Exam 200-301 All QuestionsBrowse all questions from this exam
Go to Exam
Question 1337

SIMULATION

-

Guidelines

-

This is a lab item in which tasks will be performed on virtual devices

• Refer to the Tasks tab to view the tasks for this lab item.

• Refer to the Topology tab to access the device console(s) and perform the tasks.

• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.

• All necessary preconfigurations have been applied.

• Do not change the enable password or hostname for any device.

• Save your configurations to NVRAM before moving to the next item.

• Click Next at the bottom of the screen to submit this lab and move to the next question.

• When Next is clicked the lab closes and cannot be reopened.

Topology

-

Tasks

-

All physical cabling is in place. A company plans to deploy 64 new sites. The sites will utilize both IPv4 and IPv6 networks.

1. Subnet 10.30.64.0/19 to meet the subnet requirements and maximize the number of hosts

• Using the second subnet

- Assign the first usable IP address to e0/0 on Sw101

- Assign the last usable IP address to e0/0 on Sw102

2. Subnet 2001:db8::/56 to meet the subnet requirements and maximize the number of hosts

• Using the second subnet

- Assign an IPv6 GUA using a unique 64-Bit interface identifier on e0/0 on Sw101

- Assign an IPv6 GUA using a unique 64-Bit interface identifier on e0/0 on Sw102

    Correct Answer:

Discussion
d5c03de

[ ] = Bianary representation 2001:0db8:0000:[0000 0000 xxxx xx00]::/62 where x -> subnet bits 2001:0db8:0000:[0000 0000 0000 0000]::/62 second subnet = 2001:0db8:0000:[0000 0000 0000 0100]::/62 Back to hex = 2001:0db8:0000:0004::/62 = 2001:db8:0:4::/62 Sw101(config)#ip routing Sw101(config)#ipv6 unicast-routing Sw101(config)#int e0/0 Sw101(config-if)#no switchport Sw101(config-if)#ip address 10.30.64.129 255.255.255.128 Sw101(config-if)#ipv6 2001:db88:0:4::/62 eui-64 Sw101(config-if)#no shutdown Sw102(config)#ip routing Sw102(config)#ipv6 unicast-routing Sw102(config)#int e0/0 Sw102(config-if)#no switchport Sw102(config-if)#ip address 10.30.64.254 255.255.255.128 Sw102(config-if)#ipv6 2001:db88:0:4::/62 eui-64 Sw102(config-if)#no shutdown write memory

d5c03de

Correction Sw101 and 102 Ipv6 address is "2001:db8:0:4::/62 eui-64"

tumajay

pls why use /62 for the ipv6

OuaisLeSang

we have a /56 and we must divide it into 64 equal network 64 = 2^6 we can have 64 equal network by using a /62 cuz 56+6 = 62

tumajay

correct!!

86a50a6

My opinion: Switch-1 interface E0/0 ip address 10.30.64.129 255.255.255.128 Ipv6: 2001:db8:0:6::/62 eui-64 Switch-2 interface E0/0 ip address 10.30.64.254 255.255.255.128 ipv6: 2001:db8:0:6::/62 eui-64

tumajay

i think this is the correct answer. Since we have 64 sites and subnet / 19 to maximise, 64 is 2^6, so add 6 to 19 to get /25 for each subnet. that will give 128 host for 64 sites with 10.30.64.0/25 as first subnet and 10.30.95.128/25 as last subnet

tumajay

the ipv6 part is wrong

ulra

Correct Answer SW101 enable config t inter e0/0 ip add 10.30.64.129 255.255.255.128 ipv6 add 2001:db8:0:04::1/62 no shut copy runn SW102 enable config t interf e0/0 ip add 10.30.64.254 255.255.128 ipv6 add 2001:db8::7:ffff:ffff:ffff:ffff/62 no shut copy runn Nota: la ultima ip usable termina en FFFF, porque IpV6 No tiene broadcast

turnernator1p

this is incorrect. You didnt even use "no switchport" command.

Bugmenot240411

here's my answer and tutorial: numbers in the brackets is binary convert to IPv4 binary 10.30.[010] need 6 bits to contain 64 sites, this also is first subnet 10.30.[010|00000].[0] so new mask is 255.255.255.128, then add 1 in last bit of the mask 10.30.[010|00000].[1] add 1 in host bit and convert to decimal, you have first usable IP address 10.30.64.129 last usable IP address is 10.30.64.254

Bugmenot240411

mask is 56, 56=4*14, so there's 14 hex as mask 2001:0db8:0000:00 need 6 bits to contain 64 sites, this also is first subnet 2001:0db8:0000:00[0000][00] so new mask is 62, 62=4*15+2, then add 1 in last bit of the mask 2001:0db8:0000:00[0000][01] convert to hex 2001:0db8:0000:0004::/62 SW101 ip routing ipv6 unicast-routing interface e0/0 no switchport ip address 10.30.64.129 255.255.255.128 Ipv6: 2001:db8:0:4::/62 eui-64 no shut copy run sta SW102 ip routing ipv6 unicast-routing interface e0/0 no switchport ip address 10.30.64.254 255.255.255.128 ipv6: 2001:db8:0:4::/62 eui-64 no shut copy run sta

lmmujsi

IPv4: Use /26 for 64 sites, assign 10.30.64.65 to Sw101, 10.30.64.126 to Sw102. IPv6: Use 2001:DB8:0:1::/64, enable EUI-64 on both switches. put the switchport in layer3 mode: For Sw101: interface Ethernet0/0 no switchport ip address 10.30.64.65 255.255.255.192 ipv6 address 2001:DB8:0:1::/64 eui-64 no shutdown For Sw102: interface Ethernet0/0 no switchport ip address 10.30.64.126 255.255.255.192 ipv6 address 2001:DB8:0:1::/64 eui-64 no shutdown

lmmujsi

For Sw101: interface Ethernet0/0 no switchport ip address 10.30.64.65 255.255.255.192 ipv6 address 2001:DB8:0:1::/64 eui-64 no shutdown For Sw102: interface Ethernet0/0 no switchport ip address 10.30.64.126 255.255.255.192 ipv6 address 2001:DB8:0:1::/64 eui-64 no shutdown