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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. Identifys a WLAN. Can be used to segment environments into different WLANS.






2. Standard that addresses wireless MAN technologies.






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






4. 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.






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






6. 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.






7. 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.






8. Type of firewall that is also know as a screening router and is accomplished by ACL's (Lines of text called rules). Traffic can be filtered by address - ports - and protocol types. 1st generation firewall - runs at the network layer.






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






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






11. 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.






12. 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.






13. Wireless standard that will improve security of wireless communication






14. 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.






15. 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.






16. Proprietary protocol that enables secondary devices to communicate with primary stations or mainframes in an IBM architecture. Developed in the mid-70's for use in a systems network architecture (SNA) environment. First synchronous - link layer - bit






17. A Temporary circuit set up for a single connection. Set up and torn down as they are needed.






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






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






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






21. Type of wireless authentication where the device does not need to provide a key for authentication. Usually - only the SSID is required and plaintext transmission occurs.






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






23. 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.






24. Provides high-speed access - up to 50 Mbps - to the Internet through existing cable coaxial and fiber lines. Major security concern is the fact that neighbors use the same coaxial network and can monitor each others traffic.






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






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






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






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






29. Type of switch that uses tags that are assigned to each destination network. The network compares the tag with its tag information base - appends the appropriate tag - and forwards to the next switch. This increases the transmission speed - allows la






30. Encapsulation protocol for telecommunication connections. Replaced SLIP and is ideal for connection different types of devices over serial lines.






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






32. 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).






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






34. 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






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






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






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






38. 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.






39. Protocol that addresses vulnerabilities found in PAP. Uses challenge/response mechanism to authenticate the user instead of sending password.






40. 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.






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






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






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






44. 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.






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






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






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






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






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






50. 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.