Huawei M1

The IPv4 address space is divided into five classes: A, B, C, D and E. Class D IP addresses are multicast addresses ranging from 221.0.0.0 to 239.255.255.255

• True

• False

Tracert is a typical application of ICMP

• True

• False

172.16.0.255 is the broadcast address of the network segment 172.16.0.0/16

• True

• False

If the value of the Type field in an Ethernet II frame is 0x0806, the corresponding upper-layer protocol type is ():

• IPv4

• RARP

• ARP

• IPv6

There are two routers between a source device and a destination device, and the tracert command is executed to check the path connectivity. To check the first hop, the source device sends a UDP packet with a TTL value of 1 and a larger UPD port number to the destination device. When the packet arrives at the first router, the TTL value changes to 0. In this scenario, which of the following ICMP messages will the first router send to the source device?

• Time Exceeded

• Echo Request

• Echo Reply

• Port Unreachable

Which of the following statements is false about the functions of gratuitous ARP packets?

• Checks for duplicate IP addresses

• Advertises a new MAC address

• Ensures that the connection between a host and the gateway remains active when the host is idle

• Notifies other devices of a master/backup switchover in a VRRP group

If the network address is 10.1.1.0/30, then the corresponding broadcast address is ()?

• 10.1.1.1

• 10.1.1.2

• 10.1.1.3

• 10.1.1.4

If the broadcast address is 172.16.9.255, then the corresponding network address may be ()?

• 172.16.2.0/24

• 172.16.1.252/30

• 172.16.8.0/23

• 172.16.1.0/26

Which of the following are multicast MAC addresses?

• 00:1E:10:DD:DD:02

• FF:FF:FF:FF:FF:FF

• 01:80:C2:00:00:01

• 33:33:00:00:00:01

Which of the following statements about ICMP packets are true?

• ICMP is a network layer protocol

• An ICMP packet is encapsulated in an IP data packet and is not encapsulated at the transport layer

• ICMP does not suport redirection

• ICMP packets acnnot be used to detect the path MTU