The network shown in the figure below assumes that all routers can enable OSPF at the same time. Which router is the DR in this network? () (Single-choice question)
A. Router A
B. Router C
C. Router D
D. Router B
正解:D
質問 2:
What is RouterDeadInterval of the OSPF protocol on the broadcast network by default? ()
A. 40s
B. 10s
C. 20s
D. 30s
正解:A
質問 3:
The following statement about the TTL field in the IP packet header is correct. ()
A. TTL defines the time interval at which the source host can send data packets
B. Each time a P packet passes through a router, its TTL value will be reduced by 1
C. TTL defines the number of packets that the source host can send
D. Each time an IP packet passes through a router, its TTL value is increased by 1
正解:B
質問 4:
The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)
A. Received a data frame with a source MAC address of 5489-9811-0b49 and a destination MAC address of 5489-989d1d30 from the port. Forwarded from the Eth0/0/2 port
B. The data frame with the source MAC address of 5489-9885-18a8 and the destination MAC address of 5489-989d-1d30 is received from the port. It is forwarded from the Eth0/0/1 port
C. When the switch restarts, the MAC address learned by port Eth0/0/2 does not need to be relearned
D. When the switch restarts, the MAC address learned by port Eth0/0/2 does not need to be relearned
正解:B
質問 5:
The network administrator hopes that the data packets sent from host A.
to host B.
pass through the G0/0/3 interface between routers, and the data packets sent from host B. to host A.
pass through G0/ between routers. 0/4 interface, which of the following commands can achieve this requirement? ()
A. RTA.:ip route-statiC.0.0.0.0 0.0.0.0 11.0.12.6 RTB.:ip Route-statiC.0.0.0.00.0.0.0n11.0.12.1
B. RTA.:ip route-statiC.10.0.12.5 255.255.B255.252 11.0.12.6 RTB.:ip route-static/n10.0.12.1255.255.255.25211.0.12.1
C. RTA.:ip route-statiC.10.0.12.5 255.255.255.252 11.0.12.2 RTB.:ip route-static/n10.0.12.1255.255.255.25211.0.12.5
D. RTA.:ip route-statiC.0.0.0.0 0.0.0.0 11.0.12.2 RTB.:ip Route-statiC.0.0.0.00.0.0.0ln11.0.12.5
正解:C,D
質問 6:
Which of the following routing protocols has the highest priority?
A. OSPF
B. Direct
C. RIP
D. Static
正解:B
質問 7:
Which information of the data frame is used by the VLANIF interface to determine whether to perform Layer 2 or Layer 3 forwarding? ()
A. Source MAC
B. Destination port
C. Source IP
D. Destination MAC
正解:D
質問 8:
Which of the following port states is not included in the RSTP protocol? ()
A. Discarding
B. Blocking
C. Learning
D. Forwarding
正解:B
原田** -
H12-811_V1.0試験の内容をヴィジュアルで理解できるPass4Testがすごい。