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. Session hijacking countermeasure






2. 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






3. 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






4. Acts as an organizations internal phone system






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






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






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






8. Known as thinnet - 10mbps - limited to 185 meters






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






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






11. 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






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






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






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






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






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






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






18. Dynamic / private ports






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






20. A variation of a smurf attack using UDP






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






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






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






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






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






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






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






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






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






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






31. 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






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






33. Firewall with several NICs connected to different networks






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






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






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






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






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






39. Level 2 firewall often used to filter web traffic






40. 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






41. 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






42. An application layer gateway works at this layer of the OSI model






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






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






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






46. Used to pass data from one VLAN to another






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






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






49. Collection on honeypots






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