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QUESTION 1
The difference between the IGMP versions is: (multiple choice)
A. IGMPv1/v2 cannot elect the querier by itself, but IGMPv3 can.
B. For members to leave, IGMPv2/v3 can leave actively, while IGMPv1 cannot.
C. Neither IGMPv1/v2/v3 can support the SSM model.
D. IGMPv1 does not support specific group queries, while IGMPv2 supports it.
Correct Answer: BD
QUESTION 2
In the RSTP protocol, a port role different from that in STP is defined. The port role that cannot be in the forwarding state is: (multiple selections)
A. Root port
B. Designated Port
C. Backup Port
D. Alternate Port
Correct Answer: CD
QUESTION 3
The definition of the router role in the OSPF area or between the areas is correct (multiple choice)
A. Internal router: refers to the router that all interfaces belong to the same area.
B. ABR: refers to a router that connects one or more areas and connects to the backbone area, and these routers act as routing gateways for inter-domain communication.
C. Backbone router: A router with at least two interfaces belonging to the backbone area.
D. ASBR: Can be an internal router, backbone router or area edge router
Correct Answer: ABD
QUESTION 4
In a network running STP, when the network topology changes, multiple topology change information is sent. Several topology change information is defined in the RSTP network.
A. a kind
B. Two kinds
C. three
D. four
Correct Answer: A
QUESTION 5
Which parts of the SNAP address used by the IS-IS protocol are mainly composed? (multiple choice)
A. AREA ID
B. DSCP
C. SYSTEM ID
D. SEL
Correct Answer: ACD
QUESTION 6
The following is a partial configuration of the router RTA. For this part of the configuration description, the correct one is: (multiple choice)
A. Disable the interface gigabitethernet1/0/0 to send OSPF packets.
B. The interface cannot send HELLO packets.
C. The direct route of gigabitethernet1/0/0 can still be advertised.
D. It cannot form a neighbor relationship with the directly connected neighbor of the interface.
Correct Answer: ABCD
QUESTION 7
The state in which no connection is established between BGP neighbors and no attempt is made to establish a connection is:
A. Established
B. Idle
C. Active
D. Open Confirm
Correct Answer: B
QUESTION 8
The following description of the OSPE message is correct (multiple choice)
A. Hello packets are sent immediately after the interface is added to the OSPF area.
B. After receiving the LS Update message, the router must send an LSAck to confirm
C. The LS Update message synchronizes the link-state database by sending a detailed LSA.
D. The LS Update message is sent only when an adjacency is established.
Correct Answer: AC
QUESTION 9
In the RSTP protocol, the uplink port of the non-root switch has the parameter of the port identifier. The port identifier contains two parts, namely:
A. One-byte length port priority and one-byte length port number
B. One-byte length port priority and two-byte length port number
C. Two-byte length port priority and one-byte length port number
D. Two-byte length port priority and two-byte length port number
Correct Answer: A
QUESTION 10
Because the attribute AS-PATH cannot function in the AS, the BGP router is not required to announce any update information from the IBGP peer to its IBGP peer.
A. Correct
B. Error
Correct Answer: A
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