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8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 1/35
What is the normal configuration register for a Cisco router?
0x2132
0x2102
0x2112
0x2142
Question 2:
On which OSI layer does a hub operate?
1
23
4
Question 3:
How many collision domains exist on an 8 port hub?
1
5
8
12
Question 4:
How many collision domains exist on a 24 port switch?
1
12
24
48
Question 5:
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 2/35
Which one of these IP addresses is a network address?
10.5.103.45/8
192.168.90.87/2910.255.0.32/24
172.18.13.164/30
Question 6:
Which one of these IP addresses is a host address?
172.24.0.0/16
10.128.15.66/26
192.168.15.128/25
10.18.24.32/28
Question 7:
Which 3 are choices for the "duplex" interface configuration mode command?
auto
onoff
half
full
semi
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 3/35
Question 8:
Which 2 are possible choices for the "speed" interface configuration mode command?
1
on
10
full
max
100
Question 9:
How many broadcast domains exist on a 48 port switch with 7 VLANs?
48
24
1
7
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 4/35
Question 10:
What command is used to see the root bridge for VLAN 22 only?
show ip interface brief
show spanning-tree
show spanning-tree vlan 22 summary
show spanning-tree vlan 22
Question 11:
Which trunking protocol encapsulates the whole frame?
VTP
ISL
DTP
802.1q
Question 12:
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 5/35
Which feature allows a port to start forwarding when plugged in?
Portfast
STPBPDU Guard
Root guard
Question 13:
What protocol(s) does DNS use?
UDP and ICMP
TCP and UDP
TCP and HTTP
ICMP
Question 14:
Users from 192.168.11.128 network have started complaining that they have lost
connectivity to the 192.168.11.0 network. After kicking a Jr. Network Associate off thenetwork and sending him out to get you coffee, you isolate the network outage down to
Router 3. Using the diagram and output below, determine which set of commands will
allow R3 to re-converge with the rest of the network.
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 6/35
Code:
R1#debug ip ripRIP protocol debugging is on
R1#
*Mar 1 00:27:03.143: RIP: sending v2 update to 224.0.0.9 via Serial0/0 (222.16.2.6)
*Mar 1 00:27:03.147: RIP: build update entries*Mar 1 00:27:03.147: 222.16.2.8/30 via 0.0.0.0, metric 1, tag 0
*Mar 1 00:27:03.263: RIP: sending v2 update to 224.0.0.9 via Serial0/1 (222.16.2.9)
*Mar 1 00:27:03.267: RIP: build update entries*Mar 1 00:27:03.267: 192.16.11.128/25 via 0.0.0.0, metric 2, tag 0
*Mar 1 00:27:03.271: 222.16.2.4/30 via 0.0.0.0, metric 1, tag 0
R1#*Mar 1 00:27:08.827: RIP: ignored v1 packet from 222.16.2.10 (illegal version)
Code:
R3#debug ip rip
RIP protocol debugging is onR3#
*Mar 1 00:09:11.623: RIP: sending v1 update to 255.255.255.255 via FastEthernet0/0
(192.168.11.1)
*Mar 1 00:09:11.627: RIP: build update entries*Mar 1 00:09:11.627: network 222.16.2.0 metric 1
R3#*Mar 1 00:09:12.775: RIP: sending v1 update to 255.255.255.255 via Serial0/0
(222.16.2.10)
*Mar 1 00:09:12.775: RIP: build update entries*Mar 1 00:09:12.775: network 192.168.11.0 metric 1
R3#do s
8/4/2019 Sample Ccna Questions
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*Mar 1 00:09:33.131: RIP: ignored v2 packet from 222.16.2.9 (illegal version)
R3#show ip protoCode:
R3#show ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not setIncoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 20 seconds
Invalid after 180 seconds, hold down 180, flushed after 240Redistributing: rip
Default version control: send version 1, receive any version
Interface Send Recv Triggered RIP Key-chain
FastEthernet0/0 1 1Serial0/0 1 1
Automatic network summarization is in effect
Maximum path: 4
Routing for Networks:192.16.11.0
222.16.2.0Routing Information Sources:
Gateway Distance Last Update
222.16.2.9 120 00:00:16
Distance: (default is 120)R3(config)#interface s0/0
R3(config-if)#ip rip send version 2
R3(config-if)#ip rip receive version 2
R3(config-if)#router ripR3(config-router)#version 2
R3(config-router)#default version
R3(config-router)#network 192.168.11.0
R3(config-router)#network 222.16.2.0
R3(config)#interface fastEthernet 0/0
R3(config-if)#ip address 192.168.11.1 255.255.255.252
R3(config-if)#no shutdown
8/4/2019 Sample Ccna Questions
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Question 15:
Sales has lost connectivity to Accounting. Which commands need to be entered to allow
Sales to communicate with Accounting?
Code:
R2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/1 192.168.11.130 YES NVRAM up upSerial0/0 10.22.128.129 YES NVRAM administratively down down
Serial0/1 unassigned YES NVRAM administratively down down
R2(config)#interface s0/0R2(config-if)#ip address 10.22.128.132 255.255.255.252
R2(config-if)#no shutdown
R1(config)#interface s0/0R1(config-if)#ip address 10.22.128.131 255.255.255.252
R1(config-if)#no shutdown
R2(config)#interface s0/0R2(config-if)#ip add 10.22.128.134 255.255.255.252
R2(config-if)#no shutdown
R1(config)#interface s0/1
R1(config-if)#ip address 10.22.128.130 255.255.255.252
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 9/35
R1(config-if)#no shutdown
Question 1:
On which OSI layer do MAC addresses reside?
1
2
3
4
Question 2:
Match the routing protocol to its respective class?
1 - ISIS2 - EIGRP
3 - OSPF
4 - RIP
X - Distance Vector
Y - Link State
1-X, 2-Y, 3-Y, 4-X
1-Y, 2-X, 3-Y, 4-X
1-Y, 2-X, 3-Y, 4-Y
1-X, 2-Y, 3-X, 4-X
8/4/2019 Sample Ccna Questions
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Question 3:
Which ACL will block access to Telnet?
access-list 10 deny ip any any eq 23
access-list 100 deny tcp any any eq 22
access-list 10 deny telnet
access-list 100 deny tcp any any eq 23
Question 4:
What is the default encapsulation type on a serial port?
HDLC
PPP
WAN
Frame Relay
Question 5:
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 11/35
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 12/35
10.12.8.255
10.15.255.255
Question 8:
Which one of these IP addresses is a broadcast address?
10.255.0.0/8
192.168.15.67/24
10.65.87.70/29
172.17.31.255/20
Question 9:
Which two of these MAC addresses is a broadcast/multicast address?
ffff.ffff.ffff
0022.0ca4.3562
6c42.15fa.f32d
0100.5e0f.0001
faff.fc00.00aa
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 13/35
Question 10:
What type of technology is Port Address Translation?
1 to 1
static
many to 1
point to point
Question 11:
Which two of these MAC addresses is a unicast address?
6c42.15fa.f32d
0022.0ca4.3562
0100.5e0f.0001
ffff.ffff.ffff
0007.b400.010a
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 14/35
Question 12:
Which of these IP addresses is a private IP adddress according to RFC1918?
172.32.189.56
192.16.85.1
172.1.99.103
10.172.16.192
Question 13:
Which of these IP addresses is a public IP address according to RFC1918?
172.31.54.98
10.10.53.80
192.169.91.5
10.23.42.19
Question 14:
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 15/35
Sales has lost connectivity to Accounting. Which commands need to be entered to allow
Sales to communicate with Accounting?
Code:
R3#show ip protocols
Routing Protocol is "rip"Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 13 secondsInvalid after 180 seconds, hold down 180, flushed after 240
Redistributing: rip
Default version control: send version 2, receive version 2Interface Send Recv Triggered RIP Key-chain
FastEthernet0/0 2 2
Serial0/0 2 2
Automatic network summarization is not in effectMaximum path: 4
Routing for Networks:
192.16.11.0
222.16.2.0Routing Information Sources:
Gateway Distance Last Update222.16.2.9 120 00:00:22
Distance: (default is 120)
R3(config)#interface fa0/0R3(config-if)#no shutdown
8/4/2019 Sample Ccna Questions
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R3(config-if)#interface s0/0
R3(config-if)#clock rate 64000
R3(config-if)#no shutdown
R3(config-router)#no network 192.16.11.0
R3(config-router)#network 192.168.11.0
R3(config-if)#router rip
R3(config-router)#version 2
R3(config-router)#no autoR3(config-router)#no auto-summary
R2(config)#interface fa0/0
R2(config-if)#no shutdownR2(config-if)#interface s0/0
R2(config-if)#clock rate 64000
R2(config-if)#no shutdown
Question 15:
Which 2 static routes must be entered on R1 to allow Accounting and Sales to reach each
other?
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 17/35
Code:
R2#show ip routeGateway of last resort is 0.0.0.0 to network 0.0.0.0
222.16.2.0/30 is subnetted, 1 subnets
C 222.16.2.4 is directly connected, Serial0/0192.168.11.0/25 is subnetted, 1 subnets
C 192.168.11.128 is directly connected, FastEthernet0/1
S* 0.0.0.0/0 is directly connected, Serial0/0Code:
R3#show ip route
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
222.16.2.0/30 is subnetted, 1 subnets
C 222.16.2.8 is directly connected, Serial0/0
192.168.11.0/25 is subnetted, 1 subnetsC 192.168.11.0 is directly connected, FastEthernet0/0
S* 0.0.0.0/0 is directly connected, Serial0/0
R1(config)#ip route 0.0.0.0 0.0.0.0 Serial0/0
R1(config)#ip route 0.0.0.0 0.0.0.0 Serial0/1
R1(config)#ip route 222.16.2.10 255.255.255.252 s0/1
R1(config)#ip route 222.16.2.5 255.255.255.252 s0/0
R1(config)#ip route 222.16.2.10 255.255.255.252 s0/1
R1(config)#ip route 222.16.2.5 255.255.255.252 s0/0
8/4/2019 Sample Ccna Questions
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R1(config)#ip route 192.168.11.128 255.255.255.128 s0/0
R1(config)#ip route 192.168.11.0 255.255.255.128 s0/1
R1(config)#ip route 192.168.11.128 0.0.0.128 s0/1
R1(config)#ip route 192.168.11.0 0.0.0.0 128 s0/0
Question 1:
Which is the correct statement for configuring PAT?
ip nat inside source list NAT interface fa0/1
ip nat inside source static tcp 1.1.1.1 22 interface fa0/1 22ip nat inside source static 1.1.1.1 2.2.2.2
ip nat inside source list NAT interface fa0/1 overload
Question 2:
Two routers are having issues bringing up an EIGRP neighbor relationship. Examine the
exhibit to determine the cause.
Code:
R1
interface s0/1description To R2
encapsulation ppp
ip address 192.168.25.66 255.255.255.252no shutdown
!
router eigrp 10
network 192.168.25.64 0.0.0.3Code:
8/4/2019 Sample Ccna Questions
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R2
interface s0/1
description To R1encapsulation ppp
ip address 192.168.25.65 255.255.255.252
no shutdown!
router eigrp 20
network 192.168.25.64 0.0.0.3
auto-summary is enabled
The AS numbers do not match
The routers' serial interfaces are in different subnets
EIGRP does not support PPP encapsulation
Question 3:
Which layer of the OSI model uses port numbers to differentiate between sessions?
Transport
Network
Data Link
Physical
Question 4:
8/4/2019 Sample Ccna Questions
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What is the term used to describe what happens to information as it travels down through
the OSI layers?
Sheath
Encapsulate
Enclose
Cover
Question 5:
Which protocol resolves hostnames to IP addresses?
DNS
DHCP
SSH
FTP
BOOTP
Question 6:
Which protocol automatically provides IP addressing and other options to workstationsfrom a centralized server?
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 21/35
FTP
DNS
DHCP
TelnetHTTP
Question 7:
Which two of these choices are types of entries in a routing table?
Constant
Push
Dynamic
Stalled
Static
Pull
Question 8:
Which protocol is the prefered secure choice for remotely accessing the command line of
a Cisco network device?
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 22/35
Telnet
HTTP
TFTP
SSHFTP
Question 9:
What is the name of the mode that is accessed with the "enable" command?
Privileged Exec
Global Configuration
User Exec
Line Configuration
Question 10:
What protocol is used by a workstation to retrieve an unknown Layer 2 address if theworkstation already has the Layer 3 address?
UDP
TCP
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 23/35
IP
ICMP
ARP
Question 11:
What global configuration command is used to weakly encrypt plain-text passwords insome IOS commands?
service encrypt-password
service password-encryption
service password-recovery
encrypt-password service
Question 12:
What command can be used to test if a device is up by sending ICMP echo-requests and
receiving back ICMP echo-replies?
CDP
FTP
Telnet
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 24/35
PING
Question 13:
When no other explicit route to a network exists in a route table which of the choices
below becomes the gateway of last resort?
Automatic route
Alternative route
Final route
Obligated route
Default route
Question 14:
What type of network it this?
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 25/35
Non-broadcast multiaccess
Broadcast Multiaccess
Point-to-Point
LAN
Point-to_Multipoint
Question 15:
If all routers were running OSPF and were powered on at the same time. Which would be
the DR, BDR and DROther?
8/4/2019 Sample Ccna Questions
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R1 DR R2 BDR
R3 DROther
R1 BDR
R2 DR
R3 DROther
R1 DROther
R2 BDR
R3 DR
R1 DROther
R2 DR R3 BDR
Question 1:
8/4/2019 Sample Ccna Questions
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Which command will prevent OSPF from sending updates out only serial0/0?
R1# passive-interface s0/0
R1(config)# passive-interface s0/0R1(config-router)# passive-interface s0/0
R1(config-if)# passive-interface s0/0
Question 2:
Which multicast address does EIGRP use to send route updates?
224.0.0.10
244.0.0.10
224.0.0.5
224.0.0.6
225.0.0.6
255.255.255.255
Question 3:
Which multicast address does OSPF use to send updates to DR and BDRs in a multi-access segment?
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 28/35
224.0.0.10
244.0.0.10
224.0.0.5
224.0.0.6
225.0.0.6
255.255.255.255
Question 4:
Which OSPF multicast destination address do domain routers use to send route updates to
DROther routers in a multi-access segment?
224.0.0.10
244.0.0.10
224.0.0.5
224.0.0.6
225.0.0.6
255.255.255.255
Question 5:
8/4/2019 Sample Ccna Questions
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Which of the following conditions must be agreed upon for OSPF routers to become
neighbors? (choose 3)
area ID
authentication
router IDs
multicast addressing
DR and BDR
hello and dead intervals
Question 6:
Which of the following conditions must be agreed upon for EIGRP routers to become
neighbors? (choose 3)
common subnet
AS numbers
hello and dead intervals
router IDs
K values
link bandwidth percent
Question 7:
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 30/35
Which of the following are valid OSPF adjacency states? (choose 3)
init
startexchange
full
done
passive
active
Question 8:
Where can you add summary routes on OSPF routers? (choose 2)
Autonomous System Boundary Routers (ASBRs)
Area Border Routers (ABRs)
area 0 routers
Designated Routers (DRs)
Backup Designated Routers (BDRs)
any OSPF router
Question 9:
8/4/2019 Sample Ccna Questions
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Where can you add summary routes on EIGRP routers?
only on Autonomous System Boundary Routers (ASBRs)
only on Area Border Routers (ABRs)only on area 0 routers
only on Designated Routers (DRs)
only on Backup Designated Routers (BDRs)
any EIGRP router
Question 10:
Which OSPF statement could be used for enabling OSPF on interfaces with IPs within
only the 222.12.12.1/26 network?
network 222.12.12.1 255.255.255.192 area 0
network 222.12.0.0 0.0.255.255 area 0
network 222.12.12.0 0.0.0.255 area 0
network 222.12.12.0 0.0.0.63 area 0
network 222.12.12.0 0.0.0.64 area 0
Question 11:
8/4/2019 Sample Ccna Questions
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Select the broadcast address for 192.168.43.19/28.
192.168.43.255
192.168.43.15192.168.43.31
192.168.43.16
192.168.43.32
Question 12:
Select the network ID for 192.168.43.19/28.
192.168.43.255
192.168.43.15
192.168.43.31
192.168.43.16
192.168.43.32
Question 13:
Which VTP mode forwards VTP messages but will not act on or originate them?
8/4/2019 Sample Ccna Questions
http://slidepdf.com/reader/full/sample-ccna-questions 33/35
client
server
transparent
Question 14:
Which of the following commands have been entered on R1? (choose 2)
Code:
R1#show ip ospf interface fa0/0FastEthernet0/0 is up, line protocol is up
Internet Address 172.16.1.1/29, Area 0
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Process ID 1, Router ID 10.10.10.10, Network Type BROADCAST, Cost: 10
Transmit Delay is 1 sec, State DR, Priority 2
Designated Router (ID) 10.10.10.10, Interface address 172.16.1.1Backup Designated router (ID) 3.3.3.3, Interface address 172.16.1.3
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40Hello due in 00:00:03
Supports Link-local Signaling (LLS)
Index 2/2, flood queue length 0 Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 2, Adjacent neighbor count is 2Adjacent with neighbor 2.2.2.2
Adjacent with neighbor 3.3.3.3 (Backup Designated Router)
Suppress hello for 0 neighbor(s)
R1(config-if)# ip ospf hello-interval 10
R1(config-router)# router-id 10.10.10.10
R1(config-if)# ip ospf dead-interval 40
R1(config-if)# ip ospf priority 2
Question 15:
What possible reason could you derive from seeing this output from the debug serial
interface command?
Code:
R2#show ip interface br
Interface IP-Address OK? Method Status Protocol
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FastEthernet0/0 unassigned YES unset administratively down down
Serial0/0 172.16.1.1 YES manual up down
Code:
R2(config-if)#do debug serial interface
*Mar 1 00:02:32.803: Illegal HDLC serial type code 49185, PC=0x604B0DB4*Mar 1 00:01:42.215: Serial0/0: HDLC myseq 1, mineseen 0, yourseen 0, line up
*Mar 1 00:01:52.219: Serial0/0: HDLC myseq 2, mineseen 0, yourseen 0, line down
*Mar 1 00:02:02.215: Serial0/0: HDLC myseq 3, mineseen 0, yourseen 0, line down*Mar 1 00:02:12.215: Serial0/0: HDLC myseq 4, mineseen 0, yourseen 0, line down
*Mar 1 00:02:22.215: Serial0/0: HDLC myseq 5, mineseen 0, yourseen 0, line down
*Mar 1 00:02:32.803: Illegal HDLC serial type code 49185, PC=0x604B0DB4
bad cable
line physically down
faulty hardware
encapsulation mismatch