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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. 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.






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






3. Type of topology that uses a bus that does not have a one linear cable - but instead uses branches of cables. Commonly used in Ethernet.






4. 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.






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






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






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






8. 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.






9. Type of firewall that can be compromised if the OS does not have packet forwarding or routing turned off.






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






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






12. 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.






13. Type of wireless security standard that uses AES in CBC mode.






14. 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.






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






16. Wireless communication that distributes individual signals across the allocated frequencies.






17. The well known values range from 0-1023. FTP runs on 20 and 21 - SMTP runs on 25 - TFTP runs on 69 - DNS runs on 53 - HTTP runs on 80 - HTTPS runs on 443 - SNMP runs on 161.






18. 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.






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






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






21. Standard that addresses wireless MAN technologies.






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






23. A WAN protocol that works at the data link layer and performs packet switching. Economical choice because the fee is based on bandwidth usage rather than a dedicated pipeline.






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






25. 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.






26. 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






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






28. Used when a LAN device needs to communicate with WAN devices over telephone lines. Ensures the necessary electrical signaling and format are used. Interfaces with Data Terminal Equipment (DTE) and Data Circuit-Terminal Equipment (DCE).






29. 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.






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






31. 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.






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






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






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






35. Communication process that must deliver data with set time constraints. Applications are typically video related where audio and must match perfectly. VoIP is another example.






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






37. Uses tunneling protocols and encryption to provide a secure network connection between two network hosts. Private and secure connections can be made across an unsecured network. Example protocols are PPTP - L2TP - and IPSec.






38. Communication devices that are not synchronized - meaning all devices can send data at will - send a sequence of bits framed with a start and stop bit.






39. 4: Application - 3: Host-to-Host - 2: Internet - 1: Network Access - 3 -1 -1 -2 will map to the OSI model.






40. 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.






41. 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.






42. 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.






43. 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.






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






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






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






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






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






49. 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.






50. Type of network device that divides networks into more controllable segments to ensure more efficient use of bandwidth. Works at the data link layer and understands MAC addresses - not IP addresses.







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