SSH is a secure protocol that establishes tunnels for users on insecure networks. Which of the following statements is false about SSH login?

• A.The SSH server supports authentication. Only users who have passed authentication can log in to the device.
• B.When the SSH server function is enabled on a device, the socket obtaining service is also enabled on the device. This makes the device prone to scanning by attackers. As such, the SSH server function and the corresponding port can be disabled when the SSH server function is not required.
• C.An ACL rule can be configured for each VTY channel to control the IP addresses of clients that are allowed to log in to the device.
• D.By default, the port number of the SSH server is 23. You can change the port number of the SSH server to a non-well-known port number to reduce the probability of being scanned and attacked.

Comment: *

Name: *

Email: *

Verification: *

Type 4 LSA (ASBR-Summary-LSA) is not allowed to appear in the NSSA area.

• A.FALSE
• B.TRUE

Comment: *

Name: *

Email: *

Verification: *

In WLAN networking, which of the following backups supports both active backup and load sharing backup?

• A.Dual-link cold backup
• B.N+1 backup
• C.VRRP dual-machine hot standby
• D.Dual link hot standby

Comment: *

Name: *

Email: *

Verification: *

A certain router outputs the following information, which of the following statements is correct? (Multiple choice)
<R1>display ospf interface Gigabitethernet 0/0/0
OSPF Process 1 with Router D 10.1.1.1
Interface: 10.0. 12.1Gigabitethernet 0/0/0
Cost: 1 State: DR Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.0. 12.1
Backup Designated Router: 10.0.12.2
Timers: Hello 10Dead 40Poll 120Retransmit 5Transmit Delay 1

• A.This router is the DR
• B.The interface address of this router is 10.1.12.1
• C.The Router-ID of this router is 10.1.1.1
• D.The network type of this interface is broadcast

Comment: *

Name: *

Email: *

Verification: *

Which of the following statements regarding the firewall zone security level is false?

• A.The configured security level cannot be changed.
• B.Two zones cannot be configured with the same security level.
• C.The default security level of the new zone is 1.
• D.Only the security level of the user-defined zone can be configured.

Comment: *

Name: *

Email: *

Verification: *