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. Seeks to reduce the probability and/or impact of a specific risk below an acceptable threshold






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






3. Firewall that communicates directly with a perimeter router and the internal network - 2 NICs - screens internal traffic






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






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






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






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






8. Firewall with several NICs connected to different networks






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






10. Known as thinnet - 10mbps - limited to 185 meters






11. A method - used by switches and email servers - of delivering messages which are temporarily held by an intermediary before being sent to their final destination






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






13. Head of a packet contains...






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






15. Examines a entire packet and determines action based on a complex set of rules






16. Firewall with two NICs - one internal and one external facing - NAT is often used with this firewall






17. A server that sits between an intranet and it's Internet connection - masking all IP addresses






18. Network configuration that permits selected outsiders access internal information systems






19. A DoS attack that subverts the normal "three way handshake" of TCP/IP by sending SYN packets - but no corresponding ACK packets






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






21. Level 2 firewall often used to filter web traffic






22. Protocol used to map an known IP address to its corresponding media access control (MAC) address






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






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






25. Malicious insiders - connections that bypass the firewall (i.e. IM) - encrypted traffic/tunneling - social engineering - physical access are missed by ___________






26. Session hijacking countermeasure






27. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)






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






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






30. A logical division of a computer network - in which all nodes can reach each other by broadcast at the data link layer - equivalent to a VLAN






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






32. IPS response method - terminate process/session - block/reject and redirect network traffic






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






34. Variation of the SYN flood where SYN packets are spoofed to have the same source and destination IP address and port






35. Twisted pair cable with speed capability of 1Gbps






36. Man in the middle attack where the attacker captures the traffic and sends it to the original recipient without altering the intercepted data






37. A level 3 firewall that remembers / tracks network connections - maintains a state table - distinguish which side of a firewall a connection was initiated - higher security






38. Man in the middle attack where the content of an intercepted message is altered before it is sent on






39. One device per network segment - does not use local system resources - can't examine encrypted traffic - OS independent - less expensive






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






41. Packet filtering - proxies - stateful inspection






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






43. IP - email - website - DNS - and ARP






44. Connects devices together to form a subnet - packet forwarding is based on MAC addresses - works at the data link layer of the OSI






45. Crashing a computer by sending oversized packets (over 64 bytes) that it doesn't know how to handle






46. One private IP address is mapped to one public IP address






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






48. Unauthenticated Windows session where an attacker can gather list of users - groups - machines - shares - user and host SID






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






50. Evolved from IDS - monitors network traffic - detects and responds to attack on network