[2017-Oct.-New]100% Real JN0-643 Exam PDF Free Download in Braindump2go[11-20]

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QUESTION 11
Referring to the exhibit, you must ensure that traffic to the 2001:10:5::/64 network leaves AS 2 through R3.
 
Given that all BGP attributes are at their default, how would you accomplish this task?

A.    On R1, configure a MED of 50 for the 2001:10:5::/64 route.
B.    On R2, configure a MED of 50 for the 2001:10:5::/64 route.
C.    On R3, configure a MED of 50 for the 2001:10:5::/64 route.
D.    On R4, configure a MED of 50 for the 2001:10:5::/64 route.

Answer: B

QUESTION 12
On AS1, which two attributes are used to influence inbound traffic from the other ASs shown in the exhibit? (Choose two.)
 

A.    AS path
B.    MED
C.    local preference
D.    origin

Answer: AD

QUESTION 13
Referring to the exhibit, R2 is sending a route to R1 with a community value.
 
Which statement is correct?

A.    Routes will be accepted without change in the attributes.
B.    All routes will be rejected.
C.    Routes will be accepted with the community value removed.
D.    Routes will be rejected with the community value removed.

Answer: C

QUESTION 14
Which set of BGP attributes is preferred by the Junos OS?

A.    MED. 100
AS path: 50 50 50
Local preferencE. 50
Origin: I
B.    MED. 50
AS path: 50 50 50
Local preferencE. 1
Origin: E
C.    MED. 100
AS path: 50 50 50 50
Local preferencE. 50
Origin: I
D.    MED. 50
AS path: 50 50 50
Local preferencE. 50
Origin: E

Answer: A

QUESTION 15
Referring to the exhibit and based on the output below from Sw-1 and Sw-2, which statement is true?
Sw-1> show spanning-tree mstp configuration
MSTP information
Context identifier : 0
Region name : juniper
Revision : 1
Configuration digest : 0x9357ebb7a8d74dd5fef4f2bab50531aa
MSTI Member VLANs
0 0-9,11-19,21-4094
1 10
2 20
Sw-2# run show spanning-tree mstp configuration
MSTP information
Context identifier : 0
Region name : juniper
Revision : 1
Configuration digest : 0x387b5f2ea2394b14e091f0921ee7b9a8
MSTI Member VLANs
0 0-9,11-14,16-19,21-4094
1 10,15
2 20

A.    There will be only one MSTI 2 root bridge.
B.    There will be only one CST root bridge.
C.    Sw-1 and Sw-2 are in different MSTP regions.
D.    There will be only one CIST root bridge.

Answer: C

QUESTION 16
R4 receives BGP prefixes for AS 50 from both R2 and R3. You want to ensure that R4 chooses R3 as the preferred path to reach 50.50.50/24.
 
Referring to the information shown in the exhibit, where would you apply a policy containing the parameter local-preference 110 to accomplish this task?

A.    on R3, as import from R1
B.    on R3, as export towards R4
C.    on R2, as import from R1
D.    on R2, as export towards R4

Answer: D

QUESTION 17
You want to provide reachability to your data center by advertising its subnet throughout your upstream peer AS. However, you do not want this prefix advertised any further.
Which BGP community value would be used to meet this requirement?

A.    no-advertise
B.    no-export
C.    no-export-subconfed
D.    65512 – 65535

Answer: B

QUESTION 18
Referring to the exhibit, you want router A to have an EBGP peering with router C. They are both connected through router B, which does not have BGP running, and has static routes configured.
 
What must be configured in the EBGP peer groups on routers A and C to make this connection possible?

A.    MED
B.    multihop
C.    multipath
D.    next-hop

Answer: B

QUESTION 19
You are configuring PIM-SM for your network, and want to use a statically configured RP.
What are two ways to accomplish this task? (Choose two.)

A.    [edit protocols pim]
uesr@router# show
rp {
static {
address 10.10.10. ;
}
}
interface ge-0/0/0.0 {
mode sparse;
}
interface ge-0/0/5.0 {
mode sparse;
}
interface lo0.0 {
mode sparse;
}
B.    [edit protocols pim]
user@router# show
rp {
local {
address 223.0.0.1;
}
}
interface ge-0/0/0.0;
interface ge-0/0/5.0;
interface lo0.0;
C.    [edit protocols pim]
user@router# show
rp {
static {
address 10.10.10. {
group-ranges {
224.0.0.0/4;
}
}
}
}
interface all {
mode sparse;
}
D.    [edit protocols pim]
user@router# show
rp {
local {
address 10.10.10. ;
group-ranges {
233.0.0.0/8;
}
}
}
interface ge-0/0/0.0 {
version 1;
}
interface ge-0/0/5.0 {
version 1;
}
interface lo0.0 {
version 1;
}

Answer: BD

QUESTION 20
Your company has PIM running on some critical routers in your network, but another engineer has requested that you configure a PIM policy to prevent R2 from becoming a PIM neighbor of R1 by dropping the hello packets.
 
Referring to the exhibit, which three commands are necessary for preventing R2 from becoming a PIM neighbor of R1? (Choose three.)

A.    set protocols pim interface ge-0/0/1.0 neighbor-policy block-pim
B.    set policy-options policy-statement block-pim term 1 from route-filter 227.2.2.2/32 exact
C.    set policy-options policy-statement block-pim term 1 from route-filter 10.10.10.2/32 exact
D.    set policy-options policy-statement block-pim term 1 then reject
E.    set policy-options policy-statement block-pim term 1 from route-filter 10.10.10.1/32 exact

Answer: ACD


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