Question 1

Regarding the BGP alliance, the following description is wrong? Radio

Options :

A : The consortium divides an AS into sub-AS, and the alliance external AS still considers the consortium to be an AS

B : Subsystems within a consortium can use private AS numbers. Huawei NE/AR routers, a consortium can be configured with up to 32 subsystems.

C : Consortium can easily detect the routing loop within the AS because EBGP is running between the subAS

D : The subas number of the federation, which by default is advertised to the BGP peer outside the federation

Answer: D

Question 2

In an MPLS domain, depending on how the LSR handles the data, the LSR can be divided into Ingress LSR,

Transit LSR, and Transit LSR Egress LSR? For the same FEC An LSR can be an Iningress LSR for that EC or

a Transit for that FEC LSR.

Options :

A : TRUE

B : FALSE

Answer: A

Question 3

The means of the LAND attack is that the attacker sends an SVN packet message with the same source and destination addresses to the target host, the source port and the destination port are the same, and the receiver waits for the final ACK packet to be sent , the connection is always in a semi-connected state, resulting in a full limited TCP reception Waste of resources

Options :

A : True

B : False

Answer: A

Question 4

After you divide an interface of the firewall into the Untrust security domain, the interface belongs to the

Untrust zone and no longer belongs to the Local zone.

Options :

A : TRUE

B : FALSE

Answer: B

Question 5

Regarding the FTP protocol, which of the descriptions below is correct?

Options :

A : In FTP Passive mode, the client completes the initialization of the TCP session for control and data

B : In FTP Active mode, the server tells the client which port it expects to send data on by commanding "PORT"

C : FTP always uses a TCP session to transmit control information and data information

D : FTP always uses TCP port 20 to establish a data session, and ICP port 21 to establish control will always use

E : FTP TCP port 21 to establish a data session, TCP port 20 to establish a control session

Answer: A

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