Exam 171-180

Question 1

Tenants access multiple wireless networks in a building. Users report intermittent connectivity. Which of the following is
the MOST likely cause of the problem?

A. The channels are overlapping with other wireless networks and should be changed.
B. The SSIDs are incompatible and should be renamed.
C. The users have incompatible wireless network cards and should upgrade.
D. The default idle period for logoff is too short and should be changed to a longer limit.

Answer 1

A. The channels are overlapping with other wireless networks and should be changed.

Question 2

Which of the following subnet masks would allow for 192.168.0.3 and 192.168.0.240 to be in the same subnet?

A. 255.255.255.0
B. 255 255.255.128
C. 255.255.255.192
D. 255.255.255.248

Answer 2

A. 255.255.255.0

Question 3

Which of the following is an invalid MAC address? 
A. AA:CE:58:FD:90:08 
B. 44:98:3E:F8:33:23 
C. 56:AD:BX:89:55:54 
D. 94:9E:FE:EE:8C:DF

Answer 3

C. 56:AD:BX:89:55:54

Question 4

Which of the following is the default subnet mask for a Class B address?

A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255

Answer 4

B. 255.255.0.0

Question 5

Which of the following MUST be kept synchronized in order for Kerberos to work?

A. Certificate
B. Ticket
C. Time
D. Token

Answer 5

C. Time

Question 6

Which of the following provides the use of a secure tunnel for telecommuting without manually installing and 
configuring encryption software? 
A. RDP 
B. SSL VPN 
C. ISAKMP 
D. TLS 2.0

Answer 6

B. SSL VPN

Question 7

A computer on VLAN 10 with the IP address .168.1.45/27 cannot ping a computer on VLAN 20 with the IP
address .168.1.65/27. Which configuration change will allow the PING to be successful?

A. Replace the router with a Layer 2 switch that supports VLANs
B. Change VLAN 20 computers Default Gateway to 192.168.1.127/27
C. Change VLAN 10 computers Default Gateway to 192.168.1.32/27
D. AllowICMP to pass through the Router

Answer 7

D. AllowICMP to pass through the Router

Question 8

Which of the following allows a central point to simultaneously address other points without addressing all of them?

A. Multicast
B. Subnetting
C. Unicast
D. Broadcast

Answer 8

A. Multicast

Question 9

Which of the following DNS records would allow for a website to have more than one FQDN?

A. TXT
B. PTR
C. MX
D. CNAME

Answer 9

D. CNAME

Question 10

A company has installed an access point and configured it to broadcast at 802.11n only. Some users are stating that they
cannot connect to this access point. Which of the following is the MOST likely reason some users cannot connect?

A. Incorrect channel
B. Weak encryption
C. Incompatible NICs
D. Incorrect SSID

Answer 10

C. Incompatible NICs