Which of the following methods can be used to implement communication between Ethernet switches across VLANs? (Select All that Apply)

When different VLANs are on the same switch, you can set the IP address of the VLANIF interface to implement route forwarding.

When different VLANs are configured on different switches, you can configure hybrid or trunk interfaces to implement inter-VLAN communication.

Smart Link can be deployed on switches to implement inter-VLAN communication.

When different VLANs are on the same switch, you can set the IP address of the VLANIF interface to implement route forwarding.

You can configure MSTP on a switch to implement inter-VLAN communication.

When different VLANs are configured on different switches, you can configure hybrid or trunk interfaces to implement inter-VLAN communication.

A trunk interface allows packets from VLAN 100, VLAN 200, and VLAN 300 to pass through. However, only packets from VLAN 100 and VLAN 200 carry tags, and packets from VLAN 300 do not carry tags. Which of the following is the possible cause?

The port trunk allow-pass vlan 100 200 command is set during trunk port configuration, but VLAN 300 is not included.

The PVIDs of this port are 100 and 200.

GVRP is enabled on this interface.

Generally, a Layer 3 switch forwards IP packets more efficiently than a common router. Which one of the following reasons is true?

An ASIC chip is used to forward packets, and the forwarding technology of 'one-time routing and multiple-time switching' is used.

VLANs are configured to suppress broadcast storms, saving bandwidth and system resources.

Hardware with lower specifications is used.

The packet-to-packet forwarding technology is used.

Which of the following statements about IP routes are correct?

IP routes are used to guide IP packet forwarding.

In a LAN, a route consists of the following parts: IP address and MAC address.

IP routes are used to guide IP packet forwarding.

Routing is a concept at the second layer of the OSI model.

Any route must contain the following information: source address, destination address, and next hop.

The routing table of a router contains the following two entries:Destination/Mask Protocol Pre Cost Nexthop Interface9.0.0.0/8 OSPF 10 50 1.1.1.1 Serial09.1.0.0/16 RIP 100 5 2.2.2.2 Ethernet0If the router needs to forward packets with the destination address of 9.1.4.5, which of the following statements is correct?

The router selects the second route, because this route matches the destination address 9.1.4.5 more accurately.

The router selects the first route, because the priority of OSPF is higher.

The router selects the second route, because this route matches the destination address 9.1.4.5 more accurately.

The router selects the second route, because the metric of RIP is smaller.

The router selects the second route, because the outbound interface is Ethernet0, which is faster than Serial0.

Which of the following statements about VLANs are incorrect ?

In inter-VLAN communication, the MAC address learned by a host is the MAC address of the destination host.

A VLAN can be considered as a collision domain.

In inter-VLAN communication, the MAC address learned by a host is the MAC address of the destination host.

A VLAN can be considered as a broadcast domain.

A VLAN can be considered as a collision domain.

VLANIF interfaces can be configured to implement interworking between VLANs.

Which of the following statements about static routes is correct?

Static routes are manually added to a routing table but are not dynamically updated by a routing protocol.

When the network topology changes, static routes need to be recalculated.

Static routes are learned from another routing protocol and imported to a local routing table.

Static routes have been set before a router is delivered to the market.

Which of the following statements about static route configuration is correct?

The mask parameter is mandatory.

The mask parameter is optional.

The mask parameter is mandatory.

Which of the following indicator status indicates that the MA5600T/MA5680T control board is running properly?

Green is on and is off repeatedly.

Green 0.5s on and 0.5s off repeatedly.

Green 0.25s on and 0.25s off repeatedly.

Which one of the following protection schemes can protect branch fibers?

GPON Type B single-homing protection

GPON Type B dual-homing protection

In a GPON network, DBA has the following functions:

Improves the upstream bandwidth utilization of a PON port.

Increases the upstream bandwidth of a PON port.

Improves the downstream bandwidth utilization of a PON port.

Improves the upstream bandwidth utilization of a PON port.

Which of the following statements are incorrect ?

GPON and XGS-PON have different rates but the same network architecture. Therefore, to ensure that the device supports XGS-PON, you only need to change the optical modules on an ONU.

The deployment of WDM1r multiplexers does not affect the calculation of optical link attenuation.

WDM1r multiplexers can be deployed close to the CO or user as required.

GPON and XGS-PON have different rates but the same network architecture. Therefore, to ensure that the device supports XGS-PON, you only need to change the optical modules on an ONU.

The deployment of WDM1r multiplexers does not affect the calculation of optical link attenuation.

Because the center wavelengths of XGS-PON and GPON are different and do not overlap or conflict with each other, they can share an optical distribution network (ODN).

Which of the following statements about the use of the ADSL interleave mode are correct?

Better stability and longer delay.

Worse stability and shorter delay.

Better stability and longer delay.

Better stability and shorter delay.

Worse stability and longer delay.

If a broadband user account passes the authentication but all web pages cannot be accessed, the possible causes can be:

The firewall settings of the PC are incorrect.

The Windows Internet Explorer settings on the PC are incorrect.

The data configuration of the upper-layer device is incorrect.

The firewall settings of the PC are incorrect.

The Windows Internet Explorer settings on the PC are incorrect.

The data configuration of the upper-layer device is incorrect.

During DHCP packet forwarding, a DHCP relay agent modifies the corresponding fields in a DHCP packet to complete packet type conversion. Which of the following statements is correct?

The DHCP relay agent converts received broadcast packets into unicast packets, and vice versa.

The DHCP relay agent converts non-Ethernet packets into Ethernet packets.

The DHCP relay agent converts only broadcast packets into unicast packets.

The DHCP relay agent converts received broadcast packets into unicast packets, and vice versa.

The DHCP relay agent transparently transmits unicast packets without changing the packets.

The customer needs to access the following information points: AP, PC, POTS, and CATV. Which of the following statements about data transmission of these information points by ONUs is correct?

When an OLT is connected downstream to an ONU, one fiber and two wavelengths are used to carry CATV and other services respectively. All services except CATV are encapsulated into Ethernet frames before PON encapsulation.

All types of data are encapsulated into Ethernet frames before PON-related encapsulation and transmission over one fiber.

When an OLT is connected downstream to an ONU, one fiber and two wavelengths are used to carry CATV and other services respectively. All services except CATV are encapsulated into Ethernet frames before PON encapsulation.

POTS voice services are TDM services and directly encapsulated in GEM frames.

When an OLT is connected downstream to an ONU, one fiber and two wavelengths are used to carry CATV and other services respectively. For all services except CATV, if POTS is a TDM service, it is transparently transmitted.