| Question 1 | Which of the following should you do if a router's interface is administratively down? [Choose the two best answers.] -
A. Check the cabling. -
B. Check whether the interface is manually shut down. -
C. Check for duplicate IP addresses. -
D. Check with the local service provider. |
| A1: | Answer: B, C . If the interface is administratively down, you should check that the interface is not manually shut down or that a duplicate IP address is not configured on another interface. |
| Question 2 | Which of the following are displayed when using the show interface serial command? [Choose the two best answers.] |
| A2: | Answer: A, B . The show interface serial command displays error information as well as the encapsulation type configured on the interface. The AUI interface is not a serial interface and the command does not display the switch model information. |
| Question 3 | Using the debug serial interface command displays which of the following information fields? -
A. mineseen -
B. myseq -
C. yourseen -
D. All of the above -
E. None of the above |
| A3: | Answer: D . The debug serial interface command displays the mineseen, myseq, and yourseen fields. |
| Question 4 | Which of the following elements are displayed by using the show controller serial command? [Choose the two best answers.] -
A. Clock rate -
B. Cable type -
C. LMI type -
D. Error information |
| A4: | Answer: A, B . The show controller serial command displays the clock rate and cable type. It does not display the LMI type or the error information. |
| Question 5 | Which of the following commands displays the FECN and BECN statistics? -
A. show x25 events -
B. show frame-relay pvc -
C. show interface serial -
D. show running-config |
| A5: | Answer: B . The show frame-relay pvc command displays the FECN and BECN statistics. |
| Question 6 | Which encapsulation is used by default on Cisco serial interfaces? -
A. HDLC -
B. Frame Relay -
C. SDLC -
D. X.25 |
| A6: | Answer: A . The default encapsulation type used on Cisco serial interfaces is HDLC. |
| Question 7 | If the keepalives are not sequencing on a serial interface, which of the following is not a troubleshooting step? -
A. Check the local hardware. -
B. Check for noise on the line. -
C. Check for a timing mismatch. -
D. Check the local router's hostname. |
| A7: | Answer: D . If the keepalives are not sequencing on a serial interface, you should check the local hardware, check for noise on the line, and check for a timing mismatch. Regardless of whether a hostname is configured, it will not affect any functioning component of the router. |
| Question 8 | To test end-to-end connectivity on a serial link, which of the following would be used? -
A. Route trace test -
B. SNMP test -
C. Loopback test -
D. Connectivity test -
E. Ping 127.0.0.1 |
| A8: | Answer: C . To test end-to-end connectivity on a serial link, you would use one of the different loopback tests. |
| Question 9 | The following output is displayed using which of the following commands? Serial0 is up, line protocol is up Hardware is HD64570 Internet address is 63.78.39.174/24 MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation FRAME-RELAY IETF, loopback not set, keepalive set (10 sec) LMI enq sent 270, LMI stat recvd 127, LMI upd recvd 0, DTE LMI up LMI enq recvd 119, LMI stat sent 0, LMI upd sent 0 LMI DLCI 1023 LMI type is CISCO frame relay DTE Broadcast queue 0/64, broadcasts sent/dropped 22/0, interface broadcasts 0 Last input 00:00:06, output 00:00:06, output hang never Last clearing of "show interface" counters 02:51:08 Input queue:0/75/0(size/max/drops); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) -
A. show frame-relay map -
B. show interface -
C. show frame-relay pvc -
D. show frame relay lmi |
| A9: | Answer: B . The output displayed is from the show interface command. |
| Question 10 | If you need to connect a Cisco router to a non-Cisco device, which encapsulation type would you use? -
A. DLCI -
B. X.25 -
C. ANSI -
D. Cisco -
E. IETF |
| A10: | Answer: E . To connect a Cisco router to a non-Cisco device, you need to use the IETF encapsulation type. |
