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 group of hosts on logical network segment that communicate as if they were attached to the same broadcast domain - regardless of their physical location






2. IDS response method using logging and notification






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






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






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






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






8. Twisted pair cable with speed capability of 10Mbps






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






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






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






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






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






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






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






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






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






18. A variation of a smurf attack using UDP






19. Monitors network traffic to identify possible attacks






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






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. Forging an IP address with the address of a trusted host






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






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






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






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






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






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






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






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






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






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






33. 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






34. 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






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






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






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






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






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






40. Collection on honeypots






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






42. 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






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






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






45. Packet filtering - proxies - stateful inspection






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






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






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






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






50. IDS that relies on the identification of known attack signatures