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CISSP Telecom And Network Security

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Type of network layout that separates and group computers logically.






2. 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.






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






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






5. 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.






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






7. Strengths of a type of firewall: application independence - high performance - and scalability. Weaknesses include low security - no protection above the network layer.






8. Type of topology that Uses linear single cable for all computers attached. All traffic travels full cable and can be viewed by all other computers.






9. 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.






10. Wireless standard that will improve security of wireless communication






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






12. Device used within companies to provide multiple services to users throughout a building or facility. Example - dialing 9 to place outbound phone calls. Security concerns: default configurations and passwords - maintenance modems disabled - unused co






13. Type of firewall that keeps track of each communication session. It must maintain a state table that contains data about each connection. 3rd generation firewall - runs at the network layer.






14. Type of firewall that uses a proxy for each service and can understand and make decisions on the protocols used and the commands within those protocols - runs at the application layer.






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






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






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






19. In the OSI layer 5 - these are the types of what?






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






21. 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.






22. Standard that outlines wireless personal area network (WPAN) technologies.






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






24. Protocol that translates a MAC address into an IP address.






25. 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.






26. A packet switching technology that is used by telecommunication services for data-only traffic. It is a subscriber based service that operates within the network and data link layers.






27. 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.






28. 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.






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






30. Layer 3 - layer 4 - and other layer switches have more enhanced functionality than layer 2 switches. Combines switching and routing technologies - packet inspection - traffic prioritization - and quality of service (QoS).






31. 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.






32. Wireless communication that splits total amount of bandwidth into smaller sub-channels. Send and receiver work in one of the channels for a period of time - and then move into a different channel. It uses a portion of the bandwidth - throughput of 1-






33. 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.






34. OSI layer that provides physical connections for transmission and performs the electrical encoding of data. This layer transforms bits to electrical signals. Protocols at this level HSSI (High Speed Serial Interface) - X.21 - EIA/TIA 232 and 449.






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






36. 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.






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






38. Protocol that translates IP address into a MAC address (physical Ethernet address)






39. Protocol that is used by remote users to authenticate over PPP lines. Sends passwords over clear text. Vulnerable to MITM attacks.






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






41. Protocol for allowing multi-cast (one to many) communication






42. 4: Application - 3: Host-to-Host - 2: Internet - 1: Network Access - 3 -1 -1 -2 will map to the OSI model.






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






44. Type of ethernet implementation that uses a thicker coaxial cable - which allows a longer cable length to be used.






45. Type of cable that is more expensive than UTP and STP - more resistant to EMI - can carry baseband and board band technologies.






46. 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.






47. OSI layer that prepares data for the network medium by framing it into LAN/WAN frames. Defines how the physical layer transmits the network packets. Protocols at this layer ARP (Address Resolution Protocol) - RARP (Reverse Address Resolution Protocol






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






49. 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.






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







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