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JN0-643 PDF DEMO:
QUESTION NO: 1
Which three statements are correct about source specific multicast (SSM) on the junos
OS? (Choose three)
A. SSM requires the use of an RP
B. IT HAS AN DEDICATED address block
C. SSM does not require the use of an RP
D. SSM must use the232/8 address range
E. IGMPv2 and IGMPv3 can be used with SSM.
Answer: B,C,E
QUESTION NO: 2
-- Exhibit -
-- Exhibit --
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
A. Traffic destined for R2 will be blackholed.
B. Transit traffic will follow the R1-R2-R4 path.
C. Traffic destined for R2 will reach R2.
D. Transit traffic will follow the R1-R3-R4 path.
Answer: C,D
QUESTION NO: 3
-- Exhibit -
-- Exhibit --
Click the Exhibit button.
A customer is trying to configure a router to peer using EBGP to a neighbor. As shown in the exhibit, two links are being used for this configuration. The goal of this configuration is to load-balance traffic across both EBGP links.
Which configuration accomplishes this goal?
A. {master:0}[edit]
user@router# show protocols bgp
group External {
multihop;
local-address 192.168.2.1;
peer-as 65532;
neighbor 10.10.2.2;
neighbor 10.20.2.2;
}
{master:0}[edit]
user@router# show routing-options
static {
route 192.168.5.1/32 next-hop 192.168.2.1;
}
autonomous-system 65432;
B. {master:0}[edit]
user@router# show protocols bgp
group External {
multihop;
local-address 192.168.2.1;
peer-as 65532;
neighbor 192.168.5.1;
}
{master:0}[edit]
user@router# show routing-options
static {
route 192.168.5.1/32 next-hop [ 10.10.2.2 10.20.2.2 ];
}
autonomous-system 65432;
forwarding-table {
export load-balance;
}
{master:0}[edit]
user@router# show policy-options policy-statement load-balance
term balance {
then {
load-balance per-packet;
accept;
}
}
C. {master:0}[edit]
user@router# show protocols bgp
group External {
multi-path;
local-address 192.168.2.1;
peer-as 65532;
neighbor 192.168.5.1;
}
{master:0}[edit]
user@router# show routing-options
static {
route 192.168.5.1/32 next-hop [ 10.10.2.2 10.20.2.2 ];
}
autonomous-system 65432;
D. {master:0}[edit]
user@router# show protocols bgp
group External {
multipath;
local-address 192.168.2.1;
peer-as 65532;
neighbor 10.10.2.2;
neighbor 10.20.2.2;
}
{master:0}[edit]
user@router# show routing-options
static {
route 192.168.5.1/32 next-hop 192.168.2.1;
}
autonomous-system 65432;
Answer: B
QUESTION NO: 4
-- Exhibit -
-- Exhibit --
Click the Exhibit button.
In the exhibit, Host2 is the only host currently joining group 231.1.1.1, but S1 is still flooding the traffic to all hosts on VLAN 100.
What feature can be configured on S1 to limit the multicast flooding of traffic to only interested hosts on VLAN 100?
A. Multicast scoping
B. IGMP snooping
C. Multicast VLAN registration
D. IGMP immediate leave
Answer: B
QUESTION NO: 5
-- Exhibit -
-- Exhibit --
Click the Exhibit button.
In the exhibit, the provider bridges are using Q-in-Q tunneling to tunnel VLAN 100 traffic over VLAN
200.
What is the correct VLAN configuration for Q-in-Q tunneling on Provider Bridge A?
A. interfaces {
ge-0/0/0 {
unit 0 {
family ethernet-switching {
port-mode access;
}
}
}
ge-0/0/10 {
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members test;
}
}
}
}
}
vlans {
test {
vlan-id 200;
interface {
ge-0/0/0.0;
}
dot1q-tunneling {
customer-vlans 100;
}
}
}
B. interfaces {
ge-0/0/0 {
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members test;
}
}
}
}
ge-0/0/10 {
unit 0 {
family ethernet-switching {
port-mode access;
}
}
}
}
vlans {
test {
vlan-id 200;
interface {
ge-0/0/0.0;
}
dot1q-tunneling {
customer-vlans 100;
}
}
}
C. interfaces {
ge-0/0/0 {
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members test;
}
}
}
}
ge-0/0/10 {
unit 0 {
family ethernet-switching {
port-mode access;
}
}
}
}
vlans {
test {
vlan-id 200;
interface {
ge-0/0/10.0;
}
dot1q-tunneling {
customer-vlans 100;
}
}
}
D. interfaces {
ge-0/0/0 {
unit 0 {
family ethernet-switching {
port-mode access;
}
}
}
ge-0/0/10 {
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members test;
}
}
}
}
}
vlans {
test {
vlan-id 100;
interface {
ge-0/0/0.0;
}
dot1q-tunneling {
customer-vlans 200;
}
}
}
Answer: A
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Updated: May 28, 2022