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






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






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






4. Take control of a session between a server and client - the users gets kicked off the session while the attacker inserts himself into the session by sending a reset request to the client






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






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






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






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






9. Multiple network defense components are placed throughout the organizations assets and the network is properly segmented






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






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






12. A firewall that checks all layers of a packet including content - verifying an expected response to a current communication session - also call a deep packet inspection






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






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






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






16. Acts as an organizations internal phone system






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






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






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






20. 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






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






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






23. Packet filtering - proxies - stateful inspection






24. Known as thicknet - 10mbps - limited to 500 meters






25. Twisted pair cable with speed capability of 1Gbps






26. Malicious activity not reported or detected






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






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






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






30. IDS response method using logging and notification






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






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






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






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






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






36. Bbenign activity reported as malicious






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






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






39. Used to pass data from one VLAN to another






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






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






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






43. Dynamic / private ports






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






45. 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






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






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






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






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






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