Which two link protocols are used to carry multiple VLANs ov

第1题：

Which two statements about voice VLANs are correct？（）

• A、Voice VLANs eliminate the need for QoS configuration
• B、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markings
• C、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the network
• D、Voice VLANs can be configured to forward existing CoS priorities or override them
• E、Voice VLANs are mainly used between access layer switches and distribution layer switches
• F、Voice VLANs can be configured on Layer 2 ports only

第2题：

In a RSTP implementation, which of the following two link types are used? （）(Choose two.)

• A、Shared
• B、Point-to-Point
• C、Designated
• D、Multiaccess non-broadcast

第3题：

第4题：

What are some of the characteristics of a typical VLAN arrangement?（）

• A、VLANs logically divide a switch into multiple, independent switches at Layer 2.
• B、Trunk links can carry traffic for multiple VLANs.
• C、VLAN implementation significantly increases traffic due to added trunking information.
• D、A VLAN can span multiple switches.
• E、VLANs typically increase the number of switches needed
• F、VLANs typically decrease the number of switches needed

第5题：

Which one of the WAN data-link protocols below is used for out-of-band signaling?（）

• A、HDLC
• B、NCP
• C、PAP
• D、LAPD
• E、LAPB
• F、None of the above

第6题：

Which two statements are true about the protocols that are used for transmitting voice traffic？（）

• A、RTP multiplexing is used to keep multiple phone conversations separate
• B、RTP provides end-to-end delivery services for voice traffic
• C、UDP is used to ensure a reliable transmission from sender to receiver
• D、RTP is used to provide resource reservation for the voice stream
• E、UDP provides multiplexing

第7题：

What are some characteristics of the typical VLAN arrangement?（）

• A、VLANs logically divide a switch into multiple, independent switches at Layer 2.
• B、Trunk links can carry traffic for multiple VLANs.
• C、VLAN implementation significantly increases traffic due to added trunking information.
• D、A VLAN can span multiple switches.
• E、VLANs extend the collision domain to include multiple switches.
• F、VLANs typically decrease the number of multiple switches.

第8题：

第9题：

What is the role of route preference?（）

• A、It is used as a tiebreaker when the same prefix is available through multiple protocols.
• B、It is used to determine the preferred path to a given destination.
• C、It is used to select the best route between multiple equal-cost paths.
• D、It is used to select which routing table to use for forwarding.

第10题：

Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）

• A、802.1d
• B、VTP
• C、802.1q
• D、STP
• E、SAP