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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 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.






2. 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.






3. 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






4. Type of cable that carries data as light waves - expensive - can transmit data at high speeds - difficult to tap into - and is resistant to EMI. Most secure cabling option - but vulnerable to dispersion.






5. OSI layer that provides routing - addressing - and fragmentation of packets. This layer can determine alternative routes to avoid network congestion. Protocols that use this layer are IP - ICMP - RIP - OSPF (Open Shortest Path First) - BGP (Border Ga






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






7. 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.






8. Faster because processing is done in the kernel. One network stack is created for each packet. 5th generation firewall - runs at the application layer.






9. 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.






10. Wireless standard that will improve security of wireless communication






11. 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.






12. 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.






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






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






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






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






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






18. 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.






19. 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.






20. 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.






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






22. Strengths of a type of Stateful Firewall: High security - better performance than an application firewall. Weaknesses include more complex - ___________ - if rebooted all information is lost.






23. 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






24. 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.






25. 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.






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






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






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






29. Type of authentication protocol that provides a framework to enable may types of authentication techniques to be used during PPP connections. It extends the possibilities to one-time passwords - token cards - biometrics - Kerberos - and digital certi






30. An older protocol that was used by ISP's to encapsulate data to be sent over dial up connections






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






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






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






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






35. 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.






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






37. Problems: Requires more expense in cabling and extra effort to track down cable faults.






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






39. 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.






40. Type of firewall that looks at header information to make decisions on whether a packet is deemed acceptable. This type does not look as deep within the packet as an application level proxy - runs at the session layer.






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






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






43. Type of topology where computers all are connected to each other - which provides redundancy.






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






45. 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.






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






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






48. Network where a dedicated virtual link is not set up - and packets can use many different dynamic paths to get to the same destination. This causes variable delays. Examples are frame relay and X.25






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






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







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