Which of the following are VLAN frame. encapsulation types that may be configured on a Catalyst switch? (Choose two.)A. VTPB. ISLC. CDPD. 802.1QE. 802.1pF. LLC

题目

Which of the following are VLAN frame. encapsulation types that may be configured on a Catalyst switch? (Choose two.)

A. VTP

B. ISL

C. CDP

D. 802.1Q

E. 802.1p

F. LLC

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第1题：

A new switch is installed in the Ezonexam network. This switch is to be configured so that VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network.

Which of the conditions below have to be met in order for this to occur? (Choose all that apply).

A. The switch that will share the VLAN information must be in the VTP Server mode.

B. The switches must be in the same VTP domain.

C. The switch that will share the VLAN information must be configured as the root bridge.

D. The switches must be configured to use the same VTP version.

E. The switches must be configured to use the same STP version.

F. The switches must be configured to use the same type of ID tagging.

G. The switches must be connected over VLAN trunks.

正确答案：ABFG
A,B,F,G 解析：Explanation:
For the VLAN information to pass automatically throughout the network, VTP must be set up correctly. In order for VTP to work, a VTP server is needed, the VLAN's must be in the same VTP domain, and the encapsulation on each end of the trunk must both set to either 802.1Q or ISL.

Incorrect Answers:
C. Root bridges and other functions of the Spanning Tree Protocol (STP) have no impact of the VTP configuration.

D, E. There is only one version of VTP and STP.

第2题：

An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location? (Choose two)

A. The switch must be reachable through a port connected to its management VLAN.

B. The switch console port must be connected to the Ethernet LAN.

C. The switch must be fully configured as an SNMP agent.

D. The switch must be configured with an IP address, subnet mask, and default gateway.

E. The switch management VLAN must be created and have a membership of at least one switch port.

F. The switch must be connected to a router over a VLAN trunk.

正确答案：AD
A,D 解析：Explanation:
In order the telnet to any Cisco device, the device must be reachable from the remote location. For a Cisco switch to be reachable from remote locations, it must have an IP address, subnet mask, and default gateway assigned.

Communication with the switch management interfaces is through the switch IP address.
The IP address is associated with the management VLAN, which by default is VLAN 1

第3题：

Which of following VLAN frame. encapsulation types are configurable on a Cisco switch? (Select two answer choices.)

A. VTP

B. 802.1Q

C. LLC

D. ISL

E. CDP

F. PAP

正确答案：BD
B,D 解析：Explanation:
ISL and 802.1Q are the two trunking encapsulations that can be configured on a Cisco switch. ISL is Cisco proprietary and 802.1Q is the IEEE standard method.

Incorrect Answers:
A. VTP is the VLAN Trunking Protocol, which is used to carry VLAN information across the trunks. The question is asking for the encapsulation options for the trunk, which will be used by VTP.

C. LLC is the Logical Link Control, which is a sub-layer of the data link layer.

E. CDP is the Cisco Discovery Protocol, which is used by Cisco devices to discover information on neighboring Cisco devices.

F. PAP is the Password Authentication Protocol, which is used as an authentication mechanism on PPP links.

第4题：

A new switch is installed in the Testking network. This switch is to be configured sothat VLAN information will be automatically distributed to all the other Cisco Catalyst switches in the network.Which of the conditions below have to be met in order for this to occur?（）

A. The switch that will share the VLAN information must be in the VTP Server mode.

B. The switches must be in the same VTP domain.

C. The switch that will share the VLAN information must be configured as the root bridge.

D. The switches must be configured to use the same VTP version.

E. The switches must be configured to use the same STP version.

F. The switches must be configured to use the same type of ID tagging.

G. The switches must be connected over VLAN trunks.

参考答案：A, B, F

第5题：

Catalyst switches utilize a special technology to identify and prevent topology loops and ensure that data flows properly through a single network path. What is the name of this technology?()

A. VTP

B. ISL

C. 802.1Q

D. STP

E. None of the above

参考答案：D

第6题：

You need to create a new VLAN on your Catalyst switch. This VLAN is to be named EZONEXAM. Which of the following need to be completed for the creation of this new VLAN? (Select all that apply)

A. The EZONEXAM VLAN must be created.

B. The desired ports must be added to the new EZONEXAM VLAN.

C. The EZONEXAM VLAN must be added to all of the domains.

D. The EZONEXAM VLAN must be named.

E. An IP address must be configured for the EZONEXAM VLAN.

F. None of the above. VLAN creations are automatic.

正确答案：ABD
A,B,D 解析：Explanation:
Creating a VLAN is done in 3 steps:
1. Create the VLAN
2. Name the VLAN
3. Assign ports to the VLAN

From there, other features and functionality can be configured, but these are the only steps that are required for the addition of a VLAN.

Incorrect Answers:
C. The VLAN needs only to be added to a single switch, where it can act as a stand-alone VLAN, or it can be transferred to other switches in the network through the use of the VTP protocol.

E. VLANs operate at layer 2, and although many are configured with a layer 3 IP address, it is not absolutely necessary to do this.

第7题：

You are configuring a new Catalyst switch that you want to manage remotely from workstations on other network segments within your enterprise.Which of the following are required to allow remote management of the switch over IP?（）

A. The switch name must match the workgroup name of the local network.

B. The switch must be configured with an IP address and default gateway.

C. The remote workstations must have access to the management VLAN of the switch.

D. CDP must be enabled on the switch so that it can be located by other devices on the network.

参考答案：B, C

第8题：

Which encapsulation types are configurable on a Cisco switch for a trunk? (Select two answer choices)

A. VTP

B. ISL

C. CDP

D. 802.1Q

E. 802.1p

F. LLC

G. IETF

正确答案：BD
B,D 解析：Explanation:
Trunks are used to carry traffic belonging to multiple VLANs between devices over the same link. A device can determine which VLAN the traffic belongs to by its VLAN identifier. The VLAN identifier is a tag that is encapsulated with the data. ISL and 802.1q are two types of encapsulations used to carry data from multiple VLANs over trunk links.

ISL is a Cisco proprietary protocol for interconnecting multiple switches and maintaining VLAN information as traffic goes between switches. ISL provides VLAN trunking capabilities while maintaining full wire speed performance on Ethernet links in full-duplex or half-duplex mode. ISL operates in a point-to-point environment and will support up to 1000 VLANs.

In ISL, the original frame. is encapsulated and an additional header is added before the frame. is carried over a trunk link. At the receiving end, the header is removed and the frame. is forwarded to the assigned VLAN. .ISL uses Per VLAN Spanning Tree (PVST) which runs one instance of Spanning Tree Protocol (STP) per VLAN.

PVST allows for optimal root switch placement for each VLAN and supports load balancing of VLANs over multiple trunk links. 802.1Q is the IEEE standard for tagging frames on a trunk and supports up to 4096 VLANs. In 802.1Q, the trunking device inserts a four-byte tag into the original frame. and re-computes the Frame. Check Sequence (FCS) before sending the frame. over the trunk link. At the receiving end, the tag is removed and the frame. is forwarded to the assigned VLAN. 802.1Q does not tag frames on the native VLAN.

It tags all other frames transmitted and received on the trunk. While configuring a 802.1 trunk, you must make sure that the same native VLAN is configured on both sides of the trunk. IEEE 802.1Q defines a single instance of spanning tree running on the native VLAN for all the VLANs in the network which is called Mono Spanning Tree (MST). This lacks the flexibility and load balancing capability of PVST available with ISL. However, PVST+ offers the capability to retain multiple Spanning Tree topologies with 802.1Q trunking.

第9题：

Which interface commands would you enter on a Catalyst 2900 switch, if your goal was to bring all VLAN traffic to another directly connected switch?()

A. Switch(config-if)# vlan all

B. Switch(config-if)# switchport trunk encapsulation dot1q

C. Switch(config-if)# switchport access vlan all

D. Switch(config-if)# switchport mode trunk

E. Switch(config-if)# switchport access vlan 303

参考答案：C, D

第10题：

An administrator is configuring a Catalyst switch with VLAN information that must be automatically distributed to other Catalyst switches in the network.What conditions must be met in order for the VLANs configured on this switch to be automatically configured on the other switches?（）

A. The switch that will share its VLAN configuration must be in VTP server mode.

B. The switches must be in the same VTP domain.

C. The switch that will share the VLAN information must be configured as the root bridge.

D. The switches must be connected over VLAN trunks.

E. The switches must be configured to use the same STP version.

F. The switches must have VTP pruning activated.

参考答案：A, B, D

Which of the following are VLAN frame. encapsulation types that may be configured on a Catalyst switch? (Choose two.)A. VTPB. ISLC. CDPD. 802.1QE. 802.1pF. LLC

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