300-115 Exam
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Q81. A DHCP configured router is connected directly to a switch that has been provisioned with DHCP snooping. IP Source Guard with the ip verify source port-security command is configured under the interfaces that connect to all DHCP clients on the switch. However, clients are not receiving an IP address via the DHCP server. Which option is the cause of this issue?
A. The DHCP server does not support information option 82.
B. The DHCP client interfaces have storm control configured.
C. Static DHCP bindings are not configured on the switch.
D. DHCP snooping must be enabled on all VLANs, even if they are not utilized for dynamic address allocation.
Answer: A
Q82. A network engineer must implement Ethernet links that are capable of transporting frames and IP traffic for different broadcast domains that are mutually isolated. Consider that this is a multivendor environment. Which Cisco IOS switching feature can be used to achieve the task?
A. PPP encapsulation with a virtual template
B. Link Aggregation Protocol at the access layer
C. dot1q VLAN trunking
D. Inter-Switch Link
Answer: C
Q83. What is the default amount by which the hot standby priority for the router is decremented or incremented when the interface goes down or comes back up?
A. 1
B. 5
C. 10
D. 15
Answer: C
Q84. Which statement about Cisco Discovery Protocol configuration on a Cisco switch is true?
A. CDP is enabled by default and can be disabled globally with the command no cdp run.
B. CDP is disabled by default and can be enabled globally with the command cdp enable.
C. CDP is enabled by default and can be disabled globally with the command no cdp enable.
D. CDP is disabled by default and can be enabled globally with the command cdp run.
Answer: A
Q85. While working in the core network building, a technician accidently bumps the fiber connection between two core switches and damages one of the pairs of fiber. As designed, the link was placed into a non-forwarding state due to a fault with UDLD. After the damaged cable was replaced, the link did not recover. What solution allows the network switch to automatically recover from such an issue?
A. macros
B. errdisable autorecovery
C. IP Event Dampening
D. command aliases
E. Bidirectional Forwarding Detection
Answer: B
Q86. When IP Source Guard with source IP filtering is enabled on an interface, which feature must be enabled on the access VLAN for that interface?
A. DHCP snooping
B. storm control
C. spanning-tree portfast
D. private VLAN
Answer: A
Q87. Refer to the exhibit.
When a network administrator is attempting an SSH connection to the device, in which order does the device check the login credentials?
A. RADIUS server, local username, line password
B. RADIUS server, line password, local username
C. Line password, local username, RADIUS server
D. Line password, RADIUS server, local username
Answer: A
Q88. Which switch feature prevents traffic on a LAN from being overwhelmed by continuous multicast or broadcast traffic?
A. storm control
B. port security
C. VTP pruning
D. VLAN trunking
Answer: A