CCNA Dec, 2015 Questions

Thursday, December 10, 2015
E m a d A l - A t o u m C C N A 2 0 0 - 1 2 0 E x a m Q u e s t i o n s P g . 1 | 17
THERE ARE ABOUT 8-10 NEW QUESTIONS!! 2 NEW SUBNETTING!! HOPE THIS WILL HELP YOU IMPROVE YOUR
SCORE!!
Q1. What is the method of mapping ipv4 to ipv6
Answer: NAT 46
Q2. which command you will give in global mode to configure dhcp?
Answer: ip dhcp pool
Q3. What is the first step of NAT ?
Answer: Define in and out interface
Q4: Which of the following are the characteristics of Satellite Internet ?
Answer: 1.Upload speed is only 10% of its download speed
2.Designed for the people who unable to access high speed internet
Q5:Which tech allows a large number of private ip address to be add reps.by a small of public IP
Address??
Answer: NAT
Q6: Which step in the role boot process …..for an IOS image to load into the router ?
Answer: Bootstrap
Q7: What are three broadband wireless technologies?
Answer: 1. Satelite internet
2.Municipal Wi-Fi
3.WiMax
Q8: What is the effect of the overload keyword in a static NAT translation configure?
Answer: Port address translation
Q9: If the primary root bridge experiences a power loss, which switch takes over?
Answer: switch 0040.0Bc0.90c5(lowest Mac)
Q10: Which command can you use to set the hostname on switch ?
Answer: SW(config)# hostname
Q11: What type of switching is being performed when only expect to receive the first 6 bytes of the
frame before transmitting?
Answer: Cut-through

Q12: If a router has 4 interface and each int is connect to 4 switch, how many broadcast?
Answer: C. 4
Q13: Which protocol advirt. a virtual IP address to facil. trans. failover of a cisco routing device?
Answer: B. FHRP
Q14.What two statements about the tunnel mode ipv6IP command are true?
Answer: A. Teredo tunnel
B. ipv4 as the encapsulation protocol
Q15.Command to find Dhcp conflict?
Answer: #show IP dhcp conflict
Q16.Command to start dhcp?
Answer: #service dhcp
Q17.Ipv6 PPP link netmask?
Answer: /127
Q18.Command to verify SSH from router?
Answer: ssh -l [switch IP]
Q19.Why are ospf neighbours stuck in extart/exchange state?
Answer: MTU mismatch
Q20.Which one of these is a valid HSRP virtual MAC address ?
Answer: 0000.0C07.ACxx
Q21.What will happen if a private IP address is assigned to a public interface connected to an ISP?
Answer: A. Addresses in a private range will be not be routed on the Internet backbone.
Q22.What are three values that must be the same within a sequence of packets for Netflow to
consider them a network flow? (Choose three.)
Answer: A. source IP address
D. ingress interface
E. destination IP address
Q23.Which one is the industry standard for First Hop Routing Protocol?
Answer: VRRP
Q24.What will happen if a private IP address is assigned to a public interface connected to an ISP?

Q.25
As a technician, you found the router1 is unable to reach the second router. Both routers are
running IOS version 12.0. Based on this information, what is the most likely cause of the problem?
Answer: incorrect map statement
Q26. Refer to the exhibit. Which WAN protocol is being used?
Answer: C. Frame Relay
Q27. Which command allows you to verify the encapsulation type (CISCO or IETF) for a frame relay
link?
Answer: A. show frame-relay map
Router 1# show running-config
interface serial0/0
bandwidth 64
ip address 172.16.100.2 255.255.0.0
encapsulation frame-relay
frame-relay map ip 172.16.100.1 100 broadcast

Q28. Refer to the exhibit, Host A pings interface S0/0 on router 3, what is the TTL value for that ping?
Answer: A.253
Q29. Refer to the exhibit. The network administrator requires easy configuration options and minimal
routing protocol traffic. Which two options provide adequate routing table information for traffic that
passes between the two routers and satisfy the requests of the network administrator? (choose two)
Answer: C. a static route on InternetRouter to direct traffic that is destined for 172.16.0.0/16 to CentralRouter.
F. a static, default route on CentralRouter that directs traffic to InternetRouter.
Q30. Users on the 172.17.22.0 network cannot reach the server located on the 172.31.5.0 network.
The network administrator connected to router Coffee via the console port, issued the show ip route
command, Based on the output of the show ip route command and the topology shown in the
graphic, what is the cause of the failure?
Answer: C. A static route is configured incorrectly.
Q31. The network administrator needs to address seven LANs. RIP version 1 is the only routing
protocol in use on the network and subnet 0 is not being used. What is the maximum number of
usable IP addresses that can be supported on each LAN if the organization is using one class C
address block?
Answer: E. 30
Q31. Which address and mask combination a summary of the routes learned by EIGRP?

Answer: E. 192.168.25.16 255.255.255.240
Q32. A national retail chain needs to design an IP addressing scheme to support a nationwide
network. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses
per subnet. Working with only one Class B address, which of the following subnet masks will support
an appropriate addressing scheme? (Choose two)
Answer: B. 255.255.255.128
E. 255.255.255.192
Q33. Which subnet mask would be appropriate for a network address range to be subnetted for up
to eight LANs, with each LAN containing 5 to 26 hosts?
Answer: D. 255.255.255.224
Q34. Which statement about access lists that are applied to an interface is true?
Answer: B. you can configure one access list, per direction, per layer 3 protocol
Q35. A network engineer wants to allow a temporary entry for a remote user with a specific
username and password so that the user can access the entire network over the internet. Which ACL
can be used?
Answer: D. dynamic
Q36. What will happen if a private IP address is assigned to a public interface connected to an ISP?
Q37. What are three values that must be the same within a sequence of packets for Netflow to
consider them a network flow? (Choose three.)
Answer: A. source IP address
D. ingress interface
E. destination IP address
Q38. Which three statements about RSTP are true? (Choose three)
Answer: A. RSTP significantly reduces topology reconvening time after a link failure.
B. RSTP expands the STP port roles by adding the alternate and backup roles.

D. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
Q39. Refer to the exhibit. Each of these four switches has been configured with a hostname, as well
as being configured to run RSTP. No other configuration changes have been made. Which three of
these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three)
Answer: A. SwitchA, Fa0/2, designated
B. SwitchA, Fa0/1, root
F. SwitchD, Gi0/2, root
Q40. Three switches are connected to one another via trunk ports. Assuming the default switch
configuration, which switch is elected as the root bridge for the spanning-tree instance of VLAN 1?
Answer: B. the switch with the lowest MAC address

Q41. Refer to the exhibit.
A problem with network connectivity has been observed. It is suspected that the cable connected to
switch port Fa0/9 on Switch1 is disconnected. What would be an effect of this cable being
disconnected?
Answer: D. For less than a minute, Host B would not be able to access the server in VLAN9. Then normal
network function would resume.
Q42. A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel
group 1. On what interface is the IP address configured?
Answer: A. the port-channel 1 interface
Q43. What parameter can be different on ports within an EtherChannel?
Answer: B. DTP negotiation settings
What set of commands was configured on interface Fa0/3 to produce the given output?
Answer: B. interface FastEthernet 0/3 channel-group 2 mode passive switchport trunk encapsulation dot1q
switchport mode trunk

Q45. Refer to the exhibit:
What commands must be configured on the 2950 switch and the router to allow communication
between host 1 and host 2? (Choose two)
Answer: B. Router(config)#interface fastethernet 0/0
Router(config-if)#no shutdown
Router(config)#interface fastethernet 0/0.1
Router(config-subif)#encapsulation dot1q 10
Router(config-subif)#ip address 192.168.10.1 255.255.255.0
Router(config-subif)#interface fastethernet 0/0.2
Router(config-subif)#encapsulation dot1q 20
Router(config-subif)#ip address 192.168.20.1 255.255.255.0
E. Switch1(config) # interface fastEthernet 0/1
Switch1(config-if)# switchport mode trunk
Q46. Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch
over FastEthernet?
Answer: C. 802.1Q

Q47. Refer to the exhibit
All switch ports are assigned to the correct VLANs, but none of the hosts connected to SwitchA can
communicate with hosts in the same VLAN connected to SwitchB. Based on the output shown, what
is the most likely problem?
Answer: C. The link between the switches needs to be configured as a trunk.
Q48. In a switched environment, what does the IEEE 802.1Q standard describe?
Answer: B. a method of VLAN trunking

Q49. Refer to the topology and router output shown in the exhibit:
A technician is troubleshooting host connectivity issues on the switches. The hosts in VLANs 10 and
15 on Sw11 are unable to communicate with hosts in the same VLANs on Sw12. Hosts in the Admin
VLAN are able to communicate. The port-to-VLAN assignments are identical on the two switches.
What could be the problem?
Answer: B. The Link connecting the switches has not been configured as a trunk.
Q50. As a network technician, do you know which are valid modes for a switch port used as a VLAN
trunk? (Choose three)
Answer: A. transparent
B. auto
C. on
Q51. Which two benefits are provided by creating VLANs? (Choose two)
Answer: A. added security
C. provides segmentation
Q52. Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports Fa0/13. An
802.1Q trunk is configured between the two switches. On CAT1, VLAN 10 is chosen as native, but on
CAT2 the native VLAN is not specified. What will happen in this scenario?
Answer: C. A native VLAN mismatch error message will appear.

Q53. What are three benefits of implementing VLANs? (Choose three)
Answer: C. A higher level of network security can be reached by separating sensitive data traffic from other
network traffic.
E. A more efficient use of bandwidth can be achieved allowing many logical networks to use the
same network infrastructure.
F. Broadcast storms can be mitigated by increasing the number of broadcast domains, thus
reducing their size.
Q54. How many broadcast domains are shown in the graphic assuming only the default vlan is
configured on the switches?
Answer: A. One
Q55. The network administrator cannot connect to Switch1 over a Telnet session, although the hosts
attached to Switch1 can ping the interface Fa0/0 of the router. Given the information in the graphic
and assuming that the router and Switch2 are configured properly, which of the following commands
should be issued on Switch1 to correct this problem?
Answer: C. Switch1 (config)# ip default-gateway 192.168.24.1

Q56. The network administrator normally establishes a Telnet session with the switch from host A.
The administrator‘s attempt to establish a connect via Telnet to the switch from host B fails, but pings
from host B to other two hosts are successful. What is the issue for this problem?
Answer: B. The switch needs an appropriate default gateway assigned.

Q57. Refer to the exhibit
Which two statements are true of the interfaces on Switch1? (Choose two)
Answer: C. FastEthernet0/1 is configured as a trunk link.
F. A hub is connected directly to FastEthernet0/5

Q58.
A technician has installed SwitchB and needs to configure it for remote access from the management
workstation connected SwitchA. Which set of commands is required to accomplish this task?
Answer: B. SwitchB(config)#ip default-gateway 192.168.8.254
SwitchB(config)#interface vlan 1
SwitchB(config)#ip address 192.168.8.252 255.255.255.0
SwitchB(config)#no shutdown
Q59. Which two options are valid WAN connectivity methods? (Choose two)
Answer: A. PPP
C. DSL
Q60.Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits
and has built-in security mechanisms?
Answer: B. PPP
Q61.Which command is used to enable CHAP authentication with PAP as the fallback method on a
serial interface?
Answer: C. (config-if)# ppp authentication chap pap
Q62. Which command encrypts all plaintext passwords?

Answer: C. Router(config)# service password-encryption
Q63.What can be done to secure the virtual terminal interfaces on a router? (Choose two)
Answer: D. Configure a virtual terminal password and login process.
E. Enter an access list and apply it to the virtual terminal interfaces using the access-class command.
What is the effect of the configuration that is shown?
Answer: D. It configures a Cisco network device to use the SSH protocol on incoming communications via the
virtual terminal ports.
Q65.Which router IOS commands can be used to troubleshoot LAN connectivity problems? (Choose
three)
Answer: A. ping
D. show ip route
F. show interfaces
Q65. A network administrator needs to allow only one Telnet connection to a router. For anyone
viewing the configuration and issuing the show run command, the password for Telnet access should
be encrypted. Which set of commands will accomplish this task?
Answer: C. service password-encryption
line vty 1
login
password cisco
Q65. At which layer of the OSI model is RSTP used to prevent loops?
Answer: A. data link
Q66. Which layer in the OSI reference model is responsible for determining the availability of the
receiving program and checking to see if enough resources exist for that communication?
Answer: E. application
line vty 0 4
password 7 030752180599
login
transport input ssh

Q67. A receiving host computes the checksum on a frame and determines that the frame is
damaged. The frame is then discarded. At which OSI layer did this happen?
Answer: D. data link
Q68. Refer to exhibit.
A network administrator cannot establish a Telnet session with the indicated router. What is the
cause of this failure?
Answer: C. The vty password is missing.
Q69. At which layer of the OSI model does PPP perform?
Answer: A. Layer 2
Router#show running-config
Building configuration…
Current configuration : 659 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
service password-encryption
!
hostname Router
!
enable secret 5 $1$mERr$hx5rVt7rPNoS4wqbXKX7m0
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
ip access-group 101 in
duplex auto
speed auto
!
access-1ist 101 deny tcp any any eq 22
access-1ist 101 permit ip any any
!
line con 0
password 7 0822455D0A16
login
line vty 0 4
login
line vty 5 14
login
!
end

Q70. Which of the following correctly describe steps in the OSI data encapsulation process? (Choose
two)
Answer: A. The transport layer divides a data stream into segments and may add reliability and flow control
information.
D. Packets are created when the network layer adds Layer 3 addresses and control information to a
segment.
Q71. Before installing a new, upgraded version of the IOS, what should be checked on the router,
and which command should be used to gather this information? (Choose two)
Answer: B. the amount of available flash and RAM memory
D. show version
Q72. Which of the following correctly describe steps in the OSI data encapsulation process? (Choose
two)
Answer: A. The transport layer divides a data stream into segments and may add reliability and flow control
information.
D. Packets are created when the network layer adds Layer 3 addresses and control information to a
segment

CCNA Dec, 2015 Questions

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