更多"What does a Layer 2 switch do if it"的相关试题:
[单项选择]What does Peter do?（）
A. He's good at fixing things.
B. He can speak good German.
C. He does the washingup after supper
D. He's a language teacher.
[单项选择]What does Nera do for the preparation for becoming a secretary or a nurse
A. She is working in a nursery.
B. She is moving into her own apartment.
C. She is studying in a high school.
D. She is asking help from the father.
[单项选择]What does Forbes do when the exact assets are not known
A. It makes a fair guess.
B. It excludes the wealth of the privately held companies.
C. It makes a moderate assumption.
D. It estimates prudently the assets on the basis of the measurable wealth of the similar company.
[单项选择]What does Henry do to earn a ______
A. job
B. career
C. profession
D. living
[单项选择]What will an Ethernet switch do if it receives a unicast frame with a destination MAC that is listed in the switch table（）。
A. The switch will not forward unicast frames.
B. The switch will forward the frame to a specific port.
C. The switch will return a copy of the frame out the source port.
D. The switch will remove the destination MAC from the switch table.
E. The switch will forward the frame to all ports except the port on which it was received.
[单项选择]What does a man do when he cannot get exactly what he wants
A. He buys a similar thing of the colour he wants.
B. He usually does not buy anything.
C. At least two of his requirements must be met before he buys.
D. So long as the style is right, he buys the thing.
[单项选择]What does a router do?（）
A. Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)
B. Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)
C. Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)
D. Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)
[单项选择]What does your father do?（）
A. He is cleaning the street
B. He is forty
C. He is a farmer
D. He is all right
[单项选择]What does a Layer 2 switch use to decide where to forward a received frame?（）
A. source MAC address
B. source IP address
C. source switch port
D. destination IP address
E. destination port address
F. destination MAC address
[单项选择]What does a router do if it has no EIGRP feasible successor route to a destination network and the successor route to that destination network is inactive status?（）
A. It routes all traffic that is addresses to the destination network to the interface indicates in the routing table.
B. It sends a copy of its neighbor table to all adjacent routers.
C. It sends a multicast query packet to all adjacent neighbors requesting available routing paths to the destination network.
D. It broadcasts Hello packets to all routers in the network to re-establish neighbor adjacencies.
[单项选择]What does the TRUNCATE statement do?（）
A. Removes the table
B. Removes all rows from a table
C. Shortens the table to 10 rows
D. Removes all columns from a table
E. Removes foreign keys from a table
[单项选择]What does the center do to offer its help in an emergency situation
A. It gives the survivors medical care.
B. It leads over 158 country offices.
C. It sends goods to the countries in crisis.
D. It provides communication services.
[单项选择]What does "most businesses do without a second thought" (paragraph 3) mean
[单项选择]What does a BGP route reflector do when reflecting a route?（）
A. It prepends its cluster identifier to the route's cluster list.
B. It prepends its own originator identifier to the route's cluster list.
C. It replaces the route's cluster identifier with its own cluster identifier.
D. It replaces the route's originator identifier with its originator identifier.
[单项选择]How does a switch respond when it receives a message?（）
A. It reads the Layer-5 information and sends the message directly to the intended computer.
B. It reads the Media Access Control (MAC) address and sends the message directly to the intended computer.
C. It reads the Layer-5 information and broadcasts the message to all the computers that are connected to the switch.
D. It reads the Media Access Control (MAC) address and broadcasts the message to all the computers that are connected to the switch.
