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1. Name 3 types of console connectors found on Cisco routers? a. DB-25 b. DTE c. DB-9 d. DB-15 e. RJ-11
Answer: a,c,g
DB-25; f. XJ-8 g. RJ-45 h. DB-60
DB-9; RJ-45; The RJ-45 is the most commonly found console port connector, but some Cisco equipment does use female DB-25 & DB-9 serial connectors
2. What type of synchronous serial connector is typically found on a Cisco router? a. DB-25 e. RJ-45
Answer: b b. DB-60 f. RS-232 c. DB-15 g. RS-442 d. DB-9
3. Which format describes the serial interface 0 on port adapter I on slot 3 of a Cisco 7500 series router? a. Serial 013 d. Serial 3/1/0 b. SerialO-1-3 e. Serial 1/0/3 c. Serial 0/1/3
Answer: d
Serial 3/1/0 The format goes from the major component to the smaller components. Here it is slot 3; port adapter 1; serial interface 0
4. Which pins are used for transmission with 10Base-T using an RJ-45 connector? a. 1 and 3 b. 2 and 6 c. 1 and 2 d. 3 and 6 e. 3 and 4
Answer: c f. 7 and 8 g. 5 and 9
Pin 1 is Tx+ and Pin 2 is Tx-
5. Which format describes the serial interface 0 on slot 1 of a modular 2600 series access router? a. Serial 10 b. Serial 1-0 c. Serial 1/0 d. Serial 1\0 e. Serial 01
Answer: c
Serial 1/0 f. Serial 0/1 g. Serial 0\1 note that the numerical delimiter is always a 'forward' slash and the specification is always from the major interface down to the smaller sub-unit interface
6. Which cable end is needed when connecting the serial interface to a Cisco router from a Telco Service Provider's
CSU/DSU? a. U b. DCE c. DTE d. DB-15 e. RJ-45 f. RS-232 g. S/T h. AUI
Answer: c
DTE; The Telco's CSU/DSU will almost always be providing the clocking signal which would make it a DCE; therefore the end connected to the router will have to be a DTE
7. Which cable would be used to connect a router's Ethernet port to a catalyst switch port? a. rollover e. DB-60
Answer: d b. DTE/DTE f. DCE c. DTE g. crossover d. straight-thru h. DCE/DTE i. DCE/DCE
All of the ports on a catalyst are 'crossed-over', just like a hub, & the router's Ethernet ports are straight-thru

8. What: config-register setting configures the router to enter ROM Monitor mode? a. 0x0 b. 0x1 c. 0x2 d. 0x3 e. 0xF f. none of these
Answer: a
0x0 stored in the boot field of the configuration register will cause the router to enter ROM monitor mode upon reboot
9. What is the name for the 16-bit value that determines a router's boot procedure? a. Command Register b. Configuration Register c. Boot Register d. Flash Register e. Boot Field
Answer: b
The configuration Register is a 16-bit register
10. Which configuration register setting will force the router to load an IOS image from the boot ROM upon reload a. 0x2100 e. All the previous b. 0x2101 f. None of these c. 0x2102 d. x2142
Answer: b
The key value here is the that the first digit is a one: 0x2101 also seen frequently 0x0101
11. What configuration register setting is used on a router to force it to boot from flash but ignore its saved configuration? a. 0x2100 b. 0x2101 c. 0x2102 d. 0x2142
Answer: d e. 0x210F
0x2142; the second digit must be a 4, which sets bit # 6 to ignore nvram
12. What IOS command can be used to display the configuration register? a. show config d. show nvram b. show register e. show startup c. show version f. show running-config
Answer: c
13. How long does a user have to issue a break sequence upon restarting a router to enter ROM Monitor mode? a. 10 seconds b. 15 seconds c. 2 minutes d. 90 seconds f. 30 seconds e. 1 minute
Answer: e 60 seconds - 1 minute
14. What two commands can be used to change the configuration register on a Cisco IOS router? a. register d. config-register
Answer: d,e b. set register e. confreg c. configure
The 2500 series routers and some others use the command: config-register. The 2600 series routers and some others use the command: confreg.
15. Which TWO of the following commands would set the bandwidth of Serial 0 to T1 speed a. Router(config)#band width t1 b. Router(config-if)#bandwidth t1 c. Router(config)#bandwidth 1544k d. Router(config-if)#bandwidth 1544 e. Router(config)#band width 1544000 f. Router(config-if)#bandwidth 1544000 g. Router(config-if)#bandwidth s0 1544000 h. You normally need to do nothing, the default bandwidth is already set to T1 speed
Answer: d,h A key point to be aware of is that you must be on the interface configuration mode

16. What is the wide area networking acronym that describes the default router device type? a. DCE b. DXE c. DTE d. CO f. ATM g. FRAD e. CPE
Answer: c
17. You do a show interface command and the status is:
Serial0 is up, line protocol is down
Which THREE of the following statements may explain this message? a. A physical problem exists on the interface b. Both the local & remote interfaces are configured as DCE's c. Neither the local nor remote interfaces are configured as a DCE d. The local interface is in a shutdown interface mode e. The remote interface has been administratively shut down f. There is a problem with the physical cabling between the 2 routers g. The frame type is incorrectly configured h. The IP addresses on each end are not on the same logical network i. You issued the show interface command from user mode not privileged mode
Answer: b,c,g
The last one about the IP addresses is wrong because that would be a layer 3 issue that would be unknown at the layer 2 protocol level that the interface status reflects. Also if the remote interface is administratively shut down; the local interface would be the same Serial0 is down; just as if there were no cable connected between them. Also if the interface is bouncing back & forth between line protocol is up & line protocol is down; this frequently indicates that ppp authentication has been configured but is not being correctly negotiated. The last choice is also bogus because you cannot do a show interface command from user mode
18. Which of the following commands would you use to set the clockrate on interface Serial 0 to 64 kbps? a. Router(config)#clockrate 64 b. Router(config)#clockrate 64k c. Router(config)#clock rate 64000 d. Router(config)#clock rate 64 k e. Router(config-if)#clock rate 64000 f. Router(config-if)#clock rate 64 g. Router(config-if)#clockrate 64000 h. Router(config-if)#clock rate 64 k
Answer: e
19. What are TWO Rom Monitor mode commands to change the value of the Configuration Register? a. configreg e. config-register b. o/r f. show version c. confreg g. 0x0 d. o\r
Answer: b,c
'o/r' is used on the 2500 series routers and some others; 'confreg' is used on 2600 series routers and others.