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Q71. Refer to the exhibit.
Which two conditions can cause this error message to be displayed on the console? (Choose two.)
A. The EtherChannel is configured as desirable on both ends.
B. The port-channel on the adjacent device is misconfigured.
C. There is a speed and duplex mismatch on interface fa0/12.
D. The EtherChannel is configured as auto on one of the interfaces.
Answer: B,C
Q72. Refer to the exhibit.
If a connection failure occurs between R1 and R2, which two actions can you take to allow CR-1 to reach the subnet 192.168.192.0/24 on R2? (Choose two.)
A. Create a static route on R1 for subnet 192.168.192.0/24 towards R3 and redistribute it into OSPF.
B. Turn up a BGP session between CR-1 and R1.
C. Create a static route on R1 for subnet 192.168.192.0/24 towards R3 and redistribute it into BGP.
D. Turn up an EIGRP session between R1 and R3 with AS 65535.
E. Create an OSPF virtual link between CR-1 and R2 to bypass R1.
Answer: A,B
Q73. DRAG DROP
Drag and drop the router preference on the left to the correct routing sequence (from most preferred to least preferred) on the right.
Answer:
Q74. Which three statements about OSPFv3 address families are true? (Choose three.)
A. Each address family requires the same instance ID.
B. Address families can perform route redistribution into any IPv4 routing protocol.
C. An address family can have two device processes on each interface.
D. IPv4 address family require an IPv4 address to be configured on the interface.
E. Each address family uses a different shortest path tree.
F. Different address families can share the same link state database.
Answer: B,D,E
Q75. Which two types of traffic are blocked when the storm control threshold for multicast traffic is reached on a port? (Choose two.)
A. BPDU
B. OSPF
C. CDP
D. IS-IS
E. LLDP
Answer: B,D
Q76. Which two features are supported when Cisco HDLC is implemented? (Choose two.)
A. error recovery
B. error detection
C. asynchronous links
D. multiple protocols
Answer: B,D
Explanation:
HDLC’s frame check sequence (FCS) is a 16-bit CRC-CCITT or a 32-bit CRC-32 computed over the Address, Control, and Information fields. It provides a means by which the receiver can detect errors that may have been induced during the transmission of the frame, such as lost bits, flipped bits, and extraneous bits. Cisco’s HDLC contains a proprietary field that is used to support multiple protocols.
Reference: http://en.wikipedia.org/wiki/High-Level_Data_Link_Control
Q77. Which Layer 2 tunneling technique eliminates the need for pseudowires?
A. OTV
B. L2TPv3
C. AToM
D. VPLS
Answer: A
Q78. DRAG DROP
Drag and drop the extended ping command field on the left to its usage on the right.
Answer:
Q79. What is the most secure way to store ISAKMP/IPSec preshared keys in Cisco IOS?
A. Use the service password-encryption command.
B. Encrypt the ISAKMP preshared key in secure type 5 format.
C. Encrypt the ISAKMP preshared key in secure type 7 format.
D. Encrypt the ISAKMP preshared key in secure type 6 format.
Answer: D
Explanation:
Using the Encrypted Preshared Key feature, you can securely store plain text passwords in type 6 format in NVRAM using a command-line interface (CLI). Type 6 passwords are encrypted. Although the encrypted passwords can be seen or retrieved, it is difficult to decrypt them to find out the actual password. This is currently the most secure way to store keys.
Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_ikevpn/configuration/xe-3s/asr1000/sec-ike-for-ipsec-vpns-xe-3s-asr1000-book/sec-encrypt-preshare.html
Q80. DRAG DROP
Drag each IPv6 extension header on the left to its corresponding description on the right.
Answer:
