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Test your basic knowledge |
Comptia Security +: Network Security
Start Test
Study First
Subjects
:
certifications
,
comptia-security-+
,
it-skills
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. When a hacker takes over a TCP session between two machines - also known as session hijacking - foiled by the use of encrypted sessions
screened subnet
session hijacking
dual homed
tcp/ip hijacking
2. Level 1 firewall that looks at the head of a packet - (not content) - operates rapidly - application independent - either allow or deny packets
packet filter
protocol
dynamic NAT
honeynet
3. Level 2 firewall often used to filter web traffic
0 - 1023
tcp/ip hijacking
risk mitigation
proxy
4. Known as thicknet - 10mbps - limited to 500 meters
content filter
10Base5
0 - 1023
behavior based
5. Man in the middle attack where the attacker captures the traffic and sends it to the original recipient without altering the intercepted data
passive
NIDS
active
tcp/ip hijacking
6. IDS that relies on usage patterns and baseline operation - can ID new vulnerability - high rate of false alarms
PBX (Private Branch Exchange)
fraggle
passive
behavior based
7. A locked down/hardened host on the public side of the firewall highly exposed to attacks (i.e. web server - email server)
port
private
bastion host
1024 - 49 -151
8. Firewall with two NICs - one internal and one external facing - NAT is often used with this firewall
proxy server
application
protocol analyzer
dual homed
9. 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
ARP
smurf
DMZ
stateful inspection
10. An attack where an attacker captures sensitive information and sends it again later in an attempt to replicate the transaction
port
replay
DMZ
tcp/ip hijacking
11. Amplifies the signal of incoming packets before broadcasting them to the network
router
smurf
spoofing attacks
repeater
12. A flaw in TCP/IP to verify that a packet really comes from the addess indicated in the IP header leads to this attack
man in the middle
null session
false positive
IP spoofing
13. 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
store and forward
switch
cat3
application
14. Packet filtering - proxies - stateful inspection
layered
firewalls
stateful inspection
fiber optic
15. Dynamic / private ports
split horizon DNS
twisted pair
49 -152 - 65 -535
spoofing
16. Firewall with several NICs connected to different networks
dynamic NAT
screened subnet
multi homed
NIDS
17. A server that sits between an intranet and it's Internet connection - masking all IP addresses
proxy server
deny by default
content filter
NAT
18. 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
NIDS
screened host
session hijacking
honeypot
19. 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
null session
broadcast domain
switch
layered
20. IP spoofing attack where the attacker can only send packets and has to guess about replies
proxy
spoofing attacks
DoS attacks
blind
21. Network configuration that permits selected outsiders access internal information systems
extranet
port address translation
ARP poisoning
dynamic NAT
22. Cable used most in networks - maximum speed 1Gbps - maximum length 100 meters - susceptible to tap
deny by default
twisted pair
SYN flood
VLAN
23. One device per network segment - does not use local system resources - can't examine encrypted traffic - OS independent - less expensive
promiscuous
NIDS
passive
49 -152 - 65 -535
24. Allows all traffic except traffic that is specifically denied - also known as permissive access
layered
man in the middle
passive
allow by default
25. Firewall that intercepts and inspects messages before delivering them - placed between trusted and untrusted networks - degrade network traffic - also know as application gateway
tcp/ip hijacking
deny by default
website spoofing
proxy
26. A decoy system - intentionally left exposed to attract/distract attackers - logs and monitors attacker activities
active
ping flooding
honeypot
fraggle
27. A DoS attack that subverts the normal "three way handshake" of TCP/IP by sending SYN packets - but no corresponding ACK packets
dynamic NAT
deny by default
SYN flood
ARP poisoning
28. A pool of public IP addresses is shared by a collection of private IP addresses
null session
dynamic NAT
man in the middle
multiple interface firewall
29. An application layer gateway works at this layer of the OSI model
zone transfer
application
HIDS
deny by default
30. Bbenign activity reported as malicious
false positive
bastion host
proxy
passive
31. A person or program masquerades as another by presenting false information to gain an illegitimate advantage
fraggle
active
spoofing
49 -152 - 65 -535
32. IDS that relies on the identification of known attack signatures
false negative
knowledge based
NIDS
land attack
33. A physical or logical subnetwork that houses systems accessible to a larger untrusted network - usually the Internet - also known as DMZ
ARP poisoning
SYN flood
screened subnet
NIDS
34. A logical connection point allowing computers and software to communicate and exchange data
session hijacking
land attack
port
network
35. A packet filtering firewall works at this layer of the OSI model
subnet
firewalls
network
smurf
36. Known as thinnet - 10mbps - limited to 185 meters
NIPS
tcp/ip hijacking
10base2
bastion host
37. IP spoofing attack where the attacker can monitor packets and participate in bidirectional communication
informed
protocol
static NAT
encrypt session key
38. Blocks all traffic from passing through the firewall except for traffic that is explicitly allowed - also known as restrictive access - best practice
deny by default
screened host
man in the middle
store and forward
39. Monitors network traffic to identify possible attacks
NIDS
active
port
firewalls
40. IDS response method using logging and notification
passive
broadcast domain
49 -152 - 65 -535
port address translation
41. Unauthenticated connections - creating the potential for a successful connection as an anonymous user
null session
NAT
layered
stateful inspection
42. Type of IP addresses not routed on the internet: 10.x.x.x - 172.16.x.x - 192.168.x.x
router
promiscuous
honeypot
private
43. Connects two or more subnets - determines the best path to forward packets based on packet header and forwarding table information
man in the middle
router
honeypot
cat3
44. Malicious insiders - connections that bypass the firewall (i.e. IM) - encrypted traffic/tunneling - social engineering - physical access are missed by ___________
firewalls
screened subnet
packet filter
NIDS network connections
45. Variation of the SYN flood where SYN packets are spoofed to have the same source and destination IP address and port
VLAN
10base2
land attack
fraggle
46. Web servers - FTP servers - DNS servers - mail servers should be located on the _____________
packet filter
allow by default
DMZ
spoofing attacks
47. A logical group of computers connected via a switch/hub that share the same network prefix in their IP address
proxy server
subnet
protocol
DoS attacks
48. An attacker redirects valid request to malicious sites by feeding a DNS server altered records which are retained in its cache
session hijacking
DNS spoofing
dynamic NAT
0 - 1023
49. Session hijacking countermeasure
encrypt session key
firewalls
proxy
port address translation
50. Multiple network defense components are placed throughout the organizations assets and the network is properly segmented
subnet
defense in depth
teardrop
DoS attacks