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. Bbenign activity reported as malicious






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






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






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






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






6. 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






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






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






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






10. Twisted pair cable with speed capability of 10Mbps






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






12. 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






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






14. 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






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






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






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






18. Amplifies the signal of incoming packets before broadcasting them to the network






19. Dynamic / private ports






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






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






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






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






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






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






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






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






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






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






30. 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






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






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






33. A variation of a smurf attack using UDP






34. Twisted pair cable with speed capability of 1Gbps






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






36. Collection on honeypots






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






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






39. Firewall that intercepts and inspects messages before delivering them - placed between trusted and untrusted networks - degrade network traffic - also know as application gateway






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






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






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






43. Attempt to block service or reduce activity by overloading the victim machine with ping requests






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






45. 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






46. A set of rules computers use to communicate with each other across a network






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






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






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






50. Firewall with several NICs connected to different networks