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






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






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






5. 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






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






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






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






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






10. 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






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






12. Session hijacking countermeasure






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






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






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






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






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






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






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






20. Collection on honeypots






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






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






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






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






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






26. Head of a packet contains...






27. Ping flooding - ping of death - smurf - fraggle - SYN flood - land - teardrop - email flood






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






29. Malicious activity not reported or detected






30. Used to pass data from one VLAN to another






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






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






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






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






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






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






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






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






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






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






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






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






44. 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






45. IDS response method using logging and notification






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






47. 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






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






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






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