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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. The original technique to digitized voice with 8 bits of sampling 8 -000 times per second - which yields 64 Kbps for one voice channel.






2. An older protocol that was used by ISP's to encapsulate data to be sent over dial up connections






3. 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.






4. A simplified version of X.25 - without the error checking that was done on the network. It handles error checking at the end node - which helps improve speed dramatically.






5. Both directions - both applications can send information at a time. Session Layer Communication Modes






6. Used when companies do not want systems to know internal hosts IP addresses. Enables companies to use private - nonroutable IP addresses.






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






8. 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.






9. 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.






10. Server that can be configured to hang up and call back remote users - but this can be compromise by enabling call forwarding.






11. 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.






12. 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.






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






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






15. Type of cabling problem signals from one wire crossing over to another wire.






16. Protocol based on the first version - however this version allows for fixed bandwidth to be allocated for specific applications.






17. Firewall that does not require a proxy for each service; does not provide detailed access control; but does provide for a wider range of protocols.






18. Protocol that is best-effort - connectionless - and does not sent acknowledgements.






19. 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.






20. OSI layer that sets up - maintains - and breaks down the dialog (session) between two applications. Controls dialog organization and synchronization. Protocols that work at this layer are NFS (Network File System) - SQL - NetBIOS - RPC.






21. Older LAN implementation that uses a token-passing technology. Can send a beacon frame to indicate that a certain computer is failing and its neighbors should reconfigure and work around the detected fault.






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






23. Protocol that transfers data in fixed cells (53 bytes) - is a WAN technology - and transmits data at very high rates. Supports voice - data - and video applications.






24. 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.






25. Created because it was clear that available IP addresses were running out. Provides flexibility to increase or decrease the IP classes sizes as necessary.






26. Combines voice and data over the same IP network media and protocol. Reduces the cost of implementing and maintaining two different networks.






27. 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.






28. Type of cabling problem where data is corrupted going from end to end due to surrounding devices.






29. 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.






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






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






32. Standard that addresses wireless MAN technologies.






33. OSI layer that has services and protocols required by the user's applications for network functionality. Example protocols include HTTP - SMTP - FTP - Telnet.






34. Transmits high speed bandwidth over phone lines. Provides data rates up to 52 Mpbs using line of 1000 feet or less. Must be within 2.5 miles of a central office.






35. This dedicated connection provides up to 1.544 Mbps bandwidth over 1 T1 and 24 time divided channels.






36. 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






37. A technique that allows multiple layers of nesting. Example - IPSec tunnel can originate or terminate at a different IPSec site along the way.






38. 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.






39. Most expensive type of WAN connection because the fee is based on distance between the two points rather than the amount of bandwidth used. Examples - T1 and T3.






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






41. OSI layer that provides routing - addressing - and fragmentation of packets. This layer can determine alternative routes to avoid network congestion. Protocols that use this layer are IP - ICMP - RIP - OSPF (Open Shortest Path First) - BGP (Border Ga






42. The process of simulating a 2600Hz frequency tone - which allowed attackers to gain free long distance phone service.






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






44. Network segment name for a DMZ created by two physical firewalls.






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






46. Type of ethernet implementation that uses a standard coaxial cable with a maximum cable length of 185 meters. 10Mbps.






47. New variant to traditional email spam on VoIP networks.






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






49. 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.






50. If the packet header information is used to determine destinations rather than the routes configured into the router. Packets with this information should be dropped.