移动通信机务员鉴定
下列有关ISL（Inter Subrack Link）的描述哪个（些）是正确的？（）A、MGW机箱之间ATM信元传送通过ISL电缆来完成，ISL分为控制链路（control link）和应用链路（application link）B、ISL电缆可以连接主机箱（或Central Processor ModulE.与扩展机箱，也可以实现两个扩展机箱之间的互联C、每块SCB和SXB板都可提供4个主用的ISL接口与其它机箱进行互联D、在ISL上包含TUB产生的系统时钟和从ET板上提取出来的参考时钟
题目
下列有关ISL（Inter Subrack Link）的描述哪个（些）是正确的？（）
- A、MGW机箱之间ATM信元传送通过ISL电缆来完成，ISL分为控制链路（control link）和应用链路（application link）
- B、ISL电缆可以连接主机箱（或Central Processor ModulE.与扩展机箱，也可以实现两个扩展机箱之间的互联
- C、每块SCB和SXB板都可提供4个主用的ISL接口与其它机箱进行互联
- D、在ISL上包含TUB产生的系统时钟和从ET板上提取出来的参考时钟
相似问题和答案
第1题：
A.Inter-NodeB的切换是Radio Link Addition Request
B.Intra-NodeB的切换是Radio Link Addition Request
C.Inter-NodeB的切换是Radio Link SetupRequest
D.Intra-NodeB的切换是Radio Link Setup Request
E.Inter-NodeB的切换是Radio Link Reconfiguration Request
第2题：
LTE定时同步包话()
A.无线键盘检测( Radio link monitoring)
B.小区间同步(Inter-cell synchronisation)
C.发设定时调整(Transmission timing adjustment)
D.系统间同步
第3题：
A、CINAHL
B、Ovid
C、Science direct
D、Springer link
第4题：
SUBRACK和I系列MSC中，GSW的最大容量。
正确答案: SUBRACK MSC://1024x1024；
I系列MSC://2048x2048
第5题：
A、ISL(Inter Switch Link )
B、IEEE802.1Q
C、IEEE802.1D
D、VTP(VLAN Trunking Protocol)
第6题：
You need to decide on which trunking method to implement in the Ezonexam network. What is a characteristic of ISL and 802.1q frame. tagging in a switched LAN environment?
A．They are used to find the best path through a network.
B．They allow the exchange of filtering tables.
C．They specify different implementations of the Spanning-Tree Protocol.
D．They allow the exchange of routing tables
E．They provide inter-switch VLAN communication.
解析：Explanation: A trunk link is the other type of Layer 2 port supported on Cisco switches. When a trunk port is configured, it begins marking frames as they exit the port to indicate which VLAN each frame. is associated with.
The trunk port can also read the markings, called tags, as they enter the trunk port. This enables the switch to send a frame. only to the ports for the given VLAN associated with the incoming frame. The main purpose of trunking is to carry traffic between switches and maintain the VLAN information.
Unlike an access link, the trunk link does not belong to a single VLAN but instead can carry traffic from several VLANs over a point-to-point link between two devices that understand the protocol. Two forms of trunking are used for Cisco switches on Ethernet networks: An IEEE industry standard called IEEE 802.1Q.
This is a frame-tagging mechanism that adds a VLAN identifier to the frame. by inserting a tag at Layer 2. Another form. of trunking on Cisco switches is called Inter-Switch Link (ISL), which is a Cisco proprietary trunking mechanism. ISL uses a frame. encapsulation method that adds a header to identify the VLAN.
Incorrect Answers:
A, D. These are the functions of routers, not switches.
B. Filtering tables can be used on certain Catalyst switches via the use of VLAN access control lists, but this information is never shared between switches.
C. A separate STP instance is created for each VLAN, but the STP implementation remains the same.
第7题：
关于组织凝血活酶的叙述，不正确的是
A．PT测定与试剂质量有关
B．67／／40批号的ISl定为2．0
C．ISl值越低说明该试剂越敏感
D．ISl与INR的计算有直接关系
E．ISl通常由厂家提供
第8题：
A、Science Direct
B、Wiley Inter Science
C、Sinomed
D、Journals Ovid
第9题：
A. performing inter - VLAN routing
B. performing 802.1Q trunking
C. performi ng ISL trunking
D. Ethernet Switch Module installed
E. ADSL WIC installed
F. running Call Manager Express
第10题：
在OSPF中，Link State ID是LSA所描述的那部分链路的标识，下列对于不同类型LSA的Link State ID描述正确的是（）。
- A、Router LSA的Link State ID是该路由器所连接的网段
- B、Network LSA的Link State ID是所描述网段上DR的端口IP地址
- C、Network Summary LSA的Link State ID是所描述的目的网段地址
- D、ASExternal LSA的Link State ID是所描述的ASBR的Router ID
正确答案:B,C