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Following questions and answers are all new published by Avaya Official Exam Center: http://www.lead2pass.com/640-875.html
QUESTION 121
A centralized DHCP server has been setup for customer use. What command is required on the customer Switched Virtual Interface (SVI) to allow clients to receive addresses from this server?
A. switch(config-if)#ip helper-address
B. switch(config)#ip helper-address
C. switch(config-if)#ip dhcp-address
D. switch(config-if)#ip dhcp-gateway
E. switch(config-if)#helper-address
Answer: A
QUESTION 122
What are three features present on both ICMPv4 and ICMPv6? (Choose three.)
A. Connectivity tests
B. Address assignment
C. Information error messaging
D. Address resolution
E. Mobile IPv4 support
F. Multicast group management
G. Mobile IPv6 support
H. Fragmentation needed notification
Answer: ACH
QUESTION 123
A network administrator issues the who command on a Cisco router, which takes longer than usual to display the results. Which two commands can be used to speed up the process? (Choose two.)
A. nslookup
B. no ip-domain lookup
C. ip name-server
D. ipconfig /all
E. ifconfig
Answer: BC
QUESTION 124
A network engineer has configured an interface with various commands including the no shutdown command on an IOS-XR device. Both sides of the interface have been validated and the cable has been tested. Which command does the network engineer need to input?
A. switch#copy running-configuration startup-configuration
B. switch#commit config
C. (config)#commit
D. switch(config)#commit config
E. switch#write memory
Answer: C
QUESTION 125
A Passive Optical Network is a point-to-multipoint FTTx network architecture that relies on which of the following?
A. Electrically powered optical splitters
B. Unpowered optical splitter
C. Customer optical network terminal
D. Network interface controller
Answer: B
QUESTION 126
Which two commands can be used to enable LACP when configuring the interfaces for a 40 gigabit etherchannel? (Choose two.)
A. switch (config-if)# channel-group 1 mode active
B. switch (config-if)# channel-group 1 mode auto
C. switch (config-if)# channel-group 1 mode desirable
D. switch (config-if)# channel-group 1 mode passive
E. switch (config-if)# channel-group 1 mode LACP
Answer: AD
QUESTION 127
Refer to the exhibit. Based on the configurations shown, why is the serial link in up/down status? 
A. Mismatch hostnames
B. Passwords are in plain text
C. Mismatch of authentication type
D. Wrong configuration mode for command input
Answer: C
QUESTION 128
What is a the best way to secure the route processor on a Cisco device?
A. Route processor traffic control
B. Control plane quality of service
C. Control plane policing
D. Access lists
Answer: C
QUESTION 129
Which best describes the relationship between user groups and task groups?
A. User groups include task ID’s that are nested task groups.
B. Groups can be nested within other groups.
C. Tasks groups are not related to user groups.
D. Task groups are assigned to user groups to established privileged levels.
Answer: D
QUESTION 130
What is the Cisco IOS command that is used to prevent the route of the incoming traffic from an unknown network?
A. Interface FastEthernet 0/0ip verify unicast source reachable-via any allow-default
B. Interface FastEthernet 0/0ip verify multicast source reachable-via any allow-default
C. Interface FastEthernet 0/0ip verify unicast destination reachable-via any allow-default
D. Interface FastEthernet 0/0ip verify multicast destination reachable-via any allow-default
Answer: A
QUESTION 131
Refer to the exhibit. A network administrator is setting up a new core router to be a secondary NTP server. What command would need to be added to NTP Client configuration shown? 
A. NTP server 209.165.200.227 preferNTP server 209.165.200.226
B. NTP server 209.165.200.227NTP server 209.165.200.226 secondary
C. NTP server 209.165.200.227 preferNTP server 209.165.200.226 backup
D. NTP server 209.165.200.227NTP server 209.165.200.226 prefer
Answer: A
QUESTION 132
Refer to the exhibit. A new policy requires all configurations to be saved to flash and backed up to a TFTP server based off the hostname at 12:05am every day. Based upon the configuration, which two commands are required to accomplish this? (Choose two.) 
A. kron occurrence daily-config-backup at 0:05 recurringpolicy-list backup-config
B. kron occurrence daily-config-backup at 12:05 recurringpolicy-list backup-config
C. kron policy-list backup-configcli write memorycli show running-config| redirect
tftp://209.165.200.226/$h.cfg
D. kron policy-list backup-configcli write memorycli show running-config| redirect
tftp://209.165.200.226/$hostname.cfg
Answer: AC
QUESTION 133
What is the measurement of the Cisco IP SLA Operation ICMP Pather Jitter?
A. Measures delay and jitter on networks utilizing UDP traffic
B. Measures packet loss, jitter, and delay per hop in IP networks
C. Measures round-trip delay only in UDP traffic networks
D. Measures IP networks-only round-trip delay
Answer: B
QUESTION 134
Which two commands are required to enter enable mode on a console port without entering a password? (Choose two.)
A. Privilege 15
B. Input SSH
C. Line VTY 0 4
D. No login
E. Privilege 0
Answer: AD
QUESTION 135
What is the Cisco recommended way to secure SNMPv2 community strings?
A. Configure complex community string names and avoid using default settings
B. Create multiple read/write strings to keep the attacker guessing
C. Use access-lists to limit the amount of access to the community strings
D. Use SNMPv3 to limit the amount of memory overhead
Answer: C
QUESTION 136
What is the Cisco IOS command to export IPv6 flows to Collector 209.165.200.200/24?
A. Switch(config)#ipv6 flow-export destination 209.165.200.200 9996
B. Switch(config)#ip flow-export destination 209.165.200.200 9996
C. Switch(config)#ip flow-export destination 209.165.200.200 255.255.255.0
D. Switch(config)#ip flow-export destination fe08::0ABC:1 9996
Answer: A
QUESTION 137
Which layer of the OSI Model does Label Distribution Protocol operate at?
A. Data Link
B. Transport
C. Application
D. Presentation
E. Session
F. Network
Answer: A
QUESTION 138
A network engineer has been provided subnet 209.165.202.128/27. What is the last usable IP address in this network and what is the subnet mask?
A. 209.165.202.158 and 255.255.255.224
B. 209.165.202.159 and 255.255.255.192
C. 209.165.202.158 and 255.255.255.192
D. 209.165.202.128 and 255.255.255.192
E. 209.165.202.128 and 255.255.255.224
Answer: A
QUESTION 139
On Switch 5, which command would configure VLAN 5 as root?
A. switch5#spanning-tree vlan 5 priority 0
B. switch5(config)#spanning-tree vlan 5 priority 61440
C. switch5(config)#spanning-tree vlan 5 root
D. switch5(config)#spanning-tree vlan 5 priority 0
E. switch5(config-if)#spanning-tree rootguard
Answer: D
QUESTION 140
Which EIGRP feature in IOS, IOS-XE, and IOS-XR will prevent the EIGRP process from automatically forming a neighbor adjacency?
A. Access-lists
B. Link speed and duplex
C. MTU Size
D. Passive interface
E. Bandwidth and delay
Answer: D
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