Which statements about MUX VLAN are true? (Choose two.)
A. MUX VLAN contains a principal VLAN and subordinate VLANs. The principal VLAN and subordinate VLANs cannot communicate.
B. MUX VLAN contains a principal VLAN and subordinate VLANs. The subordinate VLANs are classified into subordinate separate VLANs and subordinate group VLANs. The interfaces in the subordinate group VLAN can communicate with each other.
C. The principal VLAN and subordinate VLANs can communicate.
D. The interfaces of different subordinate separate VLANs can communicate with each other, but cannot communicate with the interfaces in the principal VLAN.
When configuring VLAN mapping, you must set the priority of outer VLAN ID.
A. True
B. False
The option field in DHCP messages has a fixed length of four bytes.
A. True
B. False
IP network can provide various packet forwarding service, the service demands that users care during packet forwarding include. (Choose three.)
A. Throughput
B. Delay
C. Cost
D. Loss of packet
IP QoS models include: (Choose three.)
A. Best-Effort
B. Integrated Service
C. Differentiated Service
D. FIFO Service
A company has four departments. Department A has 80 PCs, Departments B and C both have 20 PCs, and Department D has 30 PCs. Assuming the IP address 192.168.1.0/x is used, which of the following statements are true if the VLSM technology is used to divide subnets? (Choose two.)
A. Plan subnet 192.168.1.0/25 for Department A. The range of host addresses is 1 to 126.
B. Plan subnet 192.168.1.128/27 for Department B. The range of host addresses is 129 to 159.
C. Plan subnet 192.168.1.160/27 for Department C. The range of host addresses is 161 to 190.
D. Plan subnet 192.168.1.192/27 for Department D. The range of host addresses is 192 to 222.
Which of the following statements about the reliability requirement level are true? (Choose three.)
A. Faults seldom occur in the system software or hardware.
B. System functions are affected by faults.
C. System functions are affected by faults but can rapidly recover.
D. System functions can be ensured by using redundancy design, switchover policy, and high success rate in switchover.
A Class C network needs to be divided into five subnets and each subnet needs to contain a maximum of 20 hosts. Which of the following subnet masks is used?
A. 255.255.255.192
B. 255.255.255.240
C. 255.255.255.224
D. 255.255.255.248
Which statements about the Local-Preference attribute are true? (Choose two.)
A. Based on BGP route selection rules, the Local-Preference attribute has a lower priority than the Preferred-Value attribute. This means that BGP compares Local-Preference attributes of routes after comparing Preferred-Value attributes of them.
B. The Local-Preference attribute of a BGP route defaults to 0.
C. The Local-Preference attribute is used to select an exit point from the local AS for data flows.
D. Based on BGP route selection rules, the Local-Preference attribute has a lower priority than the MED attribute. This means that BGP compares Local-Preference attributes of routes after comparing MED attributes of them.
In the BGP routing table, if there are two BGP routes with the same destination address but different next hops, which statement about the two BGP routes is true?
A. Both BGP routes are advertised to other BGP peers.
B. Only the optimal route selected from the two BGP routes is advertised to other BGP peers.