首 页
大学试题
CMS专题
工学
经济学
专升本
法学
教育学
历史学
更多分类
搜索
题库考试答案搜索网 > 题目详情
当前位置：
首页
>
In the data link layer, the data unit is called(71)．
>
题目详情
问题题干
答案解析
相关问题
热门问题
最新问题
问题详情
In the data link layer, the data unit is called(71)．
A、flame
B、Packet
C、Signal
D、APDU
时间：2022-01-08 14:33
关键词：
答案解析
A
解析：在数据链路层，数据单元被称作帧。
相关问题
Data communications equipment (DCE) accepts the serial data stream from the DTE.
The dataflow diagram is a graphical chart that depicts the flow of data among internal process, external entities, and data stores.
WAN data link encapsulation types include which of the following?（）
The United States today is the （）largest country in size in the world.
Why does the data communication industry use the layered OSI reference model (Choose two.)（）。
最新问题
Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?（）
Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?
Consider the Mysql Enterprise Audit plugin. A CSV file called data.csv has 100 rows of data. The stored procedure prepare_db ( ) has 10 auditable statements. You run the following statements in the mydb database: Mysql＞ CALL prepare_db ( ); Mysql＞ LOAD DATA INFILE '/tmp/data.cav' INTO TABLE mytable; Mysql＞ SHOW TABLES; How many events are added to the audit log as a result of the preceding statements?（）
An IBM XIV system with nine modules and 2 TB disks is being proposed to a customer who needs to increase disk capacity in the data center. The customer is concerned about data growth andcost after the initial purchase. Which of the following factors of the solution should be stressed to the customer to address data growth?（）
In the open systems interconnection (OSI) reference model, "layer" means one of seven conceptually complete,(71) arranged groups of services, functions, and protocols, that extend across all open systems.Application layer provides means for the application(72) to access the OSI environment. Presentation layer provides for the selection of a common syntax for representing data.(73) layer provides the means necessary for cooperating presentation entities to organize and synchronize their dialog and to manage their data exchange. Transport layer provides a reliable end-to-end data transfer service. Network layer provides for the entities in the transport layer the means for transferring blocks of data, by(74) and switching through the network between the open systems in which those entities reside. Data link layer provides services to transfer data between network layer entities. Physical layer provides the mechanical, electrical, functional, and procedural means to establish, maintain and(75) physical connections for transfer of bits over a transmission medium.
A Windows Communication Foundation (WCF) application uses a data contract that has several data members. You need the application to throw a SerializationException if any of the data members are not present when a serialized instance of the data contract is deserialized.What should you do?（）
An application architecture specifies the technologies to be used to implement one or more information systems． It serves as an outline for detailed design， construction， and implementation． Given the models and details， include（ ）， we can distribute data and processes to create a general design of application architecture． The design will normally be constrained by architecture standards， project objectives， and （ ）． The first physical DFD to be drawn is the（ ）． The next step is to distribute data stores to different processors． Data（ ） are two types of distributed data which most RDBMSs support． There are many distribution options used in data distribution． In the case of （ ）we should record each table as a data store on the physical DFD and connect each to the appropriate server．
Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?（）
In the data link layer, the data unit is called(71)．
In data communication, data link is those parts of two data terminal equipments that are controlled by a protocol along with the(71) data circuit, which together enable data(72). So-called protocol means, in short, a set of rules that determines the behavior. of functional units in achieving communication.Data circuit, however, consists of a pair of(73) transmission channels that provides a means of two-way data transmission. Between data switching exchanges, the data circuit may or may not include data circuit-terminating equipment (DCE), depending on the type of(74) used at the data switching exchange. Between a data station and a data switching exchange or data concentrator, the data circuit includes the DCE at the data station end, and may include equipment(75) to a DCE at the data switching exchange or dam concentrator location.
别人在看
题库考试答案搜索网 > 题目详情
题库考试答案搜索网 > 题目详情