Cisco CCNA 200-301 Questions & Answers

• Question 421:

  Refer to the exhibit.

  

  Which two commands when used together create port channel 10? (Choose two.)

  A. int range g0/0-1 channel-group 10 mode active

  B. int range g0/0-1 chanm.l-group 10 mode desirable

  C. int range g0/0-1 channel-group 10 mode passive

  D. int range g0/0-1 channel-group 10 mode auto

  E. int range g0/0-1 channel-group 10 mode on

  Correct Answer: AC

  The command output given is only for one side of the Etherchannel on the Switch in question (we are not given the details of the other switch, do we have to assume that the other switch ends with the same interfaces and the same Channel-group?) , so option A :" mode Active" ensures that the switch will take the initiative and tries to form the channel. Surely it will result in success as the other end has one of 2 options (active or passive). Of course, assuming that the other end on the other switch is not incorrectly reconfigured using PAgP options (auto/desirable) or the no protocol option (mode on). Theses case results in that the channel is not formed.

  For Choice C, it does not guarantee Ether-Channel formation as long as we don't have information about which mode the other end is being configured (if Active, channel is formed, if passive, channel is not formed).

  Requiring 2 answers without having information about the other end is not correct

  Also, if the 2 has to be used yogether (on the same switch) the second one will replace the first.

• Question 422:

  Refer to the exhibit

  

  Routers R1 and R2 have been configured with their respective LAN interfaces The two circuits are operational and reachable across WAN.

  Which command set establishes fail over redundancy if the primary circuit goes down?

  A. R1(config)#ip route 0.0.0.0 0.0.0.0 10.10.10.6 R2(config)#ip route 0.0.0.0 0.0.0.0 10.10.10.5

  B. R1(config)#ip route 10.10.13.10 255.255.255.255 10.10.10.2 R2(config)#ip route 192.168.0.100 255.255.255.255 10.10.10.1

  C. R1(config)#ip route 10.10.13.10 255.255.255.255 10.10.10.6 R2(config)#ip route 192.168.0.100 255.255.255.255 10.10.10.5

  D. R1(config)#ip route 0.0.0.0 0.0.0.0 10.10.10.6 2 R2(config)#ip route 0.0.0.0 0.0.0.0 10.10.10.5 2

  Correct Answer: D

• Question 423:

  Refer to the exhibit Which switch becomes the root of a spanning tree for VLAN 10 if the primary switch fails and all links are of equal speed?

  

  A. CB-SW1 = 24596 0018.184e.3c00

  B. CB-SW2 = 28962 004a.14e5.4077

  C. CB-SW3 = 32788 0022.55cf.dd00

  D. CB-SW4 = 64000 0041.454d.407f

  Correct Answer: C

  The question says if a primary fails. According to the table primary is CB-SW1 which has the lowest priority, followed by CB-SW3 which has the second lowest priority making it secondary.

• Question 424:

  Refer to Exhibit.

  

  Which action do the switches take on the trunk link?

  A. The trunk does not form and the ports go into an err-disabled status.

  B. The trunk forms but the mismatched native VLANs are merged into a single broadcast domain.

  C. The trunk does not form, but VLAN 99 and VLAN 999 are allowed to traverse the link.

  D. The trunk forms but VLAN 99 and VLAN 999 are in a shutdown state.

  Correct Answer: B

  The trunk still forms with mismatched native VLANs and the traffic can actually flow between mismatched switches. But it is absolutely necessary that the native VLANs on both ends of a trunk link match; otherwise a native VLAN mismatch occurs, causing the two VLANs to effectively merge.

  For example with the above configuration, SW1 would send untagged frames for VLAN 999. SW2 receives them but would think they are for VLAN 99 so we can say these two VLANs are merged.

• Question 425:

  Refer to the exhibit. The following must be considered:

  1.

  SW1 is fully configured for all traffic

  2.

  The SW4 and SW9 links to SW1 have been configured

  3.

  The SW4 interface Gi0/1 and Gi0/0 on SW9 have been configured

  4.

  The remaining switches have had all VLANs added to their VLAN database.

  Which configuration establishes a successful ping from PC2 to PC7 without interruption to traffic flow between other PCs?

  

  A. SW4 interface Gi0/7 switchport mode trunk switchport trunk allowed vlan 108 ! interface Gi/0/2 switchport mode access switchport access vlan 14

  SW11 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14,108 ! interface Gi0/1 switchport mode trunk switchport trunk allowed vlan 14,108

  SW9#

  interface Gi0/2

  switchport mode access

  switchport access vlan 14

  B. SW4 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14,108

  SW11#

  interface Gi0/2

  switchport mode trunk

  switchport trunk allowed vlan 14,108

  !!

  interface Gi0/1

  switchport mode trunk

  switchport trunk allowed vlan 14,108

  SW9#

  interface Gi0/2

  switchport mode trunk

  switchport trunk allowed vlan 14

  C. SW4 interface Gi0/2 switchport mode trunk switchport trunk allowed vlan 14

  SW11#

  interface Gi0/1

  switchport mode trunk

  switchport trunk allowed vlan 14

  SW9#

  interface Gi0/2

  switchport mode trunk

  switchport trunk allowed vlan 108

  D. SW4 interface Gi/0/2 switchport mode access switchport access vlan 14

  SW11#

  interface Gi0/2

  switchport mode trunk

  switchport trunk allowed vlan 14

  !

  interface Gi0/0

  switchport mode access

  switchport access vlan 14

  !

  interface Gi0/1

  switchport mode trunk

  SW9#

  interface Gi0/2

  switchport mode access

  switchport access vlan 14

  Correct Answer: B

• Question 426:

  Refer to the exhibit.

  

  The network administrator must prevent the switch CertBus-Cat9K-2 IP address from being visible in LLDP without disabling the protocol. Which action must be taken must be taken to complete the task?

  A. Configure the no lldp tlv-select-management-address command globally on CertBus-Cat9K-2

  B. Configure the no lldp transmit command on interface G1/0/21 in CertBus-Cat9K-1

  C. Configure the no lldp receive command on interface G1/0/21 on CertBus-Cat9K-1

  D. Configure the no lldp mac-phy-cfg command globally on CertBus-Cat9K-2

  Correct Answer: A

  This example shows how to enable LLDP to send or receive IPv4 management address TLVs: switch# configure terminal switch(config)# lldp tlv-select management-address v4

  Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/layer2/602_U1_1/b_Cisco_n3k_Layer_2_Switching_Config_602_u1_1/b_Cisco_n3k_Layer_2_Switching_Config_602_u1_1_chapter_01001.pdf

• Question 427:

  Which step in the link-state routing process is described by a router sending Hello packets out all of the OSPF- enabled interfaces?

  A. electing the designated router

  B. establishing neighbor adjacencies

  C. injecting the default route

  D. exchanging link-state advertisements

  Correct Answer: B

• Question 428:

  Refer to the exhibit.

  CertBus-R1# show ip route

  

  What is the next hop for traffic entering CertBus-R1 with a destination of 10.1.2 126?

  A. 10.165 20.126

  B. 10.165.20.146

  C. 10.165.20.166

  D. 10.165 20.226

  Correct Answer: D

• Question 429:

  Which set of 2.4 GHz nonoverlapping wireless channels is standard in the United States?

  A. channels 2, 7, 9, and 11

  B. channels 1, 6, 11, and 14

  C. channels 2, 7, and 11

  D. channels 1, 6, and 11

  Correct Answer: D

  In the United States, while channels 1-13 can be used for 2.4 GHz WiFi, only three channels are considered non-overlapping (channels 12 and 13 are allowed under low powered conditions, but for most cases are not used). For best results, it is highly recommended to keep the 2.4 GHz channels to 1, 6, and 11, as these channel settings will allow for virtually no overlap in the WiFi signal. Shown below is a channel graph from WiFi Scanner showing three access points configured for channels 1, 6, and 11. As you can see, the center of each signal is at 1, 6, and 11 with the actual signal extending over several channels to the left and right.

• Question 430:

  Refer to the exhibit.

  Which two configurations would be used to create and apply a standard access list on R1, so that only the 10.0.70.0/25 network devices are allowed to access the internal database server? (Choose two)

  

  A. R1(config)# interface GigabitEthernet0/0 R1(config-if)# ip access-group 5 out

  B. R1(config)# access-list 5 permit 10.0.54.0 0.0.1.255

  C. R1(config)# interface Serial0/0/0 R1(config-if)# ip access-group 5 in

  D. R1(config)# access-list 5 permit 10.0.70.0 0.0.0.127

  E. R1(config)# access-list 5 permit any

  Correct Answer: AD