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200-125 模擬対策 & 200-125日本語 復習教材

 

NO.1 Configuration of which option is required on a Cisco switch for the Cisco IP phone to work?
A. PortFast on the interface
B. the interface as an access port to allow the voice VLAN ID
C. Cisco Discovery Protocol in global configuration mode
D. a voice VLAN ID in interface and global configuration mode
Answer: B

200-125 対策   200-125 通信   
Configure the Switch Port to Carry Both Voice and Data Traffic
When you connect an IP phone to a switch using a trunk link, it can cause high CPU utilization in the
switches. As all
the VLANs for a particular interface are trunked to the phone, it increases the number of STP
instances the switch has
to manage. This increases the CPU utilization. Trunking also causes unnecessary broadcast / multicast
/ unknown
unicast traffic to hit the phone link.
In order to avoid this, remove the trunk configuration and keep the voice and access VLAN configured
along with
Quality of Service (QoS). Technically, it is still a trunk, but it is called a Multi-VLAN Access Port
(MVAP). Because voice
and data traffic can travel through the same port, you should specify a different VLAN for each type
of traffic. You can
configure a switch port to forward voice and data traffic on different VLANs. Configure IP phone ports
with a voice
VLAN configuration. This configuration creates a pseudo trunk, but does not require you to manually
prune the
unnecessary VLANs.
The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. The voice
VLAN feature is
disabled by default. The Port Fast feature is automatically enabled when voice VLAN is configured.
When you disable
voice VLAN, the Port Fast feature is not automatically disabled.

NO.2 Refer to the exhibit.
A network associate has configured OSPF with the command:
City(config-router)# network 192.168.12.64 0.0.0.63 area 0
After completing the configuration, the associate discovers that not all the interfaces are
participating in OSPF. Which
three of the interfaces shown in the exhibit will participate in OSPF according to this configuration
statement?
(Choose three.)
A. Serial0/0
B. Serial0/1.103
C. FastEthernet0 /1
D. Serial0/1.104
E. Serial0/1.102
F. FastEthernet0 /0
Answer: A,C,E

200-125 合格   200-125 問題集   
Explanation:
The "network 192.168.12.64 0.0.0.63" equals to network 192.168.12.64/26. This network has:
+ Increment: 64 (/26= 1111 1111.1111 1111.1111 1111.1100 0000)
+ Network address: 192.168.12.64
+ Broadcast address: 192.168.12.127
Therefore all interfaces in the range of this network will join OSPF.

NO.3 Which subnet mask would be appropriate for a network address range to be subnetted for up
to eight LANs, with
each LAN containing 5 to 26 hosts?
A. 255.255.255.240
B. 255.255.255.252
C. 0.0.0.240
D. 255.255.255.0
E. 255.255.255.224
Answer: E

200-125 模擬   
Explanation:
For a class C network, a mask of 255.255.255.224 will allow for up to 8 networks with 32 IP addresses
each (30
usable).

NO.4 Which three circumstances can cause a GRE tunnel to be in an up/down state? (Choose three.)
A. The ISP is blocking the traffic.
B. The tunnel interface is down.
C. The tunnel interface IP address is misconfigured.
D. The tunnel address is routed through the tunnel itself.
E. A valid route to the destination address is missing from the routing table.
F. An ACL is blocking the outbound traffic.
Answer: B,D,E

200-125 ダウンロード   

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試験番号:200-125問題集
試験科目:CCNA Cisco Certified Network Associate CCNA (v3.0)
最近更新時間:2017-01-20
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試験番号:200-125日本語問題集
試験科目:CCNA Cisco Certified Network Associate CCNA (v3.0) (200-125日本語版)
最近更新時間:2017-01-20
問題と解答:全550問 200-125日本語 復習教材
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