- Understanding the Theory of Voice VLANs
- Configuring Voice VLANs
- Power over Ethernet
- Essential Network Services: DHCP and NTP
- Understanding the Phone Bootup Process
- Installing Cisco IP Phone Firmware and XML Configuration Files
- Exam Prep Questions
- Answers to Exam Prep Questions
- Suggested Reading and Resources
Exam Prep Questions
-
What are the reasons for using 802.1Q? (Choose two.)
A.
Standards based multi-VLAN trunking
B.
To allow clients to see the 802.1Q header
C.
To provide inter-VLAN communications over a bridge
D.
To load-balance traffic between parallel links using STP
E.
To provide a voice and data VLAN on a shared connection
-
Which of the following describes the endless flooding or looping of frames in a Layer 2 switched environment?
A.
Flood storm
B.
Loop overload
C.
Broadcast storm
D.
Broadcast overload
-
Which command correctly connects an Ethernet subinterface to VLAN 50 using 802.1Q trunking?
A.
Router(config) # encapsulation 50 dot1Q
B.
Router(config) # encapsulation 802.1Q 50
C.
Router(config-if) # encapsulation dot1Q 50
D.
Router(config-if) # encapsulation 50 802.1Q
-
Which of the following is a Cisco recommendation for IP addressing deployment?
A.
Statically apply IP addresses to IP phones to ensure stability.
B.
Apply public IP addresses to IP phones so that they can be reached from the PSTN.
C.
Add IP phones with DHCP as the mechanism for obtaining IP addresses.
D.
Deploy IP phones on the same subnet as data devices.
-
Why would you need to implement a DHCP relay server?
A.
If the DHCP server does not have a local interface on the network with the DHCP clients
B.
Because the DHCP request and response process is not broadcast
C.
To relay the proprietary DHCP request of an IP phone to the standard DHCP request understood by the Cisco IOS Software
D.
If an IP phone, a data device, and a DHCP server all reside on the same subnet
-
Which protocol do IP phones use during registration to download firmware files from the flash memory of the router?
A.
HTTP
B.
DHCP
C.
FTP
D.
TFTP
-
Which of the following statements accurately describe NTP? (Choose all that apply.)
A.
NTP is used to synchronize syslog time stamps.
B.
NTP is used to synchronize call detail records.
C.
NTP is used to minimize errors during TFTP downloads.
D.
The time displayed on the IP phones must come from an NTP server.
E.
Cisco Unified Communications Manager Express can synchronize its clock to an NTP server.
F.
NTP requires the purchase of an atomic or radio clock.
-
Which of the following filenames could be used by a Cisco IP phone to synchronize its firmware with the call agent? (Choose two.)
A.
XMLdefault.cnf.xml
B.
ephone-1.cnf.xml
C.
SEP001BD5086771.cnf.xml
D.
SEP001BB35853C.cnf.xml
E.
XMLDefault.cnf.xml
-
Which of the following commands would be used to deliver firmware file SCCP41.8-3-3S.loads at the request of a Cisco IP phone?
A.
ftp-server flash:/SCCP41.8-3-3S.loads
B.
tftp-server flash:/SCCP41.8-3-3S.loads
C.
tftp-server flash:/SCCP41.8-3-3S
D.
tftp-server SCCP41.8-3-3S.loads
-
DHCP services can be configured on which of the following devices? (Choose two.)
A.
Cisco IOS routers
B.
Cisco IP phones
C.
Cisco IOS Layer 3 switches
D.
Cisco IOS Layer 2 switches