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Phung Manh Duc - Take Exam Exam questions Time remaining: 00: 07: 34 1 . What is the defined standard for the DCE/DTE interface? RS-232-C EIA/TIA-232 IETF DCE/DTE interface specification RFC 232 2 . Which of the following are true? Choose two. DTE = Data Terminal Equipment(PC’s, workstations, Mainframes) DCE = Data Communications Equipment(PC’s, workstations,Mainframes) DCE = Data Communications Equipment(modems, CSU/DSU’s) DTE = Data Terminal Equipment(modems, CSU/DSU’s) 3 . With asynchronous communication, which three of the eight pins in a DB25 connector are used to handle modem control? Choose three. Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 20 4 . Which command is used to enable asynchronous dialup on a serial interface? physical-mode async dialer-group layer async physical-layer async modem inout 5 . What are three functions that chat scripts perform? SNMP management modem configuration failure detection dialing and remote login 6 . Which one of the following modem commands on a USR modem shows the settings and configuration? AT and F ATI4 ATE0 ATM0 7 . With asynchronous communication, which three of the eight pins in a DB25 connector are used for data transfer? Choose three. Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 20 8 . Frame Relay describes the interconnection process between which two types of equipment? DTE and DTE DCE and DCE CPE and DTE CPE and DCE 9 . When a modem powers up, how does the connected computer know that the DCE is ready to use? The modem sets DTR pin 20 The modem sets DSR pin 5 The modem sets DSR pin 6 The modem sets DTE pin 4 10 . Which three statements are true regarding the command “telnet 10.10.30.4 2009”? It is used to reverse Telnet using port 2009. It is used to access port 2009 on a specific device. A modem is connected to line 9. It specifies a BRI connection to be used for Telnet. The “modem inout” command has not been configured on the line. 11 . Which command will allow a router to attempt to discover the modem to which it is attached? modem autoconfigure discovery modem discovery autoconfigure modem autoconfigure type discovery modem discovery type autoconfigure 12 . What are the three types of modulation within asynchronous signaling? parity amplitude frequency phase 13 . When configuring an asynchronous line, what is the result of issuing the command “flowcontrol hardware”? It sets RAM aside to buffer incoming and outgoing data. It sets the line to use CTS/RTS flow control. It sets the modem to handle flow control instead of the router. It sets the modem to use MNP4 firmware. 14 . On the digital end, a modem should be set: As fast as it can go (usually 115 Kbps) As slow as it can go At a speed that matches the modem’s capability At 56 KBPS 15 . What does the lock DTE modem attribute do? Protects the modem from being hacked Prevents the DCE from receiving information from the DTE Prevents the DTE from receiving information from the DCE Locks the data speed between the modem and the DTE device 16 . If you wish to add a new entry to the modem capabilities database, which command would you use? modem cap modem add set modem modem edit 17 . For the DTE to terminate an existing connection, it must: Drop DTR Drop CTS Send ATH to the DCE Drop CD 18 . What eight pins on a DB25 connector are used to connect a DTE? 2,3,4,5,6,7,8,20 1,2,3,4,5,6,7,8 2,4,5,6,7,8,9,20 2,3,4,5,6,7,9,20 19 . With asynchronous communication, which two of the eight pins in a DB25 connector are used to control the flow of data? Choose two. Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 20 20 . Which three commands are configured from the line configuration mode? encapsulation ppp async mode interactive modem inout speed 115200 flowcontrol hardware 21 . On an EIA/TIA-232 null modem cable with DB25 connectors, which two pins are cross- connected? Pin 2 Pin 3 Pin 4 Pin 5 Pin 7 Pin 8 22 . What occurs when there is no longer a signal on the DTR? The CD tells the DTE that a DCE-to-DCE connection has been established. The DTE issues a RTS to the DCE enabling communication. The DCE terminates its connection with the remote modem. The DTE applies voltage on pin 20 to alert the DCE that it is connected and available to receive data. 23 . Which signal indicates that the DTE is available to accept a call? DSR up RTS up CTS up DTR up 24 . What does a modem use to transmit data? TD CTS RTS RD 25 . Which two statements are true regarding the command “telnet 1.2.3.4 2007”? Establishes a reverse telnet connection The data is sent to individual line 2007 The data is sent to individual line 7 The data is sent to individual line 2 26 . On a Cisco 3640 Access router, what is the line number of the 8th port in slot number 1? 40 64 65 98 Showing page 1 of 1 : 1Go! © 2004 HanoiCTT. All rights reserved. 123doc.vn