多选题While troubleshooting connectivity issues, you log into a remote router. From there,you wish to see the layer 1 and layer 2 status of the interface. Which of the following IOS commands would you issue to check the current IP addressing, as well as they

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第2题：

While troubleshooting a connectivity issue from a PC you obtain the following information: Local PC IP address: 10.0.0.35/24 Default Gateway: 10.0.0.1 Remote Sever: 10.5.75.250/24 You then conduct the following tests from the local PC: Ping 127.0.0.1 – Successful Ping 10.0.0.35 – Successful Ping 10.0.0.1 – Unsuccessful Ping 10.5.75.250 – Unsuccessful What is the underlying cause of this problem?（）

• A、A remote physical layer problem exists.
• B、The host NIC is not functioning.
• C、TCP/IP has not been correctly installed on the host.
• D、A local physical layer problem exists.

第3题：

An administrator is troubleshooting wireless connectivity issues at a client’s office and discoversthat the machine loses connectivity when the wireless phone is being used. Which of the following WAPS should be installed to help resolve the issue?（）

• A、802.1 1g
• B、802.1X
• C、802.11n
• D、802.11b

第4题：

While you are troubleshooting network performance issues， you notice that a switch is periodically flooding all unicast traffic. Further investigation reveals that periodically the switch is also having spikes in CPU utilization， causing the MAC address table to be flushed and relearned. What is the most likely cause of this issue？（）

• A、a routing protocol that is flooding updates
• B、a flapping port that is generating BPDUs with the TCN bit set
• C、STP is not running on the switch
• D、a user that is downloading the output of the show-tech command
• E、a corrupted switch CAM table

第5题：

While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）

• A、The data link layer
• B、The application layer
• C、The access layer
• D、The session layer
• E、The network layer

第6题：

While troubleshooting a network connectivity issue, you suspect that a router may be missing a route, or may be receiving bad routing information to a destination. What command should you issue to view the route that the router will use to reach a given destination?（）

• A、ping
• B、trace
• C、show ip route
• D、show interface
• E、show cdp neighbors

第7题：

While performing the backup of the flash recovery area, you notice that one of the archived redo log files is missing. You have multiple destinations for archived redo log files. What implications does it have on the backup of the flash recovery area?（）

• A、The backup fails because one of the archived redo log files is missing. 
• B、The backup succeeds but it would be without the missing archived log. 
• C、During backup, you are prompted for the alternative destination for the missing archived redo log file. 
• D、The backup succeeds because it fails over to one of the alternative archived redo log destinations. 

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第14题：

While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate（）。

• A、The port is experiencing errors
• B、The port is administratively disabled
• C、The port is blocked by spanning tree
• D、The port has an active link with normal traffic activity

第15题：

Your network is suffering from regular outages. After troubleshooting， you learn that the transmit  lead of a fiber uplink was damaged. Which two features can prevent the same issues in the  future？（）

• A、root guard
• B、loop guard
• C、BPDU guard
• D、UDLD
• E、BPDU skew detection

第16题：

EIGRP is being used as the routing protocol on the company network. While troubleshooting somenetwork connectivity issues， you notice a large number of EIGRP SIA （Stuck in Active） messages.What causes these SIA routes？（）

• A、The neighboring router stops receiving ACK packets from this router
• B、The neighboring router starts receiving route updates from this router
• C、The neighboring router is too busy to answer the query （generally caused by high CPUutilization）
• D、The neighboring router is having memory problems and cannot allocate the memory to processthe query or build the reply packet

第17题：

While troubleshooting connectivity issues, you log into a remote router. From there,you wish to see the layer 1 and layer 2 status of the interface. Which of the following IOS commands would you issue to check the current IP addressing, as well as theyer 1 and layer 2 status of an interface?（）

• A、TK1# show version
• B、TK1# show protocols
• C、TK1# show interfaces
• D、TK1# show controllers
• E、TK1# show ip interface
• F、TK1# show startup-config

第18题：

You are maintaining your OLTP database in Oracle10g. While observing the performance of the database， you find that the log switch occurs more than once for every 20 minutes， affecting the database performance. Which factor is responsible for frequent log switches？（）  

• A、the value of the UNDO_RETENTION initialization parameter
• B、the value of the optimal redo log file size provided by the Redo Logfile Size Advisor
• C、the online redo log files size
• D、the number of redo log members in a group

第19题：

Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel-based recovery？ （）

• A、 You find that one of the redo log members in each redo log group is lost.
• B、 You find that a data file that belongs to the USERS tablespace is damaged.
• C、 You find that a data file that belongs to the SYSTEM tablespace is damaged.
• D、 You find that the current redo log group is damaged and is not available for recovery.
• E、 You realized while performing a recovery that an archived redo log file needed for recovery is lost.

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