GB0-192-ENU

In the command line, if the user wants to return to the previous view from the current view, he should use ______.A . return commandB . quit commandC . <Ctrl+z> keyD . <Ctrl+c> keyView AnswerAnswer: B

When the source host pings the destination device, if the network is working normally, the destination device will respond with an ICMP______ message to the source host after receiving the message.A . Echo RequestB . Echo ReplyC . TTL-ExceededD . Port-UnreachableView AnswerAnswer: B

On the MSR router, by default, the configuration file is suffixed with ______.A . .binB . .sysC . .txtD . .cfgView AnswerAnswer: D

The command to configure the bridge priority of the switch SWA to 0 is ______.A . [SWA] stp priority 0B . [SWA-Ethernet1/0/1] stp priority 0C . [SWA] stp root priority 0D . [SWA-Ethernet1/0/1] stp root priority 0View AnswerAnswer: A

Which of the following options describes parameters that uniquely determine a TCP connection?A . Source port number, source IP addressB . Destination port number, destination IP addressC . Source port number, destination port numberD . Source MAC address, destination MAC addressE . None of the above is correctView AnswerAnswer: E

802.1x defines a port-based network access control protocol, and only defines the point-to-point connection method between access devices and access ports. The access port can only be a physical port.A . TrueB . FalseView AnswerAnswer: B

SSH uses the TCP port number ______ by default.A . 20B . 21C . 22D . 23View AnswerAnswer: C

Normally, routers will fragment packets whose length is greater than the interface MTU. In order to detect the line MTU, you can ping the destination address with the ______ parameter.A . -aB . -dC . -fD . -cView AnswerAnswer: C

The main function of the physical layer of the OSI reference model is ______.A . Physical address definitionB . Establish an end-to-end connectionC . Transmitting bit streams between terminal devices, defining voltage, interface, cable standard and transmission distance, etc.D . Transfer data from one host to anotherView AnswerAnswer: C

During the establishment process of the TCP connection as shown in the figure, the Z part in SYN should be filled with ________. A . aB . b.C . a+1D . b+1View AnswerAnswer: D