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






2. Type of IP addresses not routed on the internet: 10.x.x.x - 172.16.x.x - 192.168.x.x






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






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






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






6. Dynamic / private ports






7. User / registered ports






8. IDS response method using logging and notification






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






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






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






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






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






14. A person or program masquerades as another by presenting false information to gain an illegitimate advantage






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






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






17. 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






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






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






20. Blocks all traffic from passing through the firewall except for traffic that is explicitly allowed - also known as restrictive access - best practice






21. Packet filtering - proxies - stateful inspection






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






23. Head of a packet contains...






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






25. One process on every system - use local system resources - detect attacks that NIDS misses - examine data after decrypted - can be OS specific - more expensive






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






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






28. Collection on honeypots






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






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






31. A logical group of computers connected via a switch/hub that share the same network prefix in their IP address






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






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






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






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






36. Cable with copper core - has no physical transmission security and is easy to tap - 10mbps - maximum length 500 meters






37. A group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






38. Connects devices together to form a subnet - broadcasts incoming packets to all devices






39. 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






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






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






42. Twisted pair cable with speed capability of 1Gbps






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






44. Level 2 firewall often used to filter web traffic






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






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






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






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






49. Used to pass data from one VLAN to another






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