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New Cisco 200-125 Exam Dumps Collection (Question 16 - Question 24)

Q1. Which two steps must you perform to enable router-on-a-stick on a switch? (Choose two.)

A. Configure an IP route to the VLAN destination network.

B. Connect the Router to a trunk port.

C. Configure full duplex.

D. Configure the subinterface number exactly the same as the matching VLAN.

E. Assign the access port to a VLAN.

Answer: B,C

Q2. When is the most appropriate time to escalate an issue that you are troubleshooting?

A. when you lack proper resources to resolve the issue

B. when you have gathered all available information about the issue

C. when you have been unable to resolve the issue after 30 minutes

D. when a more urgent issue that requires your intervention is detected

Answer: B

Q3. Which feature builds a FIB and an adjacency table to expedite packet forwarding?

A. Cisco Express Forwarding

B. process switching

C. fast switching

D. cut-through

Answer: A

Q4. In which three ways is an IPv6 header simpler than an IPv4 header? (Choose three.)

A. Unlike IPv4 headers, IPv6 headers have a fixed length.

B. IPv6 uses an extension header instead of the IPv4 Fragmentation field.

C. IPv6 headers eliminate the IPv4 Checksum field.

D. IPv6 headers use the Fragment Offset field in place of the IPv4 Fragmentation field.

E. IPv6 headers use a smaller Option field size than IPv4 headers.

F. IPv6 headers use a 4-bit TTL field, and IPv4 headers use an 8-bit TTL field.

Answer: A,B,C

Q5. When a router makes a routing decision for a packet that is received from one network and destined to another, which portion of the packet does if replace?

A. Layer 2 frame header and trailer

B. Layer 3 IP address

C. Layer 5 session

D. Layer 4 protocol

Answer: A


Router Switching Function (

A primary function of a router is to forward packets toward their destination. This is accomplished by using a switching function, which is the process used by a router to accept a packet on one interface and forward it out of another interface. A key responsibility of the switching function is to encapsulate packets in the appropriate data link frame type for the outgoing data link.


In this context, the term u201cswitchingu201d literally means moving packets from source to destination and should not be confused with the function of a Layer 2 switch.

After the router has determined the exit interface using the path determination function, the router must encapsulate the packet into the data link frame of the outgoing interface.

What does a router do with a packet received from one network and destined for another network? The router performs the following three major steps:

u2711 Step 1.De-encapsulates the Layer 3 packet by removing the Layer 2 frame header

and trailer.

u2711 Step 2.Examines the destination IP address of the IP packet to find the best path in the routing table.

u2711 Step 3.If the router finds a path to the destination, it encapsulates the Layer 3 packet into a new Layer 2 frame and forwards the frame out the exit interface.

Q6. What is the first step in the NAT configuration process?

A. Define inside and outside interfaces.

B. Define public and private IP addresses.

C. Define IP address pools.

D. Define global and local interfaces.

Answer: A

Q7. Which command can you enter to configure a local username with an encrypted password and EXEC mode user privileges?

A. Router(config)#username jdone privilege 1 password 7 08314D5D1A48

B. Router(config)#username jdone privilege 1 password 7 PASSWORD1

C. Router(config)#username jdone privilege 15 password 0 08314D5D1A48

D. Router(config)#username jdone privilege 15 password 0 PASSWORD1

Answer: A

Q8. Which IPv6 header field is equivalent to the TTL?

A. Hop Limit

B. Flow Label


D. Hop Count

E. Scan Timer

Answer: A

Q9. Which device allows users to connect to the network using a single or double radio?

A. access point

B. switch

C. wireless controller

D. firewall

Answer: A

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