Test your basic knowledge |

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. Type of network device that allows different network segments and/or systems to communicate. When communication takes place - a dedicated connection is set up - so collision and broadcast data is not available to other devices. Combined repeater (hub






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






3. Wireless standard that will improve security of wireless communication






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






5. 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.






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






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






8. 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.






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






10. 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.






11. 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.






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






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






14. 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.






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






16. 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.






17. 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






18. 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.






19. 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.






20. 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.






21. 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






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






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






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






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






26. 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.






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






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






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






30. 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.






31. 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.






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






33. Spam over IM






34. Protocol that resolves host names into IP addresses and has distributed databases all over the Internet to provide name resolution.






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






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






37. 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).






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






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






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






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






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






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






44. 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






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






46. 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.






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






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






49. 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.






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.