You are the network administrator for your company and have configured Cisco Discovery Protocol (CDP) in your network. You recently noticed that when devices
send large numbers of CDP neighbor announcements, some devices are crashing. You decide to disable CDP on the router.
Which command should you use to achieve the objective?
A.
no cdp run
B.
set cdp disable
C.
no cdp enable
D.
no cdp advertise-v2
Explanation:
You should use the no cdp run command to disable CDP on the router. Due to a known vulnerability regarding the handling of CDP by Cisco routers and switches
when devices send large numbers of CDP neighbor announcements, some devices can crash or cause abnormal system behavior. To overcome this problem, you
can disable CDP for the entire router by using the no cdp run command.
You cannot use the set cdp disable command to disable CDP on the router. This command disables CDP on an entire Catalyst switch.
You cannot use the no cdp enable command to disable CDP on the router. This command disables CDP on a specific interface.
You cannot use the no cdp advertise-v2 command to disable CDP on the router. This command disables CDPv2 advertisements.
Objective:
LAN Switching Fundamentals
Sub-Objective:
Configure and verify Layer 2 protocolsCisco > Support > Using Cisco Discovery Protocol
Cisco > Support > Technology Support > Network Management > Cisco’s Response to the CDP Issue > Document ID: 13621
I have already passed the 200-125 Exam yesterday in USA.Questions here are not enough because i also got many new questions:
QUESTION
What are three benefits of GLBP? (Choose three.)
A. GLBP supports up to eight virtual forwarders per GLBP group.
B. GLBP supports clear text and MD5 password authentication between GLBP group members.
C. GLBP is an open source standardized protocol that can be used with multiple vendors.
D. GLBP supports up to 1024 virtual routers.
E. GLBP can load share traffic across a maximum of four routers.
F. GLBP elects two AVGs and two standby AVGs for redundancy.
Answer: BDE
QUESTION
Which three statements about HSRP operation are true? (Choose three.)
A. The virtual IP address and virtual MA+K44C address are active on the HSRP Master router.
B. The HSRP default timers are a 3 second hello interval and a 10 second dead interval.
C. HSRP supports only clear-text authentication.
D. The HSRP virtual IP address must be on a different subnet than the routers’ interfaces on the same LAN.
E. The HSRP virtual IP address must be the same as one of the router’s interface addresses on the LAN.
F. HSRP supports up to 255 groups per interface, enabling an administrative form of load balancing.
Answer: ABF
QUESTION
Which three statements about Syslog utilization are true? (Choose three.)
A. Utilizing Syslog improves network performance.
B. The Syslog server automatically notifies the network administrator of network problems.
C. A Syslog server provides the storage space necessary to store log files without using router disk space.
D. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages.
E. Enabling Syslog on a router automatically enables NTP for accurate time stamping.
F. A Syslog server helps in aggregation of logs and alerts.
Answer: CDF
QUESTION
A network administrator enters the following command on a router: logging trap 3. What are three message types that will be sent to the Syslog server? (Choose three.)
A. informational
B. emergency
C. warning
D. critical
E. debug
F. error
Answer: BDF
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