Part of the field in the IP packet is dedicated to the description of the life cycle of the message, that is TTL value, how much is its maximum value ?
A . 255
B . 256
C . 1023
D . 1024
Answer: A
Which statement about IP routing statement is true?
Which statement about IP routing statement is true?
A . Routing is the concept of the second layer in the OSI model.
B . Any of the routing must include the following three parts information: source address, destination address and next hop.
C . In the LAN, routing includes the following two parts content: IP address and MAC address.
D . IP routing is the path information of guiding IP packet forwarding.
Answer: D
In Ethernet, according to what address to distinguish the different devices?
In Ethernet, according to what address to distinguish the different devices?
A . LLC address
B . MAC address
C . IP address
D . IPX address
Answer: B
How much is SHDSL maximum transmission distance?
How much is SHDSL maximum transmission distance?
A . 1.5KM
B . 6KM
C . 10KM
D . 20KM
Answer: B
In the routing table item, for the same destination address and mask, only corresponding to a unique nexthop and outbound interface.
In the routing table item, for the same destination address and mask, only corresponding to a unique nexthop and outbound interface.
A . True
B . False
Answer: B
Routing in the routing table can not exist mask of 0.0.0.0 routing entry.
Routing in the routing table can not exist mask of 0.0.0.0 routing entry.
A . True
B . False
Answer: B
According to the IEEE 802.1Q standard, which position does VLAN identification field in the Ethernet frame ?
According to the IEEE 802.1Q standard, which position does VLAN identification field in the Ethernet frame ?
A . before the source MAC address and destination MAC address
B . in the middle of source MAC address and destination MAC address
C . after the source MAC address and destination MAC address
D . not fixed
Answer: C
LAN computers in judging the received broadcast frame is the method whether they should receive, judge whether the source MAC address of the frame is the same as the hardware address of the machine.
LAN computers in judging the received broadcast frame is the method whether they should receive, judge whether the source MAC address of the frame is the same as the hardware address of the machine.
A . True
B . False
Answer: B
Which medium does 10BASE-T refer to define?
Which medium does 10BASE-T refer to define?
A . thick coaxial cable
B . thin coaxial cable
C . twisted-pair
D . optical fiber
Answer: C
Which layer of the OSI reference model does Ethernet switches work in ?
Which layer of the OSI reference model does Ethernet switches work in ?
A . Physical Layer
B . Data link layer
C . Network layer
D . Transport Layer
Answer: B