Test your basic knowledge |

Comptia Security +: 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. A server that sits between an intranet and it's Internet connection - masking all IP addresses






2. Dynamic / private ports






3. Monitors network traffic to identify possible attacks






4. Cable designed for transmission at higher speeds (100Mbps - 2Gbps) and longer distances (2km) - expensive -eliminates signal tapping






5. Packet filtering - proxies - stateful inspection






6. User / registered ports






7. A flaw in TCP/IP to verify that a packet really comes from the addess indicated in the IP header leads to this attack






8. Capture and analyze network traffic - also known as packet analyzer - sniffer - network analyzer






9. A ping message is broadcast to an entire network with a spoofed source IP addess of the victim computer - flooding the victim computer with responses during this attack






10. Forging an IP address with the address of a trusted host






11. IDS that relies on usage patterns and baseline operation - can ID new vulnerability - high rate of false alarms






12. An application layer gateway works at this layer of the OSI model






13. An attack where fragmented UDP packets with odd offset values are sent to the victim - when the OS attempts to rebuild the fragments they overwrite each other and cause confusion






14. A complete transfer of all DNS zone information from one server to another






15. A feature of firewalls / routers that disguise the IP address of internal systems allowing connection to the Internet using one public address






16. IP spoofing attack where the attacker can only send packets and has to guess about replies






17. A logical connection point allowing computers and software to communicate and exchange data






18. A packet filtering firewall works at this layer of the OSI model






19. DMZ implementation using two firewalls with different rule sets for the DMZ and intranet






20. Web servers - FTP servers - DNS servers - mail servers should be located on the _____________






21. A pool of public IP addresses is shared by a collection of private IP addresses






22. Allows all traffic except traffic that is specifically denied - also known as permissive access






23. An attacker redirects valid request to malicious sites by feeding a DNS server altered records which are retained in its cache






24. Most common DMZ implementation using three firewall interfaces (internet - intranet - DMZ)






25. Level 1 firewall that looks at the head of a packet - (not content) - operates rapidly - application independent - either allow or deny packets






26. A sniffer mode used to capture traffic addressed to/from another machine on the network






27. Attack where an attacker intercepts traffic and tricks parties at either end into believing they are communicating with each other






28. Two authoritative sources for your domain namespace with differing contents depending on whether the query is internal or external






29. IDS that relies on the identification of known attack signatures






30. Session hijacking countermeasure






31. Head of a packet contains...






32. Creating a illegitimate website with the intention of convincing victims that they are visiting a legitimate site - typically to collect confidential information






33. Used by ISPs - single public network IP address is shared among many hosts on a private network - also known as PAT






34. Used to pass data from one VLAN to another






35. Connects two or more subnets - determines the best path to forward packets based on packet header and forwarding table information






36. An attack where an attacker captures sensitive information and sends it again later in an attempt to replicate the transaction






37. Generate random TCP sequence numbers and encrypt traffic countermeasure what attacks






38. An attacker redirects traffic by falsifying the IP address requested by ARP request






39. A decoy system - intentionally left exposed to attract/distract attackers - logs and monitors attacker activities






40. Examines content passing through and makes a decision on the data based on a set of criteria - normal uses email filtering and web browsing






41. Unauthenticated connections - creating the potential for a successful connection as an anonymous user






42. When a hacker takes over a TCP session between two machines - also known as session hijacking - foiled by the use of encrypted sessions






43. Bastion host - dual homed firewall - multi homed firewall - screened host - screened subnet






44. Well known ports - allow administrative access - used for network services - considered only ports allowed to transmit traffic thru a firewall






45. Cable used most in networks - maximum speed 1Gbps - maximum length 100 meters - susceptible to tap






46. Acts as an organizations internal phone system






47. A physical or logical subnetwork that houses systems accessible to a larger untrusted network - usually the Internet - also known as DMZ






48. Twisted pair cable with speed capability of 1Gbps






49. IP spoofing attack where the attacker can monitor packets and participate in bidirectional communication






50. Promiscuous NIC to sniff passing traffic - admin NIC to send alerts to centralized management system