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Refer to the exhibit.Switch－1 needs to send data to a host with a MAC address of 00b0.d056.efa4.What will Switch－1 do with this data?()

题目
Refer to the exhibit.Switch－1 needs to send data to a host with a MAC address of 00b0.d056.efa4.What will Switch－1 do with this data?()

A.switch-1 will drop the data because it dose not have an entry for that MAC address

B.switch-1 will flood the data out all of its port from which the data originated

C.switch-1 will forward the data to its default gateway

D.tch-1 will send an ARP request out all its ports except the port from which the data originated

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相似问题和答案

第1题：

Refer to the graphic.Host A is communicating with the seiver. What will be the source MAC address of the frames received by Host A from the server?()

A.the MAC address of the seiver network interface

B.the MAC address of host A

C.the MAC address of router interface e 1

D.the MAC address of router interface e0


参考答案：D

第2题：

Anytime a host or a router has an IP datagram to send to another host or router, it has the（　）address of the receiver. This address is obtained from the DNS if the sender is the host or it is found in a routing table if the sender is a router. But the IP data gram must be（　） in a frame to be able to pass through the physical network. This means that the sender needs the （　）address of the receiver. The host or the router sends an ARP query packet. The packet includes the physical and IP addresses of the sender and the IP address of the receiver. Because the sender does not know the physical address of the receiver, the query is（　） over the network.Every host or router on the network receives and processes the ARP query packet, but only the intended recipient recognizes its IP address and sends back an ARP response packet.The response packet contains the recipient's IP and physical addresses. The packet is（请作答此空） directly to the inquirer by using the physical address received in the query packet.

A. multicast
B. unicast
C. broadcast
D. multiple unicast

答案：B
解析：
任何时候主机或路由器要发送 IP 数据报发送给另一主机或路由器时，都需要知道接收方的逻辑地址。发送主机从 DNS 获得该地址，发送路由器则在路由表中找到该地址。但 IP 数据报必须封装在帧中才能通过物理网络。这意味着发送者需要知道接收者的物理地址。主机或路由器需发送 ARP 查询报文，该报文分组包含发送者的物理地址和 IP 地址及接收者的 IP 地址。这是因为送者不知道接收者的物理地址，所以需在全网广播报文。网络上的每个主机或路由器都能接收并处理该 ARP 查询报文，但只有预期的接收者识别其 IP 地址并响应该 ARP 报文。响应报文包含接收者的 IP 地址和物理地址。包含了接收者物理地址的响应报文分组通过单播的方式直接发送给发送者。

第3题：

Which of the following correctly describe steps in the OSI data encapsulation process?()

A. Transport layer divides a data stream into segments & adds reliability & flow control information

B. Data link layer adds physical source & destination address & an FCS to the segment

C. Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information

D. Packets are created when the network layers adds layers 3 address & control information to a segment

E. The presentation layer translated bits into bits into voltages for transmission across the physical link


参考答案：A, D

第4题：

Which of the following correctly describe steps in the OSI data encapsulation process?（）

  • A、Transport layer divides a data stream into segments & adds reliability & flow control information
  • B、Data link layer adds physical source & destination address & an FCS to the segment
  • C、Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information
  • D、Packets are created when the network layers adds layers 3 address & control information to a segment
  • E、The presentation layer translated bits into bits into voltages for transmission across the physical link

正确答案:A,D

第5题：

Host 1 receives a file from remote server 1. Which MAC address appears as the source address in the header of the frames received by Host 1（）。

  • A、The MAC address of the NIC in Host 1
  • B、The MAC address of the NIC in server 1
  • C、The MAC address of the Fa0/0 interface of router R1
  • D、The MAC address of the s0/0/0 interface of the router R2

正确答案:C

第6题：

Refer to the exhibit. What will Router1 do when it receives the data frame shown?()

A.Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965.

B.Router1 will strip off the source IP address and replace it with the IP address 192.168.40.1.

C.Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320.

D. Router1 will strip off the destination IP address and replace it with the IP address of 192.168.40.1.

E.Router1 will forward the data packet out interface FastEthernet0/1.

F.Router1 will forward the data packet out interface FastEthernet0/2.


参考答案：A, C, F

第7题：

A host is attempting to send data to another host on a different network. What is the first action that the sending host will take?（）

  • A、Drop the data.
  • B、Send the data frames to the default gateway.
  • C、Create an ARP request to get a MAC address for the receiving host.
  • D、Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.

正确答案:C

第8题：

A host is attempting to send data to another host on a different network. What is the first action that the sending host will take?()

A. Drop the data.

B. Send the data frames to the default gateway.

C. Create an ARP request to get a MAC address for the receiving host.

D. Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.


参考答案：C

第9题：

Which OSI layer header contains the address of a destination host that is another network?（）

  • A、application
  • B、presentation
  • C、session
  • D、transport
  • E、network
  • F、data link
  • G、physical

正确答案:E

第10题：

Host 1 has just started up and requests a web page from web server 2. Which two statements describe steps in the process Host 1 uses to send the request to web server 2 (choose two)（）。

  • A、Host 1 addresses the frames to the MAC address of router R1
  • B、Host 1 looks in its ARP cache for the MAC address of router R1
  • C、Host 1 addresses the frames to the MAC address of web server 2
  • D、Host 1 sends the packets to router R1 to be forwarded to web server 2
  • E、Host 1 sends a broadcast ARP request to obtain the MAC address of webserver2

正确答案:C,E

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