H3C Constructing Small - and Medium - Sized Enterprise Network Sample Questions:

1. The following debug information is viewed on the customer's router MSR 30:
*0.87831022 IP/8/debug_icmp:
ICMP Receive: ttl-exceeded(Type=11, Code=0), Src = 3.3.3.1, Dst = 3.3.3.2; Origi
nal IP header: Pro = 1, Src = 3.3.3.2, Dst = 20.1.1.1, First 8 bytes = 080081FF
ABD40004
*0.87833017 IP/8/debug_icmp:
ICMP Receive: ttl-exceeded(Type=11, Code=0), Src = 3.3.3.1, Dst = 3.3.3.2; Origi
nal IP header: Pro = 1, Src = 3.3.3.2, Dst = 20.1.1.1, First 8 bytes = 08007A2E
ABD40005
Based on this, it can be inferred that ______.

A) The command ping 20.1.1.1 was executed on the router with IP address 3.3.3.2
B) The destination address of the ICMP packet is 20.1.1.1
C) There may be a routing loop, because the information shows ttl-exceeded
D) The destination address of the ICMP packet is 3.3.3.2

2. On the MSR router, the -t parameter of the ping command specifies the timeout period of the ICMP Echo Reply message, the value range is 1~65535, the unit is milliseconds, and its default value is ______ milliseconds.

A) 2000
B) 1000
C) 100
D) 200

3. During the establishment of the TCP connection as shown in the figure, the X part of the SYN should be filled with ________.

A) a+1
B) b+1
C) b
D) a

4. In the network environment as shown in the figure, perform the following NAT configuration on RTA:

[RTA]acl number 2000
[RTA-acl-basic-2000]rule 0 permit source 100.0.0.0 0.0.0.255
[RTA-acl-basic-2000]nat address-group 1 200.76.28.11 200.76.28.11
[RTA]interface Ethernet0/1
[RTA-Ethernet0/1]nat outbound 2000 address-group 1
After configuration, both Client_A and Client_B are accessing Server, then the NAT table of RTA may be ______ at this time.

A) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76. 28.12 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:51
B) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.12 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76. 28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:51
C) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:59 1 200.76. 28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:51
D) Protocol GlobalAddr Port InsideAddr Port DestAddr Port 1 200.76.28.11 12289 100.0.0.1 1024 200.76.29.4 1024 VPN: 0, status: NOPAT, TTL: 00:01:00, Left: 00:00:59 1 200.76. 28.11 12288 100.0.0.2 512 200.76.29.4 512 VPN: 0, status: 11, TTL: 00:01:00, Left: 00:00:51

5. PPP has to go through a series of negotiation processes before establishing a link. The correct negotiation sequence is ______.

A) PAP/CHAP>LCP>NCP
B) NCP>LCP>PAP/CHAP
C) LCP>PAP/Chap>NCP
D) LCP> NCP>PAP/CHAP

Solutions: