Cisco 400-101 Online Practice Questions and Exam Preparation

Cisco 400-101 Online Questions & Answers

• Question 231:

  What are IPv6 addresses of the form fc00::/7 known as?

  A. link-local addresses
  B. unique local addresses
  C. multicast RP addresses
  D. transition addresses for 6to4
  B. unique local addresses

• Question 232:

  What are two general SDN characteristics? (Choose two) A. Northbound interfaces are open interfaces used between the control plane and the data plane

  B. OpenFlow is considered one of the first Northbound APIs used by SDN controllers.
  C. The separation of the control plane from the data plane
  D. Southbound interfaces are interfaces used between use control plane and the data plane
  E. OVSDB is an application database management protocol
  C. The separation of the control plane from the data plane
  D. Southbound interfaces are interfaces used between use control plane and the data plane

• Question 233:

  Which IGMP filter precedence or hierarchy is applied when different access mode filters exist at the port and SVI level?

  A. If the SVI filter exists, it overrides the port filter.
  B. IGMP filters cannot be configured at the port and the SVI level.
  C. If the port filter exists, it is applied and the SVI filter is ignored.
  D. IGMP filters can be configured at the port and the SVI level, but they must match.
  C. If the port filter exists, it is applied and the SVI filter is ignored.

• Question 234:

  Which statement about NAT64 is true?

  A. NAT64 provides address family translation and translates IPv4 to IPv6 and IPv6 to IPv4
  B. NAT64 provides address family translation and can translate only IPv6 to IPv4.
  C. NAT64 should be considered as a permanent solution
  D. NAT64 requires the use of DNS64.
  A. NAT64 provides address family translation and translates IPv4 to IPv6 and IPv6 to IPv4

• Question 235:

  On a network using DiffServ, which option refers to the actions that applied to a packet as it moves through the network?

  A. DSCP
  B. PHB
  C. Code-point
  D. IP-precedence
  A. DSCP

• Question 236:

  DRAG DROP

  Drag and drop the SDN terms from the left onto their corresponding use case on the right.

  Select and Place:

  

  

• Question 237:

  You have been asked to connect a remote network with different DSCP mappings to the primary network of your organization. How can you configure the network devices so that the two networks work together seamlessly?

  A. Configure the mls qos trust command on the trunk ports that internetwork two networks
  B. Configure VLAN-based QoS on all switchs on both networks
  C. Configure an aggregate policewr on the ingres interfaces of the trunk ports that interconnect the two networks
  D. Configure a mutation map on the devices on the primary network that connect to the network
  A. Configure the mls qos trust command on the trunk ports that internetwork two networks

• Question 238:

  A 1Gbps router interface to a nearby data center is showing tehs of thousands of egress drops per day. The round trip time is 2ms and the average packet size is 1000 bytes. An analysis shows that the traffic is TCP-based business application traffic.All traffic is import, so GuS won't help. You decide to increase egress buffers, keeping in mind that the TCP retransmit timer is 2" SRTT. What is the maximum amount of buffering that can be used to reduce the impact on the applications without impacting application throughput?

  A. Increase the number of buffers until the drops decreases to an acceptable level.
  B. Increase the number of buffers to hold the amount of data in the TCP retransmit timer, (2 times the SRTT or 4ms) of data at 1Gbps (500 packets).
  C. The default number of buffers is sufficient,the network is performing as it should.
  D. Increase the number of buffers to hold the amount of data in the Bandwidth Delay Product (BDP) ,or 2ms of data at 1 Gbps (250 packets).
  B. Increase the number of buffers to hold the amount of data in the TCP retransmit timer, (2 times the SRTT or 4ms) of data at 1Gbps (500 packets).

• Question 239:

  Which keychain cryptographic algorithm is supported by the IS-IS routing protocol?

  A. HMAC-SHA1-20
  B. MD5
  C. HMAC-SHA1-12
  D. HMAC-MD5
  D. HMAC-MD5

• Question 240:

  Which two statements about VTPv3 are true? (Choose two)

  A. VTPv3 accepts configuration information only from VTPv2 devices.
  B. VTPv3 must receive VTPv2 packets before it can send VTPv2 packets.
  C. VTPv3 sends VTPv2 packets when they are detected on a trunk port.
  D. VTPv3 regions can communicate in server mode only over a VTPv2 region.
  E. Extended VLANs prevent VTPv3 switches from becoming VTPv2
  B. VTPv3 must receive VTPv2 packets before it can send VTPv2 packets.
  E. Extended VLANs prevent VTPv3 switches from becoming VTPv2