GB0-191-ENU

 During the removal of the TCP connection as shown in the figure , the X part of the ACK should be filled with ______ . A . pB . qC . p+1D . q+1View AnswerAnswer:   C Explanation: X = p + 1 , B receives the connection termination request segment sent by A , confirms, and closes the connection at the same time

 In the Open System Interconnection Reference Model ( OSI ), ______ transmits data streams in the form of frames.A .  Network layerB .  Session layerC .  Transport layerD .  Data link layerView AnswerAnswer:   D

 Which of the following statements about MAC addresses are wrong ? (Multiple Choice)A .  Ethernet uses MAC address to identify the hostB . MAC address is a logical address that is easy to changeC . The MAC address is fixed in the ROM , usually cannot be changedD .  Usually only the terminal host needs the MAC address, routers and other network devices do not...

 There is a default route in the router's routing table, the destination network segment and mask are 0.0.0.0 , and the next hop is the router's S0 / 0 interface, then the following description of this route is correct ______ . (Multiple choices)A .  When the router receives a packet destined to the destination address 120.1.1.1 , if there is no...

The following equipment working on the data link layer of the OSI reference model is ______ .A .  WAN switchB .  RouterC .  RepeaterD .  HubView AnswerAnswer:   A

The 802.11b protocol defines 14 channels in the 2.4 GHz frequency band , and there is overlap in spectrum between adjacent channels. In order to maximize the use of frequency band resources, which of the following channels can be used for wireless coverage ?A . 1 、 5 、 9B . 1 、 6 、 11C . 2 、...

 Use the ______ command to specify the operating system software to be used next time.A . startupB . boot-loaderC . bootfileD . boot startupView AnswerAnswer:   B Explanation: boot- loader - load application file P192

The following statement about the IP address is correct ______ . (Multiple choices)A . The IP address can be fixed in the hardware and is a unique MACB . IP addresses are divided into five categories : A , B , C , D , and EC . IP addresses are usually expressed in dotted hexadecimal, for example: 10.110.192.111D . The IP address is composed of 32 binary bitsView AnswerAnswer:   BD Explanation: IP address dotted...

DNS works on the OSI reference model ______ .A .  Network layerB .  Transport layerC .  Session layerD .  Application layerView AnswerAnswer:   D

The IP address 133.18.2.110 is the ______ address.A . A DeliverableB . B class CC class DD typeView AnswerAnswer:   B