Question: 14
Which type of port would have root guard enabled on it
A. a designated port
B. an alternate port
C. a blocked port
D. a root port
Answer: A
Question: 15
Which two statements about MPLS label stack encoding are true?(Choose two)
A. MPLS label are encoded in little-endian format.
B. When an MPLS label stack undergoes the swap operation,it swaps the top and bottom labels.
C. When a device forwards a labeled packet.it must copy the TTL of the incoming label to the
D. outgoing label.
E. The TTL is significant only on the top label
F. When a device forwards a labeled packet,it must copy the TTL of the outgoing label to the top
label.4
Answer: C,D
Question: 16
Which PIM mode can forward traffic by using only (*.G) routing table entries?
A. Space-dese mode
B. Bidirectional mode
C. Deuce mode
D. Sparse mode
Answer: B
Wednesday, 19 July 2017
Sunday, 18 June 2017
Cisco 400-101 Real Exam Questions
Question: 10
Which three values can you use to configure an ERSPAN destination session? (Choose three.)
A. VLAN ID
B. source IP address
C. destination IP address
D. ID number
E. VRF
F. session name
Answer: B,D,E
Question: 11
Why is the router not accessible via Telnet on the GigabitEthernet0 management interface?
A. The wrong port is being used in the telnet-acl access list.
B. The subnet mask is incorrect in the telnet-acl access list.
C. The log keyword needs to be removed from the telnet-acl access list.
D. The access class needs to have the vrf-also keyword added.
Answer: D
Question: 12
You are installing a new device to replace a device that failed. The configuration of the failed device is stored on a networked server, and the new device has an RXBOOT image installed. Under which condition does the streamlined Setup mode fail?
A. The last four bits of the configuration register are not equal to the decimal value 0 or 1.
B. The startup configuration file was deleted.
C. Bit 6 is set in the configuration register.
D. The startup configuration is corrupt.
Answer: A
Question: 13
Which statement about the EIGRP RTO is true?
A. It is six times the SRTT.
B. It is the time that it normally takes for an update to be received by a peer.
C. It is the time that it normally takes to receive a reply to a query.
D. It is the average time that it takes for a reliable packet to be acknowledged.
Answer: A
Which three values can you use to configure an ERSPAN destination session? (Choose three.)
A. VLAN ID
B. source IP address
C. destination IP address
D. ID number
E. VRF
F. session name
Answer: B,D,E
Question: 11
Why is the router not accessible via Telnet on the GigabitEthernet0 management interface?
A. The wrong port is being used in the telnet-acl access list.
B. The subnet mask is incorrect in the telnet-acl access list.
C. The log keyword needs to be removed from the telnet-acl access list.
D. The access class needs to have the vrf-also keyword added.
Answer: D
Question: 12
You are installing a new device to replace a device that failed. The configuration of the failed device is stored on a networked server, and the new device has an RXBOOT image installed. Under which condition does the streamlined Setup mode fail?
A. The last four bits of the configuration register are not equal to the decimal value 0 or 1.
B. The startup configuration file was deleted.
C. Bit 6 is set in the configuration register.
D. The startup configuration is corrupt.
Answer: A
Question: 13
Which statement about the EIGRP RTO is true?
A. It is six times the SRTT.
B. It is the time that it normally takes for an update to be received by a peer.
C. It is the time that it normally takes to receive a reply to a query.
D. It is the average time that it takes for a reliable packet to be acknowledged.
Answer: A
Cisco 400-101 CCIE Routing and Switching Practice Exam
Wednesday, 3 May 2017
400-101 Real Exam Questions
Question: 5
Which two statements about MAC ACLs are true? (Choose two.)
A. They support only inbound filtering.
B. They support both inbound and outbound filtering.
C. They are configured with the command mac access-list standard.
D. They can filter non-IP traffic on a VLAN and on a physical interface.
Answer: A,D
Question: 6
What two values are required to implement an EIGRP named configuration? (Choose two.)
A. virtual-instance-name
B. address-family
C. router-id
D. subnet-mask
E. process-id
Answer: A,B
Question: 7
In which type of EIGRP configuration is EIGRP IPv6 VRF-Lite available?
A. stub
B. named mode
C. classic mode
D. passive
Answer: B
Question: 8
A network engineer is extending a LAN segment between two geographically separated data centers. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment?
A. Modify the spanning-tree priorities to dictate the traffic flow.
B. Create a Layer 3 transit VLAN to segment the traffic between the sites.
C. Use VTP pruning on the trunk interfaces.
D. Configure manual trunk pruning between the two locations.
Answer: C
Question: 9
What is the function of NSF?
A. forward traffic simultaneously using both supervisors
B. forward traffic based on Cisco Express Forwarding
C. provide automatic failover to back up supervisor in VSS mode
D. provide nonstop forwarding in the event of failure of one of the member supervisors
Answer: D
Which two statements about MAC ACLs are true? (Choose two.)
A. They support only inbound filtering.
B. They support both inbound and outbound filtering.
C. They are configured with the command mac access-list standard.
D. They can filter non-IP traffic on a VLAN and on a physical interface.
Answer: A,D
Question: 6
What two values are required to implement an EIGRP named configuration? (Choose two.)
A. virtual-instance-name
B. address-family
C. router-id
D. subnet-mask
E. process-id
Answer: A,B
Cisco Cisco 400-101 Study Guide PDF Free Download
Question: 7
In which type of EIGRP configuration is EIGRP IPv6 VRF-Lite available?
A. stub
B. named mode
C. classic mode
D. passive
Answer: B
Question: 8
A network engineer is extending a LAN segment between two geographically separated data centers. Which enhancement to a spanning-tree design prevents unnecessary traffic from crossing the extended LAN segment?
A. Modify the spanning-tree priorities to dictate the traffic flow.
B. Create a Layer 3 transit VLAN to segment the traffic between the sites.
C. Use VTP pruning on the trunk interfaces.
D. Configure manual trunk pruning between the two locations.
Answer: C
Question: 9
What is the function of NSF?
A. forward traffic simultaneously using both supervisors
B. forward traffic based on Cisco Express Forwarding
C. provide automatic failover to back up supervisor in VSS mode
D. provide nonstop forwarding in the event of failure of one of the member supervisors
Answer: D
Cisco 400-101 CCIE Routing and Switching Practice Exam
Friday, 7 April 2017
400-101 Sample Question
Question: 4
How many hash buckets does Cisco Express Forwarding use for load balancing?
A. 8
B. 16
C. 24
D. 32
Answer: B
How many hash buckets does Cisco Express Forwarding use for load balancing?
A. 8
B. 16
C. 24
D. 32
Answer: B
Tuesday, 7 March 2017
400-101 Sample Question
Question: 3
How many hash buckets does Cisco Express Forwarding use for load balancing?
A. 8
B. 16
C. 24
D. 32
Answer: B
How many hash buckets does Cisco Express Forwarding use for load balancing?
A. 8
B. 16
C. 24
D. 32
Answer: B
Sunday, 5 March 2017
400-101 Sample Question
Question: 2
Which statement describes the purpose of the Payload Type field in the RTP header?
A. It identifies the signaling protocol.
B. It identifies the codec.
C. It identifies the port numbers for RTP.
D. It identifies the port numbers for RTCP.
Answer: B
Explanation:
PT, Payload Type. 7 bits: Identifies the format of the RTP payload and determines its interpretation by the application. A profile specifies a default static mapping of payload type codes to payload formats. Additional payload type codes may be defined dynamically through non-RTP means. An RTP sender emits a single RTP payload type at any given time; this field is not intended for multiplexing separate media streams.
Which statement describes the purpose of the Payload Type field in the RTP header?
A. It identifies the signaling protocol.
B. It identifies the codec.
C. It identifies the port numbers for RTP.
D. It identifies the port numbers for RTCP.
Answer: B
Explanation:
PT, Payload Type. 7 bits: Identifies the format of the RTP payload and determines its interpretation by the application. A profile specifies a default static mapping of payload type codes to payload formats. Additional payload type codes may be defined dynamically through non-RTP means. An RTP sender emits a single RTP payload type at any given time; this field is not intended for multiplexing separate media streams.
Thursday, 16 February 2017
400-101 Sample Question
Question: 1
What is the cause of ignores and overruns on an interface, when the overall traffic rate of the interface is low?
A. a hardware failure of the interface
B. a software bug
C. a bad cable
D. microbursts of traffic
Answer: D
Explanation:
Micro-bursting is a phenomenon where rapid bursts of data packets are sent in quick succession, leading to periods of full line-rate transmission that can overflow packet buffers of the network stack, both in network endpoints and routers and switches inside the network. Symptoms of micro bursts will manifest in the form of ignores and/ or overruns (also shown as accumulated in “input error” counter within show interface output).
This is indicative of receive ring and corresponding packet buffer being overwhelmed due to data bursts coming in over extremely short period of time (microseconds). You will never see a sustained data traffic within show interface’s “input rate” counter as they are averaging bits per second (bps) over 5 minutes by default (way too long to account for microbursts). You can understand microbursts from a scenario where a 3-lane highway merging into a single lane at rush hour – the capacity burst cannot exceed the total available bandwidth (i.e. single lane), but it can saturate it for a period of time.
What is the cause of ignores and overruns on an interface, when the overall traffic rate of the interface is low?
A. a hardware failure of the interface
B. a software bug
C. a bad cable
D. microbursts of traffic
Answer: D
Explanation:
Micro-bursting is a phenomenon where rapid bursts of data packets are sent in quick succession, leading to periods of full line-rate transmission that can overflow packet buffers of the network stack, both in network endpoints and routers and switches inside the network. Symptoms of micro bursts will manifest in the form of ignores and/ or overruns (also shown as accumulated in “input error” counter within show interface output).
This is indicative of receive ring and corresponding packet buffer being overwhelmed due to data bursts coming in over extremely short period of time (microseconds). You will never see a sustained data traffic within show interface’s “input rate” counter as they are averaging bits per second (bps) over 5 minutes by default (way too long to account for microbursts). You can understand microbursts from a scenario where a 3-lane highway merging into a single lane at rush hour – the capacity burst cannot exceed the total available bandwidth (i.e. single lane), but it can saturate it for a period of time.
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