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Q31. Which two can be used as a branch office WAN solution? (Choose two.)
A. frame relay
B. MPLS
C. Metro Ethernet
D. GPRS
E. dial-up modem
F. 3G USB modems
Answer: B,C
Explanation: Explanation Frame relay is old 'shared' technology today's sites use some flavor or Metro E or MPLS/VPN
Q32. Which three protocols support VLSM? (Choose three.)
A. RIPv2
B. RIPv1
C. EIGRP
D. OSPF
E. IGRP
Answer: A,C,D
Q33. Which of these is the equation used to derive a 64 Kbps bit rate?
A. 2 x 8 kHz x 4-bit code words
B. 8 kHz x 8-bit code words
C. 2 x 4-bit code words x 8 kHz
D. 2 x 4 kHz x 8-bit code words
Answer: D
Explanation: While the human ear can sense sounds from 20 to 20, 000 Hz, and speech encompasses sounds from about 200 to 9000 Hz, the telephone channel was designed to operate at about 300 to 3400 Hz. This economical range carries enough fidelity to allow callers to identify the party at the far end and sense their mood. Nyquist decided to extend the digitization to 4000 Hz, to capture higher-frequency sounds that the telephone channel may deliver. Therefore, the highest frequency for voice is 4000 Hz. According to Nyquist theory, we must double the highest frequency, so 2x4kHz = 8kHz.
Each sample will be encoded into a 8-bit code. Therefore 8kHz x 8-bit code = 64 Kbps (notice about the unit Kbps: 8kHz = 8000 samples per second so 8000 x 8-bit = 64000 bit per second = 64 Kilobit per second = 64 Kbps)
Link: http://encyclopedia2.thefreedictionary.com/Nyquist+theorem
Note:
Nyquist theory:
“When sampling a signal (e.g., converting from an analog signal to digital), the sampling frequency must be greater than twice the bandwidth of the input signal in order to be able to reconstruct the original perfectly from the sampled version.”
Q34. Which three statements are true regarding the virtual interface on a Cisco Wireless LAN Controller? (Choose three.)
A. supports mobility management
B. serves as a DHCP relay
C. used for all controller to AP communication
D. supports embedded Layer 3 security
E. default for out-of-band management
F. default for in-band management
G. provides connectivity to AAA servers
Answer: A,B,D
Q35. Which two routing protocols converge most quickly? (Choose two.)
A. RIPv1
B. RIPv2
C. BGP
D. OSPF
E. EIGRP
Answer: D,E
Q36. What type of device can be installed to increase a broadcast domain?
A. router
B. switch
C. IDS
D. IPS
Answer: B
Q37. Which statement describes the methodology that supports the Cisco Enterprise Architecture models?
A. It divides the network into functional network modules.
B. It divides the network into role-based network modules.
C. It divides the network into regional network modules.
D. It divides the network into operational network modules.
Answer: A
Q38. An organization is deciding what routing protocol to use throughout their network. What must be considered if routing is to be performed at the access layer?
A. reduced scalability of the network when introducing a large number of switch blocks into the routing table
B. centralized management of access control lists at the distribution layer
C. reliability when implementing routing over spanning-tree at the access layer
D. performance differences between core, distribution and access layer equipment
Answer: D
Q39. Which is the North American RIR for IPv4 addresses?
A. RIPE
B. ARIN
C. IANA
D. IEEE
E. APNIC
Answer: B
Q40. Which three modular components are part of the Cisco Enterprise Edge Architecture? (Choose three.)
A. e-commerce module
B. Internet connectivity module
C. server farm module
D. remote access and VPN module
E. PSTN services module
F. enterprise branch module
G. building distribution module
Answer: A,B,D