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CISSP Telecom And Network Security

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. Strengths of a type of firewall: Better security than packet filtering. Looks at all info in the packet - up to the application layer. Breaks the connection between trusted and untrusted systems. Weaknesses include limited number of applications supp






2. OSI layer that formats data into a standardized format and deals with the syntax of data - not the meaning. Example formats are ASCII - GIF - JPG - MPEG.






3. Standard that addresses wireless MAN technologies.






4. Type of cabling problem where loss of signal strength occurs as it travels due to cable exceeding its recommended length.






5. This network technology determines which system will send data based on which one has the token.






6. VPN protocol that can run in other networks (frame relay - X.25 - ATM). Does not provide encryption - lacks the security to be called a true "VPN" solution.






7. Protocol based on the SDLC protocol - except it is an open protocol - supports full-duplex connections - and provides a higher throughput. It also provides polling - which enables secondary units to communicate with primary units.






8. Problems: If one station experiences a problem - it can negatively affect surrounding computers on the same cable.






9. This is a standard for fiber-optic cabling and uses self-healing network rings. This standard describes the interfaces that can be used over fiber lines and the signaling that can be employed. Works at the physical layer of the OSI model.






10. Protocol that works at the network layer and informs hosts - routers - and devices of network or computer problems. It is the major component of the ping utility.






11. Altering an ARP table so an IP address is mapped to a different MAC address. Results in traffic being routed to an attacker's computer.






12. Type of network device that is the simplest type of connectivity because it only repeats and amplifies electric signals between cable segments. Works at the physical layer.






13. Security wireless standard that rotates encryption keys - stronger IV values - MAC codes for packet integrity. Works in combination with WEP.






14. More complexity and drastically increases the difficultly of access control. Many different devices - services - and users make it difficult to know which entities to trust and to what degree.






15. These are used to connect multiple switches for traffic of the same classification. Example - two voice switches at a local phone company's central office.






16. Premium service offered by service providers in frame relay networks that guarantees a company a specified amount of bandwidth.






17. Faster because processing is done in the kernel. One network stack is created for each packet. 5th generation firewall - runs at the application layer.






18. Type of network that allows large IP ranges to be divided into smaller - logical - and easier to maintain network segments.






19. Both directions - only one application can send information at a time






20. OSI layer 2 Sub-layers. The first provides a standard interface for the network protocol being used. The second provides a standard interface for the physical layer protocol being used.






21. Type of firewall that Inspects incoming/outgoing messages for malicious information. If approved - transfers an isolated copy from one network to another. 2nd generation firewall.






22. Type of host that is locked down - hardened - system. Systems installed in the DMZ (firewalls - servers) should be installed on this type of host.






23. Developed to replace the aging telephone and analog systems. BRI rate that uses two B channels (send/receive) - and one D channel (control information) - and PRI rate that uses up to 23 B channels. Supports voice - data - and video. Provides up to 1.






24. Dynamically builds ACL's to allow internal systems to communicate with external systems. Once the connection is finished - the ACL is removed from the list. 4th generation firewall.






25. OSI layer that provides end to end transmission between computer systems. Protocols that use this layer are TCP (Transmission Control Protocol) - UDP (User Datagram Protocol) - SPX (Sequenced Packet Exchange) - and SSL.






26. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.






27. Wireless LAN standard that operates in a 2.4Ghz range - 11Mbps - DSSS






28. Communication devices that determine synchronization scheme before data transmission.






29. Type of topology where all computers are connected by a unidirectional transmission link - and the cable is in a closed loop.






30. Standard for transmitting data across the Internet. One is reliable and connection oriented. The other is unreliable and connectionless.






31. Type of firewall that lies between the perimeter router and and LAN.






32. Type of backbone network that joins together LAN to other LANs and WANs to LANs - etc. Typically known as Synchronous Optical Networks (SONETS) or FDDI rings.






33. VPN protocol that works at the data link layer - can only run in IP networks - and provides encryption and encapsulation. This is Microsoft's VPN solution.






34. Type of topology that where all computers are connected to a central device (AKA hub) - which provides more resilience for the network.






35. Type of ethernet implementation that uses twisted-pair copper wiring and transmits at 100Mbps.






36. Type of cable that carries data as light waves - expensive - can transmit data at high speeds - difficult to tap into - and is resistant to EMI. Most secure cabling option - but vulnerable to dispersion.






37. Protocol stack used instead of TCP/IP on wireless devices. The "gap" in this protocol involves translating its secure traffic to SSL or TLS - which is typically done by a 3rd party.






38. Type of firewall that is a proxy-based firewall solution. It is circuit-based and does not provide any application-based proxies.






39. Problems: Central device is a single point of failure.






40. Most commonly used LAN implementation today. Considered a "chatty" protocol because it allows all systems to hear each other's broadcasts. Has many collisions because all systems share the same medium. Can operate at 10 to 1000 Mbps.






41. In a token ring network - each computer is connected to this - which acts as a central hub.






42. Type of topology where computers all are connected to each other - which provides redundancy.






43. Type of network layout that separates and group computers logically.






44. Type of network layout that is a large geographical region connecting more that one LAN.






45. Wireless LAN standard that operates in a 5Ghz range - 54Mpbs - and uses OFDM spread spectrum.






46. Type of network device that links 2 or more network segments - where each segment can function as an independent network. Works at the network layer - works with IP addresses - and has more network knowledge than the other hardware.






47. This dedicated connection provides 45Mbps of bandwidth over 28 T1 lines and 672 time divided channels.






48. Network where a virtual connection that acts like a dedicated link between two systems is set up. Traffic travels in a predictable and constant manner. Example - telephone.






49. As they travel down the OSI model on the source computer - each layer adds its own information so the corresponding layer on the destination machine knows how to process the data.






50. VPN protocol that works at the network layer - handles multiple connections - provides secure authentication and encryption. Tunnel mode option (payload and header encrypted) - or transport mode (only payload is encrypted).






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