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 to pass data from one VLAN to another






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






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






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






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






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






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






8. Level 2 firewall often used to filter web traffic






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






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






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






12. Firewall with several NICs connected to different networks






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






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






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






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






17. Session hijacking countermeasure






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






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






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






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






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






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






24. 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






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






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






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






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






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






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






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






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






34. Twisted pair cable with speed capability of 10Mbps






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






36. 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






37. 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






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






39. 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






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






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






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






43. Bbenign activity reported as malicious






44. 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






45. IDS response method using logging and notification






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






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






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






49. Dynamic / private ports






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