Skills USA Internetworking Practice (CCNA 1 Final Exam answers v6.0)

What are three characteristics of multicast transmission?

-A single packet can be sent to a group of hosts. -Multicast transmission can be used by routers to exchange routing information. -Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255

What are two benefits of using a layered network model?

-It assists in protocol design -It prevents technology in one layer from affecting other layers

What are two characteristics of fiber-optic cable?

-It is not affected by EMI or RFI -It is more expensive than UTP cabling is

What are three characteristics of an SVI?

-It is not associated with any physical interface on a switch -It provides a means to remotely manage a switch. -It is associated with VLAN1 by default.

What are the three primary functions provided by Layer 2 data encapsulation?

-data link layer addressing -detection of errors through CRC calculations -delimiting groups of bits into frames

What are two examples of the cut-through switching method?

-fast-forward switching -fragment-free switching

Which two OSI model layers have the same functionality as two layers of the TCP/IP model?

-network -transport

hat are two characteristics shared by TCP and UDP?

-port numbering -use of checksum

Which two commands can be used on a Windows host to display the routing table?

-route print -netstat -r

What are two services provided by the OSI network layer?

-routing packets toward the destination -encapsulating PDUs from the transport layer

A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput?

-the amount of traffic that is currently crossing the network -the type of traffic that is crossing the network -the latency that is created by the number of network devices that the data is crossing

What are two functions of NVRAM?

-to retain contents when power is removed -to store the startup configuration file

What are two actions performed by a Cisco switch?

-using the source MAC addresses of frames to build and maintain a MAC address table -utilizing the MAC address table to forward frames via the destination MAC address

What is the binary representation of 0xCA

11001010

Which subnet would include the address 192.168.1.96 as a usable host address?

192.168.1.64/26

What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001?

2001:0:0:abcd::1

What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.11010011

203.0.113.211

A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?

255.255.255.128

What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?

255.255.255.192

A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices: Subnetwork A: IP phones - 10 addresses Subnetwork B: PCs - 8 addresses Subnetwork C: Printers - 2 addresses What single subnet mask would be appropriate to use for the three subnetworks?

255.255.255.240

How many usable IP addresses are available on the 192.168.1.0/27 network?

30

How many hosts are addressable on a network that has a mask of 255.255.255.248?

6

How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?

62

What method is used to manage contention-based access on a wireless network?

CSMA/CA

A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?

DSL

Which range of link-local addresses can be assigned to an IPv6-enabled interface?

FE80::/10*

What purpose does NAT64 serve in IPv6

It converts IPv6 packets into IPv4 packets

What is an advantage to using a protocol that is defined by an open standard?

It encourages competition and promotes choices

What is the function of the shell in an OS?

It interfaces between the users and the kernel.

What is a characteristic of the LLC sublayer?

It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.

What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?

It will discard the frame.

Fill in the blank. During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a________message

Multicast

What is a benefit of using cloud computing in networking?

Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.

Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?

SLAAC

What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server?

TCP

A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?

The command is being entered from the wrong mode of operation.

After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?

The new configuration will be loaded if the switch is restarted.

During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?

The physical address is added

Which statement is true about variable-length subnet masking

The size of each subnet may be different, depending on requirements.

On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?

VLAN 1

What is a characteristic of a fault tolerant network?

a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure

Which connection provides a secure CLI session with encryption to a Cisco network device?

an SSH connection

Which connection provides a secure CLI session with encryption to a Cisco switch?

an SSH connection

Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?

audio conference, financial transactions, web page

How does quality of service help a network support a wide range of applications and services?

by providing mechanisms to manage congested network traffic

What is a characteristic of UTP cabling?

cancellation

Where are Cisco IOS debug output messages sent by default?

console line

What addresses are mapped by ARP?

destination MAC address to a destination IPv4 address

Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators?

extranet

What layer is responsible for routing messages through an internetwork in the TCP/IP model?

internet

A medium-sized business is researching available options for connecting to the Internet. The company is looking for a high speed option with dedicated, symmetric access. Which connection type should the company choose?

leased line

At a minimum, which address is required on IPv6-enabled interfaces?

link-local

What type of IPv6 address is FE80::1?

link-local

A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?

partial mesh

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

physical layer

Which name is assigned to the transport layer PDU?

segment

What is the process of dividing a data stream into smaller pieces before transmission?

segmentation

What information is added during encapsulation at OSI Layer 3?

source and destination IP address*

Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?

stateful packet inspection

Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?

store-and-forward switching

Which type of UTP cable is used to connect a PC to a switch port?

straight-through

What source IP address does a router use by default when the traceroute command is issued?

the IP address of the outbound interface

A user opens three browsers on the same PC to access www.cisco.com to search for certification course information. The Cisco web server sends a datagram as a reply to the request from one of the web browsers. Which information is used by the TCP/IP protocol stack in the PC to identify which of the three web browsers should receive the reply?

the destination port number

Why are port numbers included in the TCP header of a segment?

to enable a receiving host to forward the data to the appropriate application

Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?

to identify the network address of the destination network

An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?

to interrupt the ping process*

What is the purpose of having a converged network?

to reduce the cost of deploying and maintaining the communication infrastructure

True or False. A dedicated server is not needed when implementing a peer-to-peer network.

true

Which procedure is used to reduce the effect of crosstalk in copper cables?

twisting opposing circuit wire pairs together