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






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






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






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






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






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






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






8. 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






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






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






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






12. Collection on honeypots






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






14. A ping message is broadcast to an entire network with a spoofed source IP addess of the victim computer - flooding the victim computer with responses during this attack






15. Monitors network traffic to identify possible attacks






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






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






18. Used to pass data from one VLAN to another






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






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






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






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






23. Malicious activity not reported or detected






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






25. 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






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






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






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






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






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






31. A variation of a smurf attack using UDP






32. Session hijacking countermeasure






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






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






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






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






37. 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






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






39. Packets with a forged source IP address - purpose to conceal the identity of the sender or impersonate another computing system






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






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






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






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






44. Dynamic / private ports






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






46. Bbenign activity reported as malicious






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






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






49. Head of a packet contains...






50. 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