CCNA Practice Exam 1 - MCQs

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What is the name of the concept by which ports are virtually merged or combined together to work as one?

Looping

Load Channel

Etherchannel

High Balancing

How does VLSM make IP addressing more efficient?

By increasing the total number of IP addresses.

By decreasing the total number of IP addresses.

By creating subnets

By allowing a routed system to include subnets of different mask lengths to suit requirements 05_978

Which of the following are key attributes of PPP ?

can be used over analog circuits

maps Layer 2 to Layer 3 address

supports IP only

encapsulates several routed protocols

Your boss, Ronald, does not seem to be able to grasp subnetting. He comes out of a management meeting and quietly asks you to help him with a subnetting issue. He needs to divide the Class B address space the company uses into six subnets for the various buildings in the plant, while keeping the subnets as large as possible to allow for future growth. What is the best subnet mask to use in this scenario?

255.255.248.0

255.255.240.0

255.255.0.0

255.255.224.0

Multiple Inside IPs NATted to Single global IP is called ?

NAT Overload

Static NAT

Outside NAT

Inside NAT

Why is summarization so important to an efficient routed system?

It adds detail to the route tables of routers.

Summarization sends all subnets as classful networks, eliminating the overhead of transmitting the mask in routing updates.

Summarization reduces the size of route tables, prevents route table instability due to flapping routes, and reduces the size of routing updates.

Summarization enforces router authentication, preventing spurious updates from excessively loading the route.

Which is a valid alternate expression of FE80:0000:0000:0000:0202:B3FF:0 E1E:8329? Choose all that apply.

FE80::0202:B3FF:0E1E:8329

FE80::0202:B3FF::E1E:8329

FE80::202:B3FF:E1E:8329

FE80::0202:B8FF:0E1E:8329

What routing protocol supports unequal cost load-balancing?

EIGRP

STP

OSPF

RIPv2

To which class 255.21.24.10 IP belongs to?

Class E

Class B

Invalid IP

Class C

In a Cisco switch, if a revision number is 10 and you deleted 3 VLAN one by one, what will be the final revision number?

In which protocol you can make policies to route traffic?

RIP v2

OSPF

SIP

POP3

Which command is used to allow everyone in the network in EIGRP?

Network 255.255.255.240

Network allow all

Network from all

Network 0.0.0.0 0.0.0.0

You have purchased several brand-new Cisco routers for your company. Your current address space is 172.16.0.0 /22. Because these new routers support the ip subnet zero command, you realize you are about to gain back two subnets that you could not use with the old gear. How many subnets total will be available to you once the upgrades are complete?

At which layer connection is first established?

Layer 3

Layer 5

Layer 1

Layer 4

Which of the following is an addressing type that is assigned to network interfaces for communications on the physical network segment?

Router ID

Bridge ID

MAC address

IP address

Which of the following are alternate representations of the decimal number 227? Choose two.

0xE3

0x227

0x143

11100110

Which command is used to erase everything on Cisco’s router 2600?

Erase things

Delete data

Write erase

Erase data

Which command is used to see routes in routing table?

Show routes

Display ip route

Show ip route

Show ip packets

Given the mask 255.255.254.0, how many hosts per subnet does this create?

254

256

512

510

Which of the following are valid types of IPv6 address? Choose all that apply.

Global unicast

Multicast

Broadcast

Directed broadcast

What are the advantages of route summarization? Choose two.

Reduces CPU and memory load on routers

Ensures job security for network admins because of difficulty of configuration

Reduces routing update traffic overhead

Reduces the impact of discontiguous subnets

Identifies flapping interfaces

Which is the correct command to redistribute static routes?

C(config-router)#redistribute static route

C(config-router)#redistribute static subnets

C(config-router)#redistribute static routes 0.0.0.0 0.0.0.0

C(config-router)#redistribute static routes

Which protocol BGP use to establish connection with neighbor?

SMTP

TCP

NTP

UDP

Ho to use Router working in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates ?

Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface

Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic

Configure many sub-interfaces on the same subnet

Configure a single sub-interface to establish multiple PVCconnections to multiple remote router interfaces

What should be done before configuring etherchannel?

Assign IP address

No shutdown

Shutdown

Port security

In a network of two Cisco switches, one is having priority of 32665 and second having 0, which one will be the root bridge?

First

Second

Both

No root bridge in the scenario

What is the binary value of decimal 256?

11111111

1111111111

100000000

10000000

Julie’s IP address is 192.168.1.21 255.255.255.240. Joost’s IP is 192.168.1.14/28. Their computers are connected together using a crossover Ethernet cable. Why can’t they ping each other?

The subnet masks are different .

They can. This is another trick question.

Because they are in different subnets.

Because the router does not support subnetting.

Why is VLSM important to modern IP networks?

Because networks that use the same mask cannot route.

Because every subnet must use a different mask to avoid conflicts.

Because it allows us to uniquely identify each subnet by its mask number.

Because it allows each subnet in a routed system to be correctly sized for the requirement.

Which of the following are valid transition strategies when moving from IPv4 to IPv6? Choose all that apply.

NAT-PT

SNARD encapsulation