CCIE系列认证
单选题What Cisco technology protects against Spanning-Tree Protocol manipulation？（）ASpanning tree protectBRoot Guard and BPDU GuardCUnicast Reverse Path ForwardingDMAC spoof guardEPort Security
题目
Spanning tree protect
Root Guard and BPDU Guard
Unicast Reverse Path Forwarding
MAC spoof guard
Port Security
相似问题和答案
第1题：
Chafing gear ______.
A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold
第2题：
What is the reason for running spanning-tree in a Cisco Single-Site Secure Network Foundation Solution？（）
- A、To protect the network in case someone inadvertently creates a physical loop in it
- B、To ensure that if a device fails another device automatically take over for it
- C、To allow management of all network devices
- D、To aggregate logical network groups together at one central point
正确答案:A
第3题：
A. Pressure
B. Heat
C. Brown out
D. Cold
第4题：
What is the purpose of Dual Ring Interconnect with D C for SDH rings？（）
- A、Protects signals when a ring switch fails
- B、Protects signals when multiple span switches fail
- C、Protects pre-emptible traffic from being dropped when a ring switch occurs
- D、Protects signals against any combination of link failure in each ring
正确答案:D
第5题：
You are Cisco Channel Partner Account Manager. Which service component within the preparephase recommends the appropriate technology strategy to address a business requirement of the customer？（）
- A、 finding out what a customer requires from a proposed solution
- B、 analyzes the customer’s business requirements and recommends the appropriate Cisco technologies to meet business requirements
- C、 finding out what end-user training a customer requires
- D、 finding out a customer’s physical requirements
正确答案:B
第6题：
What can you install on IPCC Express to protect against worms, zero-day viruses, and other immediate security threats?（）
- A、Microsoft Management Console
- B、Cisco Security Agent (headless agent)
- C、Cisco Security Agent Management Center
- D、Microsoft SQL Server 2000
正确答案:B
第7题：
Which statement is true about the Cisco Self-Defending Network?（）
- A、The Cisco Self-Defending Network defines the physical position of the firewall to protect against internal and external attacks
- B、The Cisco Self-Defending Network Provides static filtering against known and unknown internal and external attacks
- C、The Cisco Self-defending Network Provides dynamic protection against known and unknown internal and external attacks
- D、The Cisco Self-defending Network Provides the Elements to install the antivirus software on the End-User Workstation
正确答案:C
第8题：
As an experienced network administrator, you are aware of the knowledge that it is unnecessary to configure complex overlay network topologies while applying Cisco Wide Area Application Services (WAAS) technology.What is most probably the reason for that?（）
A. Content pre-positioning
B. Automatic discovery of Cisco WAEs
C. Comprehensive logs, reports, and graphs
D. Remote scheduling of software distribution
第9题：
Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）
- A、Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot.
- B、UDLD protects against STP failures caused by cabling problems that create one-way links.
- C、Loop guard detects and protects against duplicate packets being received and transmitted on different ports.
- D、UDLD protects against unidirectional cabling problems on copper and fiber media.
- E、Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.
正确答案:B,E
第10题：
What are two benefits of control plane policing？（）
- A、protection against denial of service （DoS） attacks at infrastructure routers and switches
- B、 protection against known worm attacks in routers and switches
- C、quality of service （QoS） control for packets that are sourced from the data plane of Cisco routers and switches
- D、quality of service control （QoS） for packets that are destined to the control plane of Cisco routers and switches
- E、quality of service （QoS） control for packets that are destined to the data plane of Cisco routers and switches
正确答案:A,D