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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. 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.






2. Application layer request/response protocol widely used for VoIP communication sessions. Transported by UDP - makes use of TCP - and is vulnerable to sniffing attacks.






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. 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.






5. Spam over IM






6. 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.






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






8. 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.






9. 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).






10. As they travel down the OSI model on the source computer - each layer adds its own information so the corresponding layer on the destination machine knows how to process the data.






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






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






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






14. Type of topology that where all computers are connected to a central device (AKA hub) - which provides more resilience for the network.






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






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






17. Set of rules that dictates how computer communicate over networks.






18. Protocol that works at the network layer and informs hosts - routers - and devices of network or computer problems. It is the major component of the ping utility.






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






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






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






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






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






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






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






26. 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.






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






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






29. 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.






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






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






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






33. 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.






34. Protocol where all computers compete for the shard network cable - listen to learn when they can transmit data - susceptible to data collisions. Used by Ethernet.






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






36. 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.






37. Type of wireless authentication where a shared WEP key is used to encrypt a nonce for authentication.






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






39. 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.






40. Protocol for allowing multi-cast (one to many) communication






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






42. 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.






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






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






45. 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.






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






47. 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.






48. 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






49. 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






50. Type of cable where STP and UTP (shielded and unshielded) cables are the most popular - cheapest - and easiest to work with. However - easiest to tap into - have cross talk issues - and are vulnerable to electromagnetic interference (EMI).