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CCNP Wireless Security
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Subjects
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cisco
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it-skills
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ccnp
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. What is HREAP Local Auth limitation
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
100 local accounts max
x509 cert to establish DTLS capwap control tunnel. It can be either 1. LSC 2. MIC (Mafctr installed cert) or 3. SSC
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
2. What is Conditional Web Redirect
x509v3 certificate
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
3. Encryption algorithm used by Certificates
clients are load ballanced between them - this can not be configured otherwise.
1. NAC Guest Server (NGS) - Like a RADIUS server when people can create guest accounts 2. Nac Manager (NAM) - Centrilized server for creating policies & profiles that determine network access. 3. Network Access Server (NAS) - The device which control
Asymetric (public & Private key-pair)
on the WLC -1. Configure an Access vlan & check the quarentine vlan - giving it the quarentine vlan tag 2. on wired net connect the Quarenteen vlan to the untrusted NAS interface. 3. Connect the access vlan to the trusted int. on the nas 4. config sn
4. 3 modes of radius fallback
1. Min. RSSI 2. Roam Hysterisis - how much higher than current RSSI compared to neighbor ap RSSI before roaming request initiates 3. Scan Threshold - How low the current RSSI must be for the client to start scanning for a better ap 4. Transition Time
mfp-v2
1. Off (default) - moves down list and uses next server indefinately. 2. Passive -- Upon failure - server is marked as inactive for (300 seconds) then is put back in list and tried again (if its highest priority). 3. Active -- Actively probes failed
x509 cert to establish DTLS capwap control tunnel. It can be either 1. LSC 2. MIC (Mafctr installed cert) or 3. SSC
5. What does Proactive Key Caching do
Allows intel clients to request a neighbor list at will.
when you want some wlcs to be part of the same mobility group - but not others.
UDP 5246 & 5247
Sends the PMK to all WLCs that the client can roam to.
6. Things to Enable in ACS (Global Authentication Page) for PEAP support
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID
7. Why add an IPS if WLCs already detect attacks.
WLC can detect 802.11 attacks - but not other attacks from valid wireless clients.
1. Min. RSSI 2. Roam Hysterisis - how much higher than current RSSI compared to neighbor ap RSSI before roaming request initiates 3. Scan Threshold - How low the current RSSI must be for the client to start scanning for a better ap 4. Transition Time
802.11w
what occurs as a client roams to new ap -WLC forwards cached PMK to AP. Client then forms a Pairwise Transient Key (PTK) via 4-way handshake w/ ap.
8. Steps to setting up out-of-band virtual gateway setup on the NAS & NAM
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
what occurs as a client roams to new ap -WLC forwards cached PMK to AP. Client then forms a Pairwise Transient Key (PTK) via 4-way handshake w/ ap.
after authentication - the client & radius server cache session keys for a configurable amount of time
1. on NAS create an oob profile for the WLC 2. Create a new device in NAM - specifying the WLC mgmt ip 3. device mgmnt-->NAS & add the NAS ip as an oob virt. gateway 4. still on nams nas config page - enter the nas trusted int. ip & untrusted int vla
9. Steps to posture assesment
1. client begins in Quarenteen vlan & NAA sends posture assesment to NAS 2. assesment is verified against policies in NAM 3. If in compliance - client is moved to access vlan. If not - NAS sends remediation info to client 4 NAA guides user through re
checking allow aaa over-ride in the wlan-->advanced.
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
uses TLS to secure other eap methods like certs - user/pass - smart cards. Identifies itself to client with certificate. Utilizes: fast reconnect (faster roaming w/ key caching) and server authentication
10. Main elements of a NAC deployment
1. NAC Guest Server (NGS) - Like a RADIUS server when people can create guest accounts 2. Nac Manager (NAM) - Centrilized server for creating policies & profiles that determine network access. 3. Network Access Server (NAS) - The device which control
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
11. What is used for HREAP Roaming re: keying
1. HMAC-MD5 2. HMAC-SHA
peap-mschapv2 - eap-tls - mfp-v1 - nac
1. config mobility list to support anchor & foreign wlcs (using different mob. groups on ea. to keep auth. seperate between anchor & foreigns) 2. Map the guest wlan on foreign wlc to either mgmt int. or fake dynamic int. (ie dynamic int tied to a vla
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
12. RADIUS UDP Ports
specifies fast bss transitions by allowing negotiations and requests for wireless resources to occur simultaneously. Does this by allowing for part of the key to be cached (server key) among the network - so full 802.1x auth. isnt required
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
1812 - Authentication 1813 - Authorization
13. What does FIPS-2 require for WLC to RADIUS communications
EAP-FAST with anonymous pac provisioning
mititgate non-802.11 attacks
AES-Key Wrap
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
14. Peap fast reconnect
after authentication - the client & radius server cache session keys for a configurable amount of time
clients are load ballanced between them - this can not be configured otherwise.
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
15. Regulatory Compliance Acronyms
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
grouping WLCs or map areas - so Lobby ambassadors can create guest accounts only on certain wlcs
1. config mobility list to support anchor & foreign wlcs (using different mob. groups on ea. to keep auth. seperate between anchor & foreigns) 2. Map the guest wlan on foreign wlc to either mgmt int. or fake dynamic int. (ie dynamic int tied to a vla
Only when all the RADIUS servers defined globally are unreachable. (ie. even if not called out under WLAN-->AAA - the global RADIUS servers will be used instead of local profile)
16. What must be configd on ACS to enable dot1x from switch
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
EAP-FAST with anonymous pac provisioning
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
1. on NAS create an oob profile for the WLC 2. Create a new device in NAM - specifying the WLC mgmt ip 3. device mgmnt-->NAS & add the NAS ip as an oob virt. gateway 4. still on nams nas config page - enter the nas trusted int. ip & untrusted int vla
17. How does CCKM simplify PMK Caching
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
1. on NAS create an oob profile for the WLC 2. Create a new device in NAM - specifying the WLC mgmt ip 3. device mgmnt-->NAS & add the NAS ip as an oob virt. gateway 4. still on nams nas config page - enter the nas trusted int. ip & untrusted int vla
Clients send info re: previously associated aps to current ap - so it can use this information to inform current clients about neighboring aps. Requires CCXv2
1. PMK is only valid for 1 hour -- CCKM creates a main key & derives secondary keys. These secondary keys are sent to all wlc/aps.
18. Whats included in 802.11-2012
1. NAC Guest Server (NGS) - Like a RADIUS server when people can create guest accounts 2. Nac Manager (NAM) - Centrilized server for creating policies & profiles that determine network access. 3. Network Access Server (NAS) - The device which control
1. client begins in Quarenteen vlan & NAA sends posture assesment to NAS 2. assesment is verified against policies in NAM 3. If in compliance - client is moved to access vlan. If not - NAS sends remediation info to client 4 NAA guides user through re
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.
802.11i - 802.11r - 802.11w & 802.11n
19. What is the radius server override interface option under WLAN-->AAA?
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
specifies fast bss transitions by allowing negotiations and requests for wireless resources to occur simultaneously. Does this by allowing for part of the key to be cached (server key) among the network - so full 802.1x auth. isnt required
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
1. WLC must be defined as a VPN Conentrator - in the NAC config. 2. WLC must be configd to send RADIUS acct. to NAC
20. What is 802.11w?
MFP
1. Temporal Key for Unicast 2. Key Confirmation Key (KCK) - used for group handshakes 3. Key Encryption Key (KEK) - for encrypting the group encyrption key used to derive the braodcast/multicast keys.
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages
21. What kind of mgmt frames does client mfp protect
1. client -> authenticator: eapol_start 2. authenticator -> client: eap request/identity 3. client -> authenticator: eap response/identity 4. authenticator -> aaa: radius access request 5. aaa -> client: eap-tls handshake 6.aaa -> authenticator: radi
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages
x509v3 certificate
1. disassociation 2. deauthentication 3.QoS (WMM)
22. Vlan pooling
assigning multiple vlans to single wlan - and users are dynamically mapped to one of the vlans in round-robin
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
1812 - Authentication 1813 - Authorization
used with PEAP for user/password authentication
23. What is the IEEE Standards version of MFP
1. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
Nac Guest Server - used for provisioning guest accts - detailed usage reporting - delivery of creds via emai/sms -
802.11w
1. application type 2. security capabilities 3. QoS policy
24. Whats in CCXv4?
WLC sends a roam-request to a client when it can better serve that client on a different AP. Client can accept or ignore. CCXv4+
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
peap-mschapv2 - eap-tls - mfp-v1 - nac
puts the ap and client through tests to isolate connection issues. This disables the wlan while doing this. Can be used to diagnose .1x auth - .11 association etc. if using ccxv5
25. When will a WLC use a Local EAP profile?
1. Log into cert. server - from ACS -and click link to install it locally 2. Log into ACS and install cert into local store 3. DL cert chain from CA to ACS store 4. Tell ACS to use that cert from its store 5. restart ACS 6. log back into ACS and inst
1. application type 2. security capabilities 3. QoS policy
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
Only when all the RADIUS servers defined globally are unreachable. (ie. even if not called out under WLAN-->AAA - the global RADIUS servers will be used instead of local profile)
26. Is data encrypted over a capwap tunnel?
MFP
US: 1. HIPAA 2. GLBA 3. FFIEC 4. SOX 5. FIPS 6. NIAP Canada: 1. PIPEDA Japan: 1. JPIPA
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.
Controll is (mgmnt) not data. To encrypt data: check data encryption under advanced tab of ap config
27. Steps to roaming in non802.1R
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
1. Scanning - for other aps in the area 2. exchanging 802.11 auth messages (first from client then from ap) w/ the target ap 3. exchanging re-association messages with target ap 4. dot1x master key (PMK) negotiation 5. key derivation - 4way handshake
UDP 5246 & 5247
1. Captive Portal 2. NAA (agent installed on windows); auth twice (1 to radius 2 to nac) 3. NAA w/ SSO - user authss once. & wlc auths to nac on their behalf.
28. What kind of local 802.1x auth. does HREAP support
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
dot1x system-auth-control - aaa new-model - aaa authentication dot1x default group radius - radius serve host 10.1.1.2 auth-port 1812 acct port 1813 key <key>
-150ms
1. LEAP 2. EAP-FAST
29. How long before an HREAP goes into disconnected/standalone mode
when you want some wlcs to be part of the same mobility group - but not others.
Sends RADIUS packets from a dynamic interface instead of the WLC Mgmt interface address
1. Wireless-->AP Global Config-->enable dot1x w/ user/pass 2. Config the switch port to enable auth. to ACS/RADIUS
300ms
30. Enhanced Neighbor list
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
1. LEAP 2. EAP-FAST
mping = tests intercontroller control traffic. eping = tests intercontroller data traffic (EoIP)
checking allow aaa over-ride in the wlan-->advanced.
31. Why is fast secure roaming used
based on auth. group -1. vlan 2. qos 3. acl 4. tunnel attributes
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
used with PEAP for user/password authentication
WLCs create a deriviative of the PMK - called Opportunistic Key Caching (OPC) for fast-roaming among HREAPs in the same HREAP group.
32. What is needed to use Locally Significat Certificates (LSC) when establishing tunnel from OEAP to WLC
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages
PKI
MFP
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
33. Will foreign/anchor communication work through PAT?
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
1. client begins in Quarenteen vlan & NAA sends posture assesment to NAS 2. assesment is verified against policies in NAM 3. If in compliance - client is moved to access vlan. If not - NAS sends remediation info to client 4 NAA guides user through re
no
what occurs as a client roams to new ap -WLC forwards cached PMK to AP. Client then forms a Pairwise Transient Key (PTK) via 4-way handshake w/ ap.
34. Briefly describe eap-tls
1. Interfac Configuration --> RADIUS (IETF) --> check 64 (Tunnel Type) - 65 (Tunnel Medium Type) - 81 (Tunnel Private-group-id) 2. Navigate to Group Setup and enable the checkboxes for the previous attributes - where 64=VLAN - 65=802 - 81=<Vlan_tag>
enables Identity Based Netowrking (IBN) where wlan settings are changed per-user (qos - vlan - acls - or timeouts)
1. LEAP 2. EAP-FAST
uses certificates
35. Briefly describe eap-mschapv2
300ms
used with PEAP for user/password authentication
802.11w
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
36. Enhanced Neighbor list - E2E
Only when all the RADIUS servers defined globally are unreachable. (ie. even if not called out under WLAN-->AAA - the global RADIUS servers will be used instead of local profile)
HTTPS
Allows intel clients to request a neighbor list at will.
1. Guest User 2. Sponsor 3. Network Enforcement Device (ie wlc) 4. NGS Server itself
37. When submitting a CSR from ACS
what must you ensure -1.Exportable 2.Server Auth Cert 3.Store cert in local cert store
WLC generates a Message Integrity Check Information Element (MIC IE) - which includes a sequence # - and aps add it to each mgmt frame. Clients ignore this IE - as they do not understand it.
Inter Access Point Protocol uses UDP between aps to exchange information about new aps (announce) in the area and handoffs that have occurred when client roams
Sends the PMK to all WLCs that the client can roam to.
38. Reason why you can NOT use WLC RADIUS server to auth. against OpenLDAP or Win-2003 (or later)
1. Interfac Configuration --> RADIUS (IETF) --> check 64 (Tunnel Type) - 65 (Tunnel Medium Type) - 81 (Tunnel Private-group-id) 2. Navigate to Group Setup and enable the checkboxes for the previous attributes - where 64=VLAN - 65=802 - 81=<Vlan_tag>
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
WLC RADIUS server only works if passwords are sent in Clear-text from LDAP.
1. v2 - LEAP 2. v3 - EAP-FAST 3. v4 - PEAP & EAP-TLS
39. What is included in a Pairwise Transient Key (PTK)
1. Temporal Key for Unicast 2. Key Confirmation Key (KCK) - used for group handshakes 3. Key Encryption Key (KEK) - for encrypting the group encyrption key used to derive the braodcast/multicast keys.
mititgate non-802.11 attacks
RSN Tag. Auth Key mgmt will show PSK - or WPA (for 802.1x) Stands for Robust Security Network
It handles .1x & NAC auth. with Single Sign on. WLC forwards RADIUS accounting messages (of EAPOL Success) to the NAC upon login - authing the client to nac - & then it goes through posturing
40. 6 criteria types for rogue classification
1. Log into cert. server - from ACS -and click link to install it locally 2. Log into ACS and install cert into local store 3. DL cert chain from CA to ACS store 4. Tell ACS to use that cert from its store 5. restart ACS 6. log back into ACS and inst
DTLS (Datagram Transport Layer Security)
when you want some wlcs to be part of the same mobility group - but not others.
1. RSSI 2. Duration 3. Client Count 4. No encryption 5. Managed SSID (ie UNLV) 6. SSID
41. What triggers can initiate a WLC to request a client to roam
1. Integrated -- wIPS monitor mode aps are part of client-serving infrastructure 2. Overlay -- wIPS aps - WCS & WLCs are totally seperate
Clients send info re: previously associated aps to current ap - so it can use this information to inform current clients about neighboring aps. Requires CCXv2
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
1. Min. RSSI 2. Roam Hysterisis - how much higher than current RSSI compared to neighbor ap RSSI before roaming request initiates 3. Scan Threshold - How low the current RSSI must be for the client to start scanning for a better ap 4. Transition Time
42. How to add IPS TLS info to WLC
Security --> Advanced --> CIDS --> Sensors
1. Min. RSSI 2. Roam Hysterisis - how much higher than current RSSI compared to neighbor ap RSSI before roaming request initiates 3. Scan Threshold - How low the current RSSI must be for the client to start scanning for a better ap 4. Transition Time
MFP
ACL - or Interface-name configured in ACS -1. Interface Configuration --> RADIUS (Cisco Airspace) and check off: Air-Qos-Level - Aire-DSCP - Aire-802.1p tag - Aire-Interface-name - Air-ACL-Name
43. What is Ciscos gold confidence level deployment of wIPS aps in a walled environment
Allows intel clients to request a neighbor list at will.
HTTPS
802.11i - 802.11r - 802.11w & 802.11n
1 AP per 15 -000 sq. feet.
44. How fast is fast secure roaming
Only when all the RADIUS servers defined globally are unreachable. (ie. even if not called out under WLAN-->AAA - the global RADIUS servers will be used instead of local profile)
Does not require re-authentication when a client roams - in an 802.1x/WPA2 environment
-150ms
same as steps to roaming in non-802.1R except: skips PMK negotiation & piggybacks PTK & QoS with the 802.11 authentication & association messages
45. Protocols used in wIPS
1812 - Authentication 1813 - Authorization
300ms
1. Temporal Key for Unicast 2. Key Confirmation Key (KCK) - used for group handshakes 3. Key Encryption Key (KEK) - for encrypting the group encyrption key used to derive the braodcast/multicast keys.
1. CAPWAP 2. NMSP (network mobility services) 3. SNMP 4. SOAP/XML
46. 3 categories of segmented traffic
Asymetric (public & Private key-pair)
mititgate non-802.11 attacks
after .1x authentication user is forwarded to a splash page. This is done via RADIUS attribute
1. application type 2. security capabilities 3. QoS policy
47. Ports to open on fw to allow foreign to anchor controller tunnel to be built
1. udp 16666 for control traffic 2. IP Protocol 97 (EoIP) for client data traffic
mfp-v2
Sends the PMK to all WLCs that the client can roam to.
1. Allow EAP-MSCHAPv2 2. Allow EAP-GTC 3. Check Posture Validation when doing NAC
48. Switch global config to enable dot1x radius server
1. Captive Portal 2. NAA (agent installed on windows); auth twice (1 to radius 2 to nac) 3. NAA w/ SSO - user authss once. & wlc auths to nac on their behalf.
1. VLAN Mapping 2. WLAN Ordering 3. WLAN Configuration
dot1x system-auth-control - aaa new-model - aaa authentication dot1x default group radius - radius serve host 10.1.1.2 auth-port 1812 acct port 1813 key <key>
x509 cert to establish DTLS capwap control tunnel. It can be either 1. LSC 2. MIC (Mafctr installed cert) or 3. SSC
49. Steps to configure wlcs for guest wlan
1. PMK is only valid for 1 hour -- CCKM creates a main key & derives secondary keys. These secondary keys are sent to all wlc/aps.
1. config mobility list to support anchor & foreign wlcs (using different mob. groups on ea. to keep auth. seperate between anchor & foreigns) 2. Map the guest wlan on foreign wlc to either mgmt int. or fake dynamic int. (ie dynamic int tied to a vla
1. disassociation 2. deauthentication 3.QoS (WMM)
MFP-1 protects infrastructure from management frame attacks (ie aps only). MFP-2 Protects both infrastructure & clients
50. Steps to auth with NAA w/ SSO
WLC can detect 802.11 attacks - but not other attacks from valid wireless clients.
is provided to clients as they associate - including neighbor ap info like channel - rssi etc.
dot1x system-auth-control - aaa new-model - aaa authentication dot1x default group radius - radius serve host 10.1.1.2 auth-port 1812 acct port 1813 key <key>
1. User performs .1x with RADIUS 2. WLC forwards radius accounting start to NAM (along with clients IP) 3. clients NAA detects network con. & tries to connect to NAM. 4. NAS Intercepts step 3 & contacts NAM itself to see if client is in the online li
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