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. CIDR is a shorthand way of specifying which portion of the address is the network - and which portion is the host






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






3. It allows the transport layer to detect when the UDP headers or the payload have been modified in transit






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






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






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






7. Program disguised as something helpful - only to perform actions the user did not intend. Opening ports - installing other programs - etc.






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






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






10. Bits of code embedded in programs to quickly gain access at a later time






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






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






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






14. Provides insight into traffic on the network - help detect problems with network operations - provides auditing for other security measures






15. Message in its encrypted form






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






17. Stateful firewalls maintain state of traffic flows






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






19. 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






20. 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






21. -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






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






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






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






25. 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 its corresponding IP address






26. True positive - false positive - true negative - false negative






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






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






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






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






31. 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






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






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






34. 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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35. 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.






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






37. 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.






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






39. Known - unknown - zero day






40. 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






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






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






43. 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






44. Hash Authentication - asymmetric - non repudiation - digital signature - hash + asymmetry






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






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






47. Outside attack from network - Outsider attack from telephone - Insider attack from local network - insider attack from local system - attack from malicious code






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






49. 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






50. 128.0.0.0 through 191.255.255.255 - with a subnet mask of 255.255.0.0






Can you answer 50 questions in 15 minutes?



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