CCNA Practice Test | Routing and Switching exam

Which field in an IPv4 header identifies the life span of an IP packet and is decremented by one (1) each time a router forwards the packet?

A. Destination Address

B. Service Type

C. IHL

D. Version

E. TTL

F. Source Address

What is the destination address of a router solicitation packet?

A. FF02::2

B. FF02::A

C. FF02::9

D. FF02::6

E. FF02::1

F. FF02::5

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?

A. 8

B. 6

C. 30

D. 32

E. 14

F. 16

Which of the following protocols is used in redundant layer 2 networks to eliminate the effects of a loop?

A. STP

B. CDP

C. VTP

D. DTP

When the Cisco IOS image is located during boot, where is it loaded?

A. ROM

B. RAM

C. TFTP

D. NVRAM

E. FLASH

Which component is used to hold the critical electronic components of a router?

A. Motherboard

B. Memory

C. Interface

D. PSU

E. CPU

Which commands are used to enable a router interface and configure it with the IPv4 address 10.1.1.1/26? (Choose two)

A. no shutdown

B. ip 10.1.1.1 255.255.255.192

C. address 10.1.1.1 255.252.255.192

D. shutdown

E. enable

F. ip address 10.1.1.1 255.255.255.192

Refer to the exhibit. The output that is shown is generated at a switch. Which three statements are true? (Choose three)

Refer to the exhibit. The output that is shown is generated at a switch. Which three statements are true?

A. All ports will be in a state of discarding, learning, or forwarding.

B. Thirty VLANs have been configured on this switch.

C. The bridge priority is lower than the default value for spanning tree.

D. All interfaces that are shown are on shared media.

E. All designated ports are in a forwarding state.

F. This switch must be the root bridge for all VLANs on this switch.

Which options are available for obtaining a license file? (Choose two)

A. Cisco Registration Manager

B. Cisco License Manager

C. Cisco Portal

D. Cisco PAK

E. Cisco License Registration Portal

F. Cisco Manager

Which statements are true about telnet and ssh? (Choose two)

A. Only data traffic is encrypted with ssh

B. All telnet traffic is sent in plain text

C. All ssh traffic is encrypted

D. The data is hashed by telnet during transmission

E. The username and password is hashed by telnet during authentication

F. Only authentication traffic is encrypted with ssh

When configuring an EtherChannel bundle, which mode enables LACP only if a LACP device is detected?

A. Passive

B. Desirable

C. On

D. Auto

E. Active

What guidelines must be followed to successfully form an EtherChannel bundle? (Choose two)

A. The same duplex setting must be used

B. A mixture of access ports and trunk ports can be used

C. Every link that's going to bundled together must be using the exact same speed

D. The native VLAN can differ for every port that is being placed into that bundle

A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?

A. This is a 10 Mb/s switch port.

B. This is a 100 Mb/s switch port.

C. This is an Ethernet port operating at half duplex.

D. This is an Ethernet port operating at full duplex.

E. This is a port on a network interface card in a PC.

Which two benefits are provided by creating VLANs? (Choose two)

A. added security

B. dedicated bandwidth

C. provides segmentation

D. allows switches to route traffic between subinterfaces

E. contains collisions

You have configured one side of your EtherChannel as passive.
What mode should you use on the other side?

A. Desirable

B. On

C. Auto

D. Active

Which commands will you use to verify the IPv6 EIGRP interfaces that are participating in the routing process? (Choose two)

A. show ipv6 eigrp interfaces

B. show ipv6 protocols

C. show ipv6

D. show ipv6 routing protocol

Which command in line vty configuration mode is needed while configuring SSH to inform the Cisco IOS router that authentication needs to be performed using usernames and passwords stored locally on the router?

A. login authentication local

B. login

C. privilege

D. username password

E. exec-timeout

F. login local

Which of the following command can be used to verify EIGRP configuration including showing the routing protocol and metric weight?

A. show interface brief

B. show ip protocols

C. show run | i network 10

D. router eigrp 100

What is known as "one-to-nearest" addressing in IPv6?

A. global unicast

B. anycast

C. multicast

D. unspecified address

You have a Class A network with a /27 subnet mask.
How many hosts can be addressed in that network?

A. 62

B. 6

C. 2

D. 30

E. 14

F. 126

Which two of these are characteristics of the 802.1Q protocol? (Choose two)

A. It is used exclusively for tagging VLAN frames and does not address network reconvergence following switched network topology changes.

B. It modifies the 802.3 frame header, and thus requires that the FCS be recomputed.

C. It is a Layer 2 messaging protocol which maintains VLAN configurations across networks.

D. It includes an 8-bit field which specifies the priority of a frame.

E. It is a trunking protocol capable of carrying untagged frames.

Which device is responsible for translating the private IPv4 address to a public IPv4 address when using static NAT?

A. Cloud

B. Switch

C. Router

D. NAT server

E. Source PC

F. Destination PC

Which switch would STP choose to become the root bridge in the selection process?

A. 32768: 11-22-33-44-55-66

B. 32768: 22-33-44-55-66-77

C. 32769: 11-22-33-44-55-65

D. 32769: 22-33-44-55-66-78

How does creating an access list differ in IPv6 from IPv4? (Choose two)

A. Prefix length can be used

B. It is automatically applied to an interface

C. Operator ports can be used

D. Wildcard masks are not used

You are implementing a VLSM network. You are using the Class B network of 172.16.0.0/16 and need to create 256 networks from this. The fifth network will then be subnetted into /30 networks.
What is the subnet ID of the fourth /30 network?

A. 172.16.4.12/30

B. 172.16.4.4/30

C. 172.16.4.6/30

D. 172.16.4.8/30

E. 172.16.4.14/30

F. 172.16.4.10/30

Which of the following commands best allows you to verify the link status of a MLP link?

A. show ppp multilink

B. show ppp

C. show ip multilink

D. show run-config

What happens in a CHAP authentication on a serial link?

A. There is a challenge

B. Two way encryption

C. DLSAM

D. VPN Tunnel

Which command is used to generate local RSA keys that will be used for SSH connections to a Cisco IOS device?

A. crypto generate rsa key

B. crypto generate key rsa

C. crypto key generate rsa

D. crypto rsa generate key

Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network? (Choose two)

A. 802.1d

B. VTP

C. 802.1q

D. STP

E. SAP

Which of the following describes the roles of devices in a WAN network? (Choose three)

A. A CSU/DSU terminates a digital local loop.

B. A modem terminates a digital local loop.

C. A CSU/DSU terminates an analog local loop.

D. A modem terminates an analog local loop.

E. A router is commonly considered a DTE device.

F. A router is commonly considered a DCE device.

What are the characteristics of the client VTP mode? (Choose two)

A. Allows creating, modifying, or deleting VLANs

B. Does not allow creating, modifying, or deleting VLANs

C. Synchronizes VLAN configuration

D. Allows creating, modifying, and deleting local VLANs only

What is the best definition of a WAN?

A. Remote access to resources across a high speed link

B. Local access to resources

C. Local Internet access

D. Core network resources

Which command can be used to verify that the current IPv6 path matches the desired route to the server?

A. show ipv6 cef

B. show ipv6 mroute

C. show ipv6 neighbors

D. show ipv6 route

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?

A. the switch with the highest MAC address

B. the switch with the lowest MAC address

C. the switch with the highest IP address

D. the switch with the lowest IP address

You are working in a data center environment and are assigned the address range 10.188.31.0/23. You are asked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hosts each. Which IP address range meets these requirements?

A. 10.188.31.0/26

B. 10.188.31.0/25

C. 10.188.31.0/28

D. 10.188.31.0/27

E. 10.188.31.0/29

Which physical layer media are used today for connecting network devices (switches and routers) together in a LAN? (Choose two)

A. Coaxial

B. Twisted copper pair

C. Fiber optic

D. Wireless

What does PAT use to keep each translation unique?

A. A protocol number

B. A combination of a port number and protocol number

C. An IP address

D. A port number

E. A combination of an IP address and a port number

F. A combination of an IP address and a protocol number

Which command can be used from a PC to verify the connectivity between hosts that connect through a switch in the same LAN?

A. ping address

B. tracert address

C. traceroute address

D. arp address

What are the benefits of implementing IPv6? (Choose four)

A. Transition richness

B. Larger address space

C. Simpler header

D. Security and mobility

E. Smaller address space

F. Complex header

You want to disable the negotiation of trunking for all FastEthernet ports.
Which commands are required to do this? (Choose two)

A. interface range FastEthernet 0/1-24

B. show vlan brief

C. switchport access vlan 2

D. switchport mode access

A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?

A. More collision domains will be created.

B. IP address utilization will be more efficient.

C. More bandwidth will be required than was needed previously.

D. An additional broadcast domain will be created.

What are the possible consequences of an STP failure? (Choose two)

A. Only the users that are directly connected to the switch will be affected

B. Every port will transition to a blocking state

C. The load on all links in the switched LAN quickly starts increasing

D. Due to very high load for the CPU, the switch becomes unreachable

Which of the following outputs can the "show ip eigrp neigbors" command provide? (Choose four)

A. The number of EIGRP packets that the software is waiting to send

B. The address of the neighboring device

C. The order you have learned neighborships in

D. The length of time EIGRP will wait to hear from the peer before declaring it down

E. The internal and external distances

F. The maximum path, hop count, and metric variance

You need to create an ACL entry that will only permit all addresses in the 10.1.1.16/28 network.
Which address and wildcard mask combination will accomplish this for us?

A. 10.1.1.16 0.0.0.31

B. 10.1.1.16 0.0.0.63

C. 10.1.1.16 0.0.0.255

D. 10.1.1.16 0.0.0.15

E. 10.1.1.16 0.0.0.3

F. 10.1.1.16 0.0.0.7

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?

A. The access link needs to be configured in multiple VLANs.

B. The link between the switches is configured in the wrong VLAN.

C. The link between the switches needs to be configured as a trunk.

D. VTP is not configured to carry VLAN information between the switches.

E. Switch IP addresses must be configured in order for traffic to be forwarded between the switches.

You are looking at the MAC address 00:00:0c:43:2e:08.
Which hexadecimal values in the MAC address represent the vendor-assigned portion of the MAC address?

A. 43:2e:08

B. 00:00:0c:43:2e:08

C. 2e:08

D. c:43:2e:08

E. 00:0c:43:2e:08

F. 0c:43:2e:08

Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two)

A. reduces routing table entries

B. auto-negotiation of media rates

C. efficient utilization of MAC addresses

D. dedicated communications between devices

E. ease of management and troubleshooting

What are the two main functions of a router? (Choose two)

A. Determine the optimal path to forward packets and store the decision in a routing table

B. Determine the optimal path to forward frames and store the decision in a MAC address table

C. Forward frames based on entries in a MAC address table

D. Forward packets based on entries in a routing table

In a network that uses EIGRP, you need to configure a default route to 203.0.113.1 on one router that will then be advertised to the other routers.
What command should be used first?

A. ip route 203.0.113.1 0.0.0.0 203.0.113.1

B. ip route 0.0.0.0 0.0.0.0 203.0.113.1

C. default ip route 0.0.0.0 0.0.0.0 203.0.113.1

D. ip route 203.0.113.1 0.0.0.0 0.0.0.0

The configuration register on your Cisco IOS 2900 series router is set to 0x2101. How will the router choose the IOS image during the boot process?

A. The last image located in flash will be booted

B. The first image located in flash will be booted

C. The image listed in the boot system command will be booted

D. The image located on a TFTP server will be booted

Which IPv6 prefix will the typical enterprise network receive from the service provider?

A. /52

B. /56

C. /64

D. /32

E. /48

F. /60

Refer to the exhibit. Switch port FastEthernet 0/24 on ALSwitch1 will be used to create an IEEE 802.1Q-compliant trunk to another switch. Based on the output shown, what is the reason the trunk does not form, even though the proper cabling has been attached?

A. VLANs have not been created yet.

B. An IP address must be configured for the port.

C. The port is currently configured for access mode.

D. The correct encapsulation type has not been configured.

E. The "no shutdown" command has not been entered for the port.

Where is the start-up configuration file stored and loaded from by default on a Cisco IOS router?

A. FLASH

B. NVRAM

C. RAM

D. TFTP

E. ROM

Which statement about VLAN operation on Cisco Catalyst switches is true?

A. When a packet is received from an 802.1Q trunk, the VLAN ID can be determined from the source MAC address and the MAC address table.

B. Unknown unicast frames are retransmitted only to the ports that belong to the same VLAN.

C. Broadcast and multicast frames are retransmitted to ports that are configured on different VLAN.

D. Ports between switches should be configured in access mode so that VLANs can span across the ports.

Which statements provide reasons as to why you would implement a DHCP server in your Enterprise environment? (Choose two)

A. It will automatically assign MAC addresses to clients in accordance to VLAN settings

B. It is a favourable solution when mobile clients exist in the network

C. It provides host-based security including anti-virus and anti-malware

D. It will discover the MAC address to IPv4 address mappings for clients

E. It will automatically assign IPv4 addresses to clients in accordance to VLAN settings

Cisco test CCNA 200-125

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