JN0-102 · Question #326
Referring to the exhibit, which three networks match the policy? (Choose three.) [edit policy-options policy-statement my-policy] user@router# show term 1 { from { route-filter 192.168.0.0/16 prefix-l
The correct answer is A. 192.168.0.0/20 D. 192.168.128.0/21 E. 192.168.64.0/24. The policy term specifies that routes must be within the 192.168.0.0/16 supernet and have a prefix length between /20 and /24 inclusive. Networks 192.168.0.0/20, 192.168.128.0/21, and 192.168.64.0/24 satisfy both of these conditions.
Question
Referring to the exhibit, which three networks match the policy? (Choose three.) [edit policy-options policy-statement my-policy] user@router# show term 1 { from { route-filter 192.168.0.0/16 prefix-length-range /20-/24; } then accept; }
Options
- A192.168.0.0/20
- B192.168.0.0/16
- C192.168.128.0/18
- D192.168.128.0/21
- E192.168.64.0/24
How the community answered
(30 responses)- A80% (24)
- B13% (4)
- C7% (2)
Why each option
The policy term specifies that routes must be within the 192.168.0.0/16 supernet and have a prefix length between /20 and /24 inclusive. Networks 192.168.0.0/20, 192.168.128.0/21, and 192.168.64.0/24 satisfy both of these conditions.
The network 192.168.0.0/20 is within 192.168.0.0/16 and has a prefix length of /20, which is within the /20-/24 range.
The network 192.168.0.0/16 has a prefix length of /16, which is outside the specified prefix-length-range of /20-/24.
The network 192.168.128.0/18 has a prefix length of /18, which is outside the specified prefix-length-range of /20-/24.
The network 192.168.128.0/21 is within 192.168.0.0/16 and has a prefix length of /21, which is within the /20-/24 range.
The network 192.168.64.0/24 is within 192.168.0.0/16 and has a prefix length of /24, which is within the /20-/24 range.
Concept tested: Junos route-filter prefix-length-range matching
Source: https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/topic-map/policy-match-conditions.html
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