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






2. Connects devices together to form a subnet - broadcasts incoming packets to all devices






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






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






5. Level 2 firewall often used to filter web traffic






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






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






8. 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






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






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






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






12. Monitors network traffic to identify possible attacks






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






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






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






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






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






18. Bbenign activity reported as malicious






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






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






21. 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






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






23. 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






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






25. IDS response method using logging and notification






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






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






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






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






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






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






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






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






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






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






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






37. Firewall with several NICs connected to different networks






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






39. Head of a packet contains...






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






41. Malicious activity not reported or detected






42. Collection on honeypots






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






44. Packet filtering - proxies - stateful inspection






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






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






47. 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






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






49. Used to pass data from one VLAN to another






50. Allows all traffic except traffic that is specifically denied - also known as permissive access