GB0-391-ENU 実際試験問題と解答 - 模擬練習 - 受験自信を増やす

Question No : 1
On a router perform row displa'interface tunnel explicit shown GRE tunnel interface as follows :
<Router>displa interface Tunnel 0
Tunnelo current statle: UP
Line protocol current state: UP
Description: Tunnel 0 Interface
T he Maximum transmit Unit is 1476
Internet Addess is 192.1.1.1/24 Primar.
Encapsulation isTUNNELT aggregation ID not- et
Tunnel source l0.1.11.1 destination 10.1.13.1
Tunnel keeepalive enable Period ( 10 s ) , Retries ( 3 )
Tunnel protocol/transport GRE/IP.
GRE key disable
Checksumming of GRE packets disabled
Last 300 seconds input:.0 btes/secl 0 packet/sec.
Last 300 seconds output:..0 bytes/sec , 0 packets/sec.
4 packets input 72bytes.
0 input error
1 packets output , 24 btes
0 0utput error
From the above information, we can know ____ .( Choose one or more )

A.The tunnel interface is in the UP state, and the MTU is 1467 bytes
B.The Keepalive function is enabled on the Tunnel interface .Once the router fails to receive the Keeplive packets from the other party within 30s , the tunnel is considered unavailable
C.tunnel track start validation, verification does not start
D.tunnel channel source lP address of 10.1.11.1

正解:

Question No : 2
Execute the displa interface tunnel command on a router to display the information of the GRE tunnel interface as follows:
<Router> displa interface Tunnel O
Tunnelo current state: UP
Line protocol current state: UP
Description: Tunnelo Interface
The Maximum Transmit Unit is 1476
Internet Address is 192.1.2.1/24 Primar
Encapsulation is TUNNEL , agg regation ID not set
Tunnel source 10.1.11.1 , destination 10.1.13.1
Tunnel keepalive enable , Period ( 10 s ) , Retries ( 3 )
Tunnel protocol/transport GRE/IP
GRE ke disabled
Checksumming of GRE packets disabled
Last 300 seconds input: 0 btes/sec , 0 packets/sec
Last 30 0 seconds output: 0 btes/sec , 0 packets/sec
4 packets input , 72 btes
0 input error
1 packets output , 24 btes
0 0utput error
It can be known from the above information.( Choose one or more )

A.The tunnel interface is in the UP state, and the MTU is 1476 bytes
B.The Keeplive function is enabled on the tunnel interface .Once the router does not receive the Keeplive message from the other party within 30s , the tunnel is considered unavailable.Although the tunnel interface is still in the UP state, the tunnel interface is a static route for the outgoing interface Will disappear from the routing table ;
C.tunnel channel does not start verification, verification can not start
D.tunnel channel source lP address 192.1.1.1

正解:

Question No : 3
Which of the following descriptions about GRE are correct ? ( Choose one or more )

A.bearing carrier IP header to UDP port number 47 identifies the GRE header
B.GRE uses the Ethernet protocol type Ox0800 to identify the payload packet as IP
C.GRE VPN can transmit multicast data
D.adopted using IP over IP of GRE encapsulation, public network and the private network interface address may coincide

正解:

Question No : 4
Which of the following descriptions about GRE are correct ? ( Choose one or more )

A.bearing carrier lP head is lP protocol number 47 identifies the GRE header
B.the GRE with the Ethernet protocol type 0 x0806 identified load package for lP
C.GRE VPN can transmit multicast data
D.adopted using IP over IP of GRE encapsulation, the public network and private network interfaces may not coincide with the address

正解:
Explanation:
0x0800

Question No : 5
Which of the following descriptions about GRE is wrong ? ( Choose one or more )

A.bearing carrier IP header to UDP port number 47 identifies the GRE header
B.GRE uses the Ethernet protocol type Ox0800 to identify the payload packet as IP
C.GRE VPN is limited to the transmission of unicast data
D.using IP overIP the GRE encapsulation, public network and the private network interface address may coincide

正解:
Explanation:
GRE can transmit multicast, but IPSEC cannot

Question No : 6
Hereinafter GREVPN and BGP / MPLS VPN described above are correct ____ .

A.Both can separate the address space
B.both point to point tunnel
C.GREVPN does not separate address space, BGP/MPLS VPN can separate address space
D.GRE VPN can provide advanced security such as data encryption, but BGP/MPLS VPN cannot provide such security.

正解:

Question No : 7
The following of GRE VPN and BGP / MPLS VPN correctly described ____ .

A.Both can separate the address space
B.both point to point tunnel
C.GRE VPN can separate address space, BGP/MPLS VPN cannot separate address space
D.GRE VPN cannot separate address space, BGP/MPLS VPN can separate address space

正解:

Question No : 8
According to different operating modes, VPN can be divided into the following types____ .

A.Intranet VPN
B.Internet VPN
C.CPE-Based VPN
D.Network-Based VPN

正解:

Question No : 9
According to the different network levels, VPN can be divided into the following types

A.Intranet VPN
B.Internet VPN
C.Layer2 VPN
D.Layer3 VPN

正解:

Question No : 10
What is incorrect about the description of L2TP VPN and SSL VPN?

A.have no need to install, maintain client
B.Both support Web access
C.All support lP access mode
D.are based on TCP package

正解:

Question No : 11
Which description is correct about L2TP VPN and SSL VPN?

A.All need to install and maintain the client
B.Both support Web access
C.All support lP access mode
D.are based on UDP encapsulation

正解:

Question No : 12
About L2TP VPN and GRE VPN are correct is ____ .( Choose one or more )

A.all point to point VPN
B.Both support tunnel verification
C.All belong to L3 VPN ( Laer 3 VPN , Layer 3 VPN ) technology
D.are based lP package

正解:

Question No : 13
The incorrect description of L2TP VPN and GREVPN is ____ .( Choose one or more )

A.all point to point VPN
B.Both support tunnel verification
C.Both support dynamic address acquisition
D.are based on UDP encapsulation

正解:

Question No : 14
Which of the following VPN technologies are suitable for corporate employees on business trips to remotely access the corporate network through the Internet ?

A.BGP/MPLS VPN
B.GRE VPN
C.SSL VPN
D.VLL

正解:

Question No : 15
Which of the following VPN technologies are suitable for enterprise employees to remotely access the enterprise private network through the Internet ? ( Choose one or more )

A.SSL VPN
B.L2TP VPN
C.GRE VPN
D.BGP/MPLS VPN

正解:

H3C GB0-391-ENU 問題練習