In which circumstance are multiple copies of the same unicast frame. likely to be transmitted in the Ezonexam Switched LAN?A. During high traffic periodsB. In an improperly implemented redundant topologyC. After broken links are re-establishedD. When uppe

第1题：

第2题：

第3题：

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.

正确答案:C

第5题：

pany has a Catalyst 6500 and you need to configure redundancy between the supervisor  modules. With route processor redundancy （RPR+）， the redundant supervisor engine is fully initialized and configured， which shortens the switchover time if the active supervisor engine fails.   Which three statements are true about the RPR + operations when the redundant supervisor  engine switched over the failed primary supervisor engine？ （）

• A、 Static IP routes are maintained across a switchover because they are configured from entries in  the configuration file.
• B、 Information about dynamic routing states， maintained on the active supervisor engine， is  synchronized to the redundant supervisor engine and is transferred during the switchover.
• C、 Information about dynamic routing states， maintained on the active supervisor engine， is not  synchronized to the redundant supervisor engine and is lost on switchover.
• D、 The Forwarding Information Base （FIB） tables are cleared on a switchover. As a result， routed  traffic is interrupted until route tables reconverge.
• E、 Static IP routes are cleared across a switchover and recreated from entries in the configuration  file on the redundant supervisor engine.
• F、 The Forwarding Information Base （FIB） tables are maintained during the switchover. As a  result， routed traffic continues without any interruption when the failover occurs.

正确答案:A,C,D

第6题：

Which statement best describes the application of link fragmentation and interleaving （LFI）？（）

• A、It compresses the Layer 2 payload and marks the packet as a high priority to be transmitted first
• B、It fragments larger packets and allows VoIP packets to be transmitted in between them.
• C、It stops the transmission of large packets when priority packets arrive.
• D、It sends high priority packets in between normal traffic packets.

正确答案:B

第7题：

Company has a Catalyst 6500 and you need to configure redundancy between the supervisormodules. With route processor redundancy （RPR+）， the redundant supervisor engine is fullyinitialized and configured， which shortens the switchover time if the active supervisor engine fails.Which three statements are true about the RPR + operations when the redundant supervisorengine switched over the failed primary supervisor engine？（）

• A、Static IP routes are maintained across a switchover because they are configured from entries inthe configuration file
• B、Information about dynamic routing states， maintained on the active supervisor engine， issynchronized to the redundant supervisor engine and is transferred during the switchover
• C、Information about dynamic routing states， maintained on the active supervisor engine， is notsynchronized to the redundant supervisor engine and is lost on switchover
• D、The Forwarding Information Base （FIB） tables are cleared on a switchover. As a result， routedtraffic is interrupted until route tables reconverge
• E、Static IP routes are cleared across a switchover and recreated from entries in the configurationfile on the redundant supervisor engine
• F、The Forwarding Information Base （FIB） tables are maintained during the switchover. As aresult， routed traffic continues without any interruption when the failover occurs

正确答案:A,C,D

第8题：

Which of the following is the purpose of QoS?（）

• A、Load balance traffic across multiple LAN and WAN links.
• B、Increase speed of network traffic.
• C、Classify, mark, and prioritize traffic on WAN and LAN links
• D、Guarantee traffic delivery.

正确答案:C

第9题：

After updating the system, the system administrator runs the lppchk-v command. During this process, the bos.rte.libc is in a broken state. Which of the following procedures should be performed to fix this problem?（）

• A、Reinstall the system
• B、Use installp -r to reject the broken fileset
• C、Use installp -acgFXd to reinstall the fileset at the same level
• D、Use install -u to remove this broken fileset and reinstall it again

正确答案:C

第10题：

第11题：

第12题：

第13题：

第14题：

第15题：

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?（）

• A、after broken links are re-established
• B、in an improperly implemented redundant topology
• C、when upper-layer protocols require high reliability
• D、during high traffic periods
• E、when a dual ring topology is in use

正确答案:B

第16题：

In Multicast VPN （MVPN） implementations， which two of the following statements are regarding the DefaultMDT Group？（）

• A、It is used for PIM control traffic
• B、It is optionally configured for a high bandwidth multicast source to reduce multicast traffic replication to uninterested PE routers
• C、Within the VPF configuration in the PE router， multiple Default MDT groups are configured so each VPF can support multiple multicast sources
• D、There is a reduced multicast state in the MPLS core P routers
• E、When multicast traffic exceeds a certain configured threshold， traffic from the Data MDT is switched to the Default MDT to conserve bandwidth

正确答案:A,D

第17题：

How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?（）

• A、Traffic is switched from the first node receiving the AIS indication.
• B、Traffic is switched from the far side of the failure, allowing handshaking to occur.
• C、UPSR traffic is switched from the terminating node, BLSR traffic is rerouted from the originating node in the ring.
• D、UPSR traffic is switched from the terminating node, circuit by circuit. BLSR traffic is rerouted from the last reachable node in the ring.

正确答案:D

第18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.

正确答案:C

第19题：

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switchedLAN？（）

• A、after broken links are re-established
• B、in an improperly implemented redundant topology
• C、when upper-layer protocols require high reliability
• D、during high traffic periods
• E、when a dual ring topology is in use

正确答案:E

第20题：

When planning for redundant power sources in a server deployment， which of the following should be purchased？（）

• A、RAID controllers
• B、Multiple UPSs
• C、Redundant cooling
• D、Dual NICs
• E、Redundant power supplies

正确答案:B,E

第21题：

Which statement describes exception traffic?（）

• A、Exception traffic must be sent to the PFE for processing.
• B、Exception traffic enters one ingress port and is sent out multiple egress ports.
• C、Exception traffic is rate-limited on the internal link to prevent DoS attacks.
• D、Exception traffic is processed after forwarding traffic when congestion exists.

正确答案:C

第22题：

第23题：