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H3C Constructing Secure optimized WANs v2.0 Sample Questions:

1. by the security gateway device displa ipsec sa command displays the following order information, the information is understood by ______ .
Interface: Serial0/2/1 path MTU: 1500
---------------- -------------
IPsec polic name: "1"
sequence number: 1
mode: isakmp
-----------------------------
connection id: 5
encapsulation mode: transport
perfect forward secrec: None
tunnel:
local address: 10.2.1.1
remote address: 10.2.1.2
Flow:
sour addr: 10.1.1.0/255.255.255.0 port: 0 protocol: IP
dest addr: 10.3.1.0/255.255.255.0 port: 0 protocol: IP
[inbound ESP SAs]
spi: 909448761 ( 0x36351639 )
proposal: ESP-ENCRPT-DES ESP-AUTH-MD5
sa remaining ke duration ( btes/sec ) : 1887435204/83
spi: 909448761 ( 0x36351639 )
proposal: ESP-ENCRPT-DES ESP-AUTH-MD5
sa remaining ke duration ( btes/sec ) : 1887435204/83
max received sequence-number: 19
udp encapsulation used for nat traversal: N
[outbound ESP SAs]
spi: 1583842120 ( 0x5e678348 )
proposal: ESP-ENCRPT-DES ESP-AUTH-MD5
sa remaining ke duration ( btes/sec ) : 1887435204/83
max sent sequence-number: 20
udp encapsulation used for nat traversal: N

A) This security policy requires the use of IKE dynamic negotiation key, SPI , security protocol and algorithm and other parameters
B) This security policy works in transmission mode
C) This security policy requires manual configuration of parameters such as keys, SPI , security protocols and algorithms
D) This security policy work in tunnel mode

2. Configure the following commands on the MSR router:
qos pql 1 queue top queue-length 1024
qos pql 1 inbound-interface GigabitEthernet0/0 queue top
qos pql 1 protocol ip tcp 1000 queue top
qos pql 1 protocol ip tcp 1001 queue middle
qos pql 1 protocol ip tcp 1002 queue normal
qos pql 1 protocol ip tcp 1003 queue bottom
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos lr outbound cir 10000 cbs 625000 ebs 0
qos pq pql 1
From the interface G0 / 0 into the only access port G0 / 1 forwarding traffic directed include the destination port, respectively 1000 , 1001 , 1002 and 1003 of the TCP packet flow rates of 3Mbps , other background traffic 4Mbps , other interfaces no flow, then the following claims The incorrect one is ______ ( choose one or more )

A) Head of port 1001 of TCP packet forwarding rate of 3Mbps
B) Head of port 1003 of TCP packet forwarding rate of 1Mbps
C) Head of the port 1002 of TCP packet forwarding rate of 3Mbps
D) back background traffic packets into the Bottom queue, forward speed of about 0.5Mbps
E) Head of port 1000 of TCP packet forwarding rate of 3Mbps

3. Regarding the echo in the VoIP telephone system, which of the following descriptions are correct ?

A) In VoIP networks, echo is related to the choice of encoding.The greater the compression ratio, the greater the relative echo in the network.
B) back sound into electrical echo and acoustic echo, electrical echo conventional telephone systems is mainly due to two, four-wire transducer impedance mismatch caused by
C) speech voice gateway device when performing analog to digital conversion may introduce echo, an echo suppression function but can be configured to reduce the impact on the voice gateway.
D) language voice gateway equipment itself does not bring new echo, but the IP network to bring network latency, increasing the echo time delay, leading to the original feel of the echo in VoIP become energy network The echo of being felt.

4. To clear the established IPSec security association, which of the following commands should be used ?

A) reset ike sa
B) reset ipsec sa
C) reset ipsec
D) reset ipsec polic

5. The edge devices of the MPLS network are called _______ .

A) LER
B) LSR
C) LSP
D) LRR

Solutions: