WHAT lab u0 – 9:13PM – -cli (cli) admin p0 10.210.15.30 9:45PM – -cli (cli) —
Refer to the Exhibit.
— Exhibit –user@router> show system users
9:28PM up 2 days, 3:02, 2 users, load averages: 0.06, 0.13, 0.09
USER TTY FROM LOGIN@ IDLE WHAT
lab u0 – 9:13PM – -cli (cli)
admin p0 10.210.15.30 9:45PM – -cli (cli)
— Exhibit –Referring to the exhibit, which two statements are true? (Choose two.)
which statement is true about transit traffic sent to 2.2.2.2?
Refer to the Exhibit.
— Exhibit –user@R1> show route 2.2.2.2
user@R1> show route forwarding-table destination 2.2.2.2
Routing table: default.inet
Internet:
Destination Type RtRef Next hop Type Index NhRef Netif
2.2.2.2/32 user 1 17.1.1.2 ucst 642 9 xe-1/1/0.0
— Exhibit –Referring to the exhibit, which statement is true about transit traffic sent to 2.2.2.2?
which statement is true about transit traffic sent to 2.2.2.2?
Refer to the Exhibit.
— Exhibit –user@R1> show route forwarding-table destination 2.2.2.2
user@R1> show route 2.2.2.2
inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, – = Last Active, * = Both
2.2.2.2/32 *[OSPF/10] 2w3d 22:19:41, metric 1
> to 17.1.1.2 via xe-1/1/0.0
— Exhibit –Referring to the exhibit, which statement is true about transit traffic sent to 2.2.2.2?
which counter indicates a possible denial of service attack?
Refer to the Exhibit.
— Exhibit –user@R1> show pfe statistics traffic
Packet Forwarding Engine traffic statistics:
Input packets: 47593914461368 2 pps
Output packets: 28805646 3 pps
Packet Forwarding Engine local traffic statistics:
Local packets input : 36278104324
Local packets output : 2
Software input control plane drops : 0
Software input high drops : 0
Software input medium drops : 0
Software input low drops : 0
Software output drops : 0
Hardware input drops : 191367536738
Packet Forwarding Engine local protocol statistics:
HDLC keepalives : 0
ATM OAM : 0
Frame Relay LMI : 0
PPP LCP/NCP : 0
OSPF hello : 3883169
OSPF3 hello : 0
RSVP hello : 1440704
LDP hello : 4782297
BFD : 0
IS-IS IIH : 0
LACP : 0
ARP : 765512
ETHER OAM : 0
Unknown : 1897610
Packet Forwarding Engine hardware discard statistics:
Timeout : 0
Truncated key : 0
Bits to test : 0
Data error : 0
Stack underflow : 0
Stack overflow : 0
Normal discard : 191367536738
Extended discard : 0
Invalid interface : 0
Info cell drops : 191367536738
Fabric drops : 191367536738
Packet Forwarding Engine Input IPv4 Header Checksum Error and Output MTU Error statistics:
Input Checksum : 0
Output MTU : 0
— Exhibit –Referring to the exhibit, which counter indicates a possible denial of service attack?
which three statements are true?
Refer to the Exhibit.
— Exhibit –user@R1> show configuration interfaces lo0
unit 5 {
family inet {
filter {
input JUNOS;
}
address 5.5.5.5/32;
}
}
user@R1> show configuration firewall family inet filter JUNOS
term term1 {
from {
protocol tcp;
port [ telnet ftp ftp-data snmp ssh syslog http tacacs 64644 1024-65535 ];
}
then {
log;
accept;
}
}
term default {
then {
discard;
}
}
— Exhibit –Referring to the exhibit, which three statements are true? (Choose three.)
You are using the ping command to troubleshoot a suspected MTU problem
Refer to the Exhibit.
— Exhibit –user@R1> show configuration interfaces
xe-1/1/0 {
unit 0 {
family inet {
address 17.1.1.1/24;
}
family mpls;
}
}
user@R1> ping 17.1.1.2 size 1473 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1473 data bytes
ping: sendto: Message too long
ping: sendto: Message too long
ping: sendto: Message too long
user@R1> ping 17.1.1.2 logical-system R1 size 1472 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1472 data bytes
1480 bytes from 17.1.1.2: icmp_seq=0 ttl=64 time=0.933 ms
1480 bytes from 17.1.1.2: icmp_seq=1 ttl=64 time=0.838 ms
1480 bytes from 17.1.1.2: icmp_seq=2 ttl=64 time=4.688 ms
— Exhibit –You are using the ping command to troubleshoot a suspected MTU problem.
What is the problem?
Refer to the Exhibit.
— Exhibit –user@r2# run show route 100.1.1.0/24 detail
inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
100.1.1.0/24 (1 entry, 1 announced)
*Static PreferencE. 5
Next hop typE. Reject
Address: 0x8f7b5a4
Next-hop reference count: 2
StatE.
Local AS: 65001
AgE. 59
Task: RT
Announcement bits (1): 2-KRT
AS path: 65005 I
user@r2# show protocols bgp
group ibgp {
type external;
export to-bgp;
neighbor 10.1.2.1 {
local-address 10.1.2.2;
family inet {
unicast;
}
family inet6 {
unicast;
}
peer-as 65005;
}
}
user@r2# run show bgp summary
Groups: 1 Peers: 1 Down peers: 0
Table Tot Paths Act Paths Suppressed History Damp State Pending
inet6.0
0 0 0 0 0 0
inet.0
0 0 0 0 0 0
Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped…
10.1.2.1 65005 31 31 0 0 12:08 Establ
inet6.0: 0/0/0/0
inet.0: 0/0/0/
user@r2# show policy-options
policy-statement to-bgp {
from protocol static;
then accept;
}
user@r2# run show route advertising-protocol bgp 10.1.2.1
[edit]
user@r2#
— Exhibit –Referring to the exhibit, router r2 does not advertise the static route to peer 10.1.2.1.
What is the problem?
Which two statements are true?
— Exhibit –Local traffic capture on r1:
Address resolution is OFF.
Listening on ge-5/3/0.0, capture size 1514 bytes
22:16:33.610374 Out IP (tos 0xc0, ttl 1, id 34562, offset 0, flags [none], proto: OSPF (89), length:
76) 10.1.2.1 > 224.0.0.5: OSPFv2, Hello, length 56 [len 44]
Router-ID 1.1.1.1, Backbone Area, Authentication TypE. none (0)
Options [External, LLS]
Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.252, Priority 128
LLS: checksum: 0xfff6, length: 3
Extended Options (1), length: 4
Options: 0x00000001 [LSDB resync]
[edit]
user@r1# run show ospf interface
Interface State Area DR ID BDR ID Nbrs
ge-5/3/0.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 0
lo0.1 DR 0.0.0.0 1.1.1.1 0.0.0.0 0
[edit]
user@r1# run show ospf neighbor
————————————————————————-Local traffic capture on r2:
Address resolution is OFF.
Listening on ge-5/3/1.0, capture size 1514 bytes
22:16:42.238030 Out IP6 (class 0xc0, hlim 1, next-header: OSPF (89), length: 36)
fe80::6687:88ff:fe6c:6769 > ff02::5: OSPFv3, Hello, length 36
Router-ID 2.2.2.2, Backbone Area
Options [V6, External, Router]
Hello Timer 10s, Dead Timer 40s, Interface-ID 0.0.0.1, Priority 128
Neighbor List:
user@r2# run show ospf interface
OSPF instance is not running
— Exhibit –Refer to the Exhibit.
Referring to the exhibit, routers r1 and r2 are connected to each other by interfaces ge-5/3/0 and
ge-5/3/1 respectively. They do not become OSPF neighbors.
Which two statements are true? (Choose two.)
which two OSPF adjacency problems are present?
Refer to the Exhibit.
— Exhibit –May 20 22:27:04.010297 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0)
May 20 22:27:04.010320 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1
May 20 22:27:04.010342 checksum 0x166d, authtype 0
May 20 22:27:04.010365 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
May 20 22:27:04.010387 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0
May 20 22:27:07.891698 OSPF periodic xmit from 192.168.0.1 to 224.0.0.5 (IFL 2684276180 area
0.0.0.0)
May 20 22:27:12.749988 OSPF packet ignored: area mismatch (0.0.0.1) from 192.168.0.2 on intf
ge-1/1/2.0 area 0.0.0.0
May 20 22:27:12.750071 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0)
May 20 22:27:12.750095 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1
May 20 22:27:12.750116 checksum 0x166d, authtype 0
May 20 22:27:12.750139 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128
May 20 22:27:12.750161 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0
May 20 22:27:14.393182 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0)
May 20 22:27:14.393262 Version 2, length 44, ID 10.10.10.1, area 0.0.0.0
May 20 22:27:14.393284 checksum 0x0, authtype 0
May 20 22:27:14.393307 mask 255.255.255.252, hello_ivl 50, opts 0x12, prio 128
May 20 22:27:14.393368 dead_ivl 200, DR 0.0.0.0, BDR 0.0.0.0
May 20 22:27:14.393399 OSPF packet ignored: our router ID received from 192.168.0.2 on intf
ge-1/1/2.0 area 0.0.0.0
— Exhibit –Referring to the exhibit, which two OSPF adjacency problems are present? (Choose two.)
why does only the loopback interface appear in the show ospf interface output?
Refer to the Exhibit.
— Exhibit –[edit]
user@router# show interfaces
ge-1/1/2 {
vlan-tagging;
unit 100 {
vlan-id 100;
family inet {
address 192.168.0.1/30;
}
}
}
lo0 {
unit 0 {
family inet {
address 10.10.10.1/32;
}
}
}
[edit]
user@router# show protocols ospf
area 0.0.0.0 {
interface ge-1/1/2.0 {
interface-type p2p;
metric 250;
}
interface lo0.0;
}
[edit]
user@router# run show ospf interface
Interface State Area DR ID BDR ID Nbrs
lo0.0 DR 0.0.0.0 10.10.10.1 0.0.0.0 0
[edit]
user@router#
— Exhibit –Referring to the exhibit, why does only the loopback interface appear in the show ospf interface
output?