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






2. Works like a private line for a customer with an agreed upon bandwidth. Path is programmed into the WAN devices.






3. 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.






4. 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.






5. SMTP server that is configured for sending email from any source to and destination.






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






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






8. 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.






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






10. Type of LAN and MAN technology - usually used for backbones - that uses token-passing technology and has redundant rings in case the primary ring goes down.






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. 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.






13. 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.






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






15. 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.






16. 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.






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






18. 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.






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






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






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






22. 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).






23. 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.






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






25. 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).






26. 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.






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






28. 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.






29. Malware attack that sends commands inside of an ICMP packet.






30. 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.






31. 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.






32. Wireless LAN standard. Variations include 802.11a - b - f - g - and i. Commonly accepts are 802.11b and g.






33. Blue tooth vulnerability where an attacker sends messages to a receiver that is in discovery mode.






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






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






36. 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.






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






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






39. 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.






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






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






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






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






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






45. Protocol that is reliable and connection-oriented - which means it ensures delivery through acknowledgements - sequencing - detection and correction.






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






47. Spam over IM






48. Security wireless standard that enables data transfers to be encrypted. Static encryption keys among clients - short 40 bit keys - RC4 encryption - ineffective use of 24 bit IV's - and no packet integrity.






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






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