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Exam Name: CCNA Cisco Certified Network Associate CCNA (v3.0)
Exam Code: 200-125
Associated Certifications:CCNA Routing and Switching
Duration:90 minutes (50-60 questions)
Available Languages:English, Japanese
Exam Registration:Pearson VUE
Exam Policies:Read current policies and requirements
Exam Tutorial:Review type of exam questions
Total Questions: 572 Q&As
Last Updated: Feb 28, 2017
The practice tests consists of 300+ most relevant questions with flash card explanation. The exam topics for CCENT are given below:
- Network Fundamentals 20% (weightage)
- LAN Switching Fundamentals 26%
- Routing Fundamentals 25%
- Infrastructure Services 15%
- Infrastructure Maintenance 14%
The CCNA exam and training course have been revised from v2.0 to v3.0. Candidates can choose to take either the 200-120 CCNA v2.0 exam or 200-125 CCNA v3.0 exam.
Practice Cisco 200-125 Route Training Program Online Here(#1-5)
Question No : 1 – (Topic 1)
Refer to the exhibit:
What will Router1 do when it receives the data frame shown? (Choose three.)
A. Router1 will strip off the source MAC address and replace it with the MAC address
B. Router1 will strip off the source IP address and replace it with the IP address
C. Router1 will strip off the destination MAC address and replace it with the MAC address
D. Router1 will strip off the destination IP address and replace it with the IP address of
E. Router1 will forward the data packet out interface FastEthernet0/1.
F. Router1 will forward the data packet out interface FastEthernet0/2.
Remember, the source and destination MAC changes as each router hop along with the
TTL being decremented but the source and destination IP address remain the same from
source to destination.
Question No : 2 – (Topic 1)
Refer to the graphic.
Host A is communicating with the server. What will be the source MAC address of the
frames received by Host A from the server?
A. the MAC address of router interface e0
B. the MAC address of router interface e1
C. the MAC address of the server network interface
D. the MAC address of host A
Whereas switches can only examine and forward packets based on the contents of the
MAC header, routers can look further into the packet to discover the network for which a
packet is destined. Routers make forwarding decisions based on the packet’s network
layer header (such as an IPX header or IP header). These network-layer headers contain
source and destination network addresses. Local devices address packets to the router’s
MAC address in the MAC header. After receiving the packets, the router must perform the
1. Check the incoming packet for corruption, and remove the MAC header. The router
checks the packet for MAC-layer errors. The router then strips off the MAC header and
examines the network-layer header to determine what to do with the packet.
2. Examine the age of the packet. The router must ensure that the packet has not come too
far to be forwarded. For example, IPX headers contain a hop count. By default, 15 hops is
the maximum number of hops (or routers) that a packet can cross. If a packet has a hop
count of 15, the router discards the packet. IP headers contain a Time to Live (TTL) value.
Unlike the IPX hop count, which increments as the packet is forwarded through each
router, the IP TTL value decrements as the IP packet is forwarded through each router. If
an IP packet has a TTL value of 1, the router discards the packet. A router cannot
decrement the TTL value to 1 and then forward the packet.
3. Determine the route to the destination. Routers maintain a routing table that lists
available networks, the direction to the desired network (the outgoing interface number),
and the distance to those networks. After determining which direction to forward the packet,
the router must build a new header. (If you want to read the IP routing tables on a Windows
95/98 workstation, type ROUTE PRINT in the DOS box.)
4. Build the new MAC header and forward the packet. Finally, the router builds a new MAC
header for the packet. The MAC header includes the router’s MAC address and the final
destination’s MAC address or the MAC address of the next router in the path.
Question No : 3 DRAG DROP – (Topic 1)
Match the terms on the left with the appropriate OSI layer on the right. (Not all options are used.)
Question No : 4 – (Topic 1)
A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local
network. How can you accomplish this task, using the fewest physical interfaces and
without decreasing network performance?
A. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router.
B. Add a second router to handle the VLAN traffic.
C. Add two more Fast Ethernet interfaces.
D. Implement a router-on-a-stick configuration.
Question No : 5 – (Topic 1)
A router on a stick allows you to use sub-interfaces to create multiple logical networks on a
single physical interface.
Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.)
A. Spanning Tree Protocol allows switches to automatically share VLAN information.
B. Establishing VLANs increases the number of broadcast domains.
C. Switches that are configured with VLANs make forwarding decisions based on both
Layer 2 and Layer 3 address information.
D. Microsegmentation decreases the number of collisions on the network.
E. In a properly functioning network with redundant switched paths, each switched segment
will contain one root bridge with all its ports in the forwarding state. All other switches in
that broadcast domain will have only one root port.
F. If a switch receives a frame for an unknown destination, it uses ARP to resolve the
Microsegmentation is a network design (functionality) where each workstation or device on
a network gets its own dedicated segment (collision domain) to the switch. Each network
device gets the full bandwidth of the segment and does not have to share the segment with
other devices. Microsegmentation reduces and can even eliminate collisions because each
segment is its own collision domain ->.
Note: Microsegmentation decreases the number of collisions but it increases the number of
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