思科认证考试
Which two of these are recommended practices with trunks？ （）A、 use ISL encapsulationB、 use 802.1q encapsulationC、 set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiationD、 use VTP server mode to support dynamic propa
题目
Which two of these are recommended practices with trunks？ （）
- A、 use ISL encapsulation
- B、 use 802.1q encapsulation
- C、 set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
- D、 use VTP server mode to support dynamic propagation of VLAN information across the network
- E、 set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.
相似问题和答案
第1题：
A. MD5 authenticaton is supported by the Junos OS
B. Server mode is not supported by the Junos OS
C. The Junos OS can provide a primarytime reference
D. The Junos OS does not support the use of a boot server
第2题：
A new switch is being installed and you have been assigned the task of connecting it to an existing switch. In doing this, you want to set up the VLAN Trunking Protocol so that VLAN information can be passed between the switches.Which of the following must you do to accomplish this?（）
A. You must set each end of the trunk line to IEEE 802.1e encapsulation.
B. You must set the same VTP management domain name on both switches.
C. You must set all ports on the two switches as access ports.
D. You must configure one of the switches as a VTP server.
E. You must use a rollover cable to connect the two switches.
第3题：
What must the Ezonexam network administrator do in order to successfully configure a VLAN trunk between two switches named VE1 and VE2? (Select two answer choices)
A. Set each end of the trunk line to IEEE 802.1Q encapsulation.
B. Set the same VTP management domain name on both switches.
C. Set all ports on the two switched as access ports.
D. Configure one of the two switches as a VTP server.
E. Connect the two switches using a rollover cable.
F. Use a router to forward VTP traffic between the VLANs.
B,D 解析：Explanation:
All servers that need to share VLAN information must use the same domain name, and a switch can only be in one domain at a time. This means that a switch can only share VTP domain information with other switches if they're configured into the same VTP domain. You can use a VTP domain if you have more than one switch connected in a network, but if you've got all your switches in only one VLAN, you don't need to use VTP. VTP information is sent between switches via a trunk port.
Switches advertise VTP management domain information, as well as a configuration revision number and all known VLANs with any specific parameters. There's also something called VTP transparent mode, in it, you can configure switches to forward VTP information through trunk ports, but not to accept information updates or update their VTP databases. At least one of the switches will need to be configured as the VTP server in order to pass the VLAN info.
Incorrect Answers:
A. Although this is a valid option, it is not a requirement since using ISL as the encapsulation type is also a valid option.
E. A rollover cable is not used between switches for any of the port types.
F. Routers will be required for sending traffic from one VLAN to the other, but not to forward the actual VTP traffic.
第4题：
Which two DTP modes will permit trunking between directly connected switches？（）
- A、dynamic desirable （VTP domain A） to dynamic desirable （VTP domain A）
- B、dynamic desirable （VTP domain A） to dynamic desirable （VTP domain B）
- C、dynamic auto （VTP domain A） to dynamic auto （VTP domain A）
- D、dynamic auto （VTP domain A） to dynamic auto （VTP domain B）
- E、dynamic auto （VTP domain A） to nonegotiate （VTP domain A）
- F、nonegotiate （VTP domain A） to nonegotiate （VTP domain B）
正确答案:A,F
第5题：
he network administrator is trying to add Switch1 to the network， but the 802.1Q trunk is not coming up. Switch1 was previously tested in the laboratory and its trunk configuration worked fine. What are three possible causes of this problem？（）
- A、The trunking configuration mode on Switch1 is set to Off.
- B、The trunking configuration mode on the other end is set to On.
- C、The trunking configuration mode on the other end is set to Desirable.
- D、Cisco Discovery Protocol is not running on the other end.
- E、There is a VTP domain name mismatch.
- F、Switch1 does not support 802.1Q
正确答案:B,C,E
第6题：
A. Set each end of the trunk line to IEEE 802.1Q encapsulation.
B. Set the same VTP management domain name on both switches.
C. Set all ports on the two switched as access ports.
D. Configure one of the two switches as a VTP server.
E. Connect the two switches using a rollover cable.
F. Use a router to forward VTP traffic between the VLANs.
第7题：
A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network
E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.
第8题：
A. MD5 authentication is supported by the Junos OS
B. Server mode is not supported by the Junos OS
C. The Junos OS can provide a primary time reference
D. The Junos OS does not support the use of a boot server
第9题：
Which of the following technologies would an Internet Service Provider use to support overlapping customer VLAN ID’s over transparent LAN services？ （）
- A、 802.1q tunneling
- B、 ATM
- C、 SDH
- D、 IP Over Optical Networking
- E、 ISL
正确答案:A
第10题：
You need to connect two Company core switches via an ISL trunk. Which statement is true regarding the configuration of ISL trunks？ （）
- A、 A Catalyst switch cannot have ISL and IEEE 802.1q trunks enabled.
- B、 All Catalyst switches support ISL trunking.
- C、 A Catalyst switch will report giants if one side is configured for ISL while the other side is not.
- D、 ISL trunking requires that native VLANs match.
- E、 None of the other alternatives apply
正确答案:C