We have each of the necessary Cisco 400-101 practice questions along with answers which are closely equal for the Cisco 400-101 actual exam. The Cisco Cisco exam dumps are compiled and verified via multiple times. All of the Cisco 400-101 exam syllabuses are incorporated in our 400-101 merchandise. The type of Cisco practice questions will be the same because real Cisco 400-101 exam, which is multiple choice which makes you as if on the actual test day time.

2021 Mar 400-101 vce

Q161. Which two statements about the C-bit and PW type are true? (Choose two.) 

A. The C-bit is 1 byte and the PW type is 15 bytes. 

B. The PW type indicates the type of pseudowire. 

C. The C-bit is 3 bits and the PW type is 10 bits. 

D. The C-bit set to 1 indicates a control word is present. 

E. The PW type indicates the encryption type. 

Answer: B,D 

Explanation: 

The control word carries generic and Layer 2 payload-specific information. If the C-bit is set to 1, the advertising PE expects the control word to be present in every pseudowire packet on the pseudowire that is being signaled. If the C-bit is set to 0, no control word is expected to be present. Pseudowire Type—PW Type is a 15-bit field that represents the type of pseudowire. 

Reference: http://www.ciscopress.com/articles/article.asp?p=386788&seqNum=2 


Q162. DRAG DROP 

Drag and drop the RIP configuration command on the left to the function it performs on the right. 

Answer: 


Q163. Refer to the exhibit. 

Which command is configured on this router? 

A. bgp update-delay 60 

B. neighbor 10.100.1.1 maximum-prefix 200 

C. neighbor 10.100.1.1 maximum-path 2 

D. neighbor 10.100.1.1 ebgp-multihop 2 

Answer: B 

Explanation: 

The BGP Maximum-Prefix feature allows you to control how many prefixes can be received from a neighbor. By default, this feature allows a router to bring down a peer when the number of received prefixes from that peer exceeds the configured Maximum-Prefix limit. This feature is commonly used for external BGP peers, but can be applied to internal BGP peers also. When the maximum number of prefixes has been received, the BGP sessions closes into the IDLE state. 

Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/25160-bgp-maximum-prefix.html 


Q164. DRAG DROP 

Drag and drop each IPv6 neighbor discovery message type on the left to the corresponding description on the right. 

Answer: 


Q165. Refer to the exhibit. 

If the route to 10.1.1.1 is removed from the R2 routing table, which server becomes the master NTP server? 

A. R2 

B. the NTP server at 10.3.3.3 

C. the NTP server at 10.4.4.4 

D. the NTP server with the lowest stratum number 

Answer: D 

Explanation: 

NTP uses a concept called “stratum” that defines how many NTP hops away a device is from an authoritative time source. For example, a device with stratum 1 is a very accurate device and might have an atomic clock attached to it. Another NTP server that is using this stratum 1 server to sync its own time would be a stratum 2 device because it’s one NTP hop further away from the source. When you configure multiple NTP servers, the client will prefer the NTP server with the lowest stratum value. 

Reference: https://networklessons.com/network-services/cisco-network-time-protocol-ntp/ 


Refresh 400-101 actual exam:

Q166. Which option is a correct match criterion for policy-based routing? 

A. length 

B. interface type 

C. interface 

D. cost 

Answer: A 


Q167. Which three components comprise the structure of a pseudowire FEC element? (Choose three.) 

A. pseudowire ID 

B. pseudowire type 

C. control word 

D. Layer 3 PDU 

E. header checksum 

F. type of service 

Answer: A,B,C 

Explanation: 

The Pseudowire ID FEC element has the following components: 

. Pseudowire ID FEC — The first octet has a value of 128 that identifies it as a Pseudowire ID FEC element. 

. Control Word Bit (C-Bit) — The C-bit indicates whether the advertising PE expects the control word to be present for pseudowire packets. A control word is an optional 4-byte field located between the MPLS label stack and the Layer 2 payload in the pseudowire packet. The control word carries generic and Layer 2 payload-specific information. If the C-bit is set to 1, the advertising PE expects the control word to be present in every pseudowire packet on the pseudowire that is being signaled. If the C-bit is set to 0, no control word is expected to be present. 

. Pseudowire Type — PW Type is a 15-bit field that represents the type of pseudowire. Examples of pseudowire types are shown in Table 6-1. 

. Pseudowire Information Length — Pseudowire Information Length is the length of the Pseudowire ID field and the interface parameters in octets. When the length is set to 0, this FEC element stands for all pseudowires using the specified Group ID. The Pseudowire ID and Interface Parameters fields are not present. 

. Group ID — The Group ID field is a 32-bit arbitrary value that is assigned to a group of pseudowires. 

. Pseudowire ID — The Pseudowire ID, also known as VC ID, is a non-zero, 32-bit identifier that distinguishes one pseudowire from another. To connect two attachment circuits through a pseudowire, you need to associate each one with the same Pseudowire ID. 

. Interface Parameters — The variable-length Interface Parameters field provides attachment circuit-specific information, such as interface MTU, maximum number of concatenated ATM cells, interface description, and so on. 

Reference: http://www.ciscopress.com/articles/article.asp?p=386788&seqNum=2 


Q168. What are the three variants of NTPv4? (Choose three.) 

A. client/server 

B. broadcast 

C. symmetric 

D. multicast 

E. asymmetric 

F. unicast 

Answer: A,B,C 


Q169. Which command enables L2 QoS support in all VLANs (including the native VLAN)? 

A. switchport priority extend cos 

B. mls qos trust dscp 

C. mls qos rewrite ip dscp 

D. switchport trunk native vlan tag 

Answer: D 

Explanation: 

You can enter the switchport trunk native vlan tag command to enable the tagging of native VLAN traffic on a per-port basis. When tagging is enabled, all the packets on the native VLAN are tagged and all incoming untagged data packets are dropped, but untagged control packets are accepted. When tagging is enabled, it will allow for L2 QoS support in all VLANs, including the native VLAN. 


Q170. Refer to the exhibit. 

If EIGRP is configured between two routers as shown in this output, which statement about their EIGRP relationship is true? 

A. The routers will establish an EIGRP relationship successfully. 

B. The routers are using different authentication key-strings. 

C. The reliability metric is enabled. 

D. The delay metric is disabled. 

Answer: C 

Explanation: 

The 5 K values used in EIGRP are: 

K1 = Bandwidth modifier 

K2 = Load modifier 

K3 = Delay modifier 

K4 = Reliability modifier 

K5 = Additional Reliability modifier 

However, by default, only K1 and K3 are used (bandwidth and delay). In this output we see that K1, K3, and K4 (Reliability) are all set.