. Attaches itself to existing program files and activated when the exe is launched






43. 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






44. Most common approach - firewall - VPN - intrusion detection - AV - disk encryption - all parts of the organization receive equal protection - particularly vulnerable to malicious inside attacks






45. Switches along the path can be requested to allocate the desired amount of bandwidth. If the circuit has the required bandwidth - the circuit is set up.






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






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






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






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






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