In a switched LAN network, what is the Spanning-Tree algorithm used for?A. It is used to provide a mechanism for routing updates in switched environments.B. It is used to prevent routing loops in networks with redundant routes.C. It is used to prevent swi

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第2题：

IP routing protocols， such as OSPF and Enhanced EIGRP， are used primarily in network designs that contain entry and exit points to the network from service providers. What is a common trait of IP routing  protocols？（）  

• A、 They add needed overhead in smaller deployments.
• B、 They are essential for optimum and redundant forwarding.
• C、 They are used primarily in larger network designs，to support different networks and single entry and  exit points.
• D、 They are usually necessary in smaller deployments.

第3题：

Which BGP attribute is used by BGP to prevent routing loops?（）

• A、AS - path
• B、next - hop
• C、MED
• D、weight
• E、local preference
• F、origin

第4题：

What is the purpose of the spanning-tree algorithm in a switched LAN?（）

• A、To provide a monitoring mechanism for networks in switched environments.
• B、To manage VLANs across multiple switches.
• C、To prevent switching loops in networks with redundant switched paths.
• D、To segment a network into multiple collision domains.
• E、To prevent routing loops in networks.

第5题：

Which routing table stores IPv4 unicast routes and is used by multicast routing protocols to prevent loops?（）

• A、inet.0
• B、inet.1
• C、inet.2
• D、inet.3

第6题：

Intermediate system to intermediate system (IS - IS), is a protocol used by network devices (routers) to determine the best way to forward datagrams through a packet - switched network, a process called routing. Which three attributes are of the IS - IS routing protocol? （）

• A、supports VLSM
• B、link - state routing protocol
• C、operati on is similar to BGP
• D、supports two routing levels within an autonomous system

第7题：

Which two are advantages of static routing when compared to dynamic routing?（）

• A、Security increases because only the network administrator may change the routing tables
• B、Configuration complexity decreases as network size increases
• C、Routing updates are automatically sent to neighbors
• D、Route summarization is compued automatically by the router
• E、Routing traffic load is reduced when used in stub network links
• F、An efficient algorithm is used to build routing tables,using automatic updates
• G、Routing tables adapt automatically to topology changes.

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第13题：

Which of the following technologies can be used in distance vector routing protocols to prevent routing loops?（）

• A、Spanning Tree Protocol
• B、Shortest path first tree
• C、Link-state advertisements (LSA)
• D、Hold-down timers
• E、Split horizon
• F、VRP

第14题：

RIP version 2 is being used as the routing protocol within the Testking network.What does RIP version 2 use to prevent routing loops?（）

• A、CIDR
• B、Split horizon
• C、Authentication
• D、Classless masking
• E、Hold-down timers
• F、Multicast routing updates
• G、Path Vectoring

第15题：

Which of the following routing protocols are less likely prone routing loops and network reachability problems when used in discontiguous networks?（）

• A、IGRP
• B、CDP
• C、OSPF
• D、RIP v1
• E、RIP v2
• F、EIGRP

第16题：

What is a characteristic of ISL and 802.1q frame tagging in a switched LAN environment?（）

• A、They are used to find the best path through a network.
• B、They allow the exchange of filtering tables.
• C、They specify different implementations of the Spanning-Tree Protocol.
• D、They allow the exchange of routing tables
• E、They provide inter-switch VLAN communication.

第17题：

In a switched LAN network, what is the Spanning-Tree algorithm used for?（）

• A、It is used to provide a mechanism for routing updates in switched environments.
• B、It is used to prevent routing loops in networks with redundant routes.
• C、It is used to prevent switching loops in networks with redundant switched routes.
• D、It is used to manage, the addition, deletion, and naming of VLANs across multiple switches.
• E、It is used to segment a network into multiple collision domains.
• F、None of the above.
• G、All of the above are functions of STP.

第18题：

Which two are advantages of static routing when compared to dynamic routing？（）

• A、Security increases because only the network administrator may change the routing tables.
• B、Configuration complexity decreases as network size increases.
• C、Routing updates are automatically sent to neighbors.
• D、Route summarization iscompued automatically by the router.
• E、Routing traffic load is reduced when used in stub network links
• F、An efficient algorithm is used to build routing tables，using automatic updates.
• G、Routing tables adapt automatically to topology changes.

第19题：

Which two are advantages of static routing when compared to dynamic routing?（）

• A、Security increases because only the network administrator may change the routing tables.
• B、Configuration complexity decreases as network size increases.
• C、Routing updates are automatically sent to neighbors.
• D、Route summarization iscompued automatically by the router.
• E、Routing traffic load is reduced when used in stub network links.
• F、An efficient algorithm is used to build routing tables,using automatic updates.
• G、Routing tables adapt automatically to topology changes.

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