Introduction to Networks

Question 1

What is a characteristic of a fault tolerant network?

Answer 1

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

Question 2

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 transaction. 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?

Answer 2

Audio conference, financial transactions, web page

Question 3

What is a benefit of using cloud computing in networking?

Answer 3

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

Question 4

What is the function of the shell in an OS?

Answer 4

It interfaces between the users and the kernel

Question 5

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

Answer 5

An SSH connection

Question 6

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?

Answer 6

The command is being entered from the wrong mode of operation

Question 7

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

Answer 7

To interrupt the ping process

Question 8

Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode?

Enter configuration commands, one per line. End with CNTL/Z.
SW1(config)# enable password letmein
SW1(config)# enable secret secretin
SW1(config)# line console 0
SW1(config-line)# password lineconin
SW1(config-line)# login
SW1(config-line)# exit
SW1(config)# line vty 0 15
SW1(config-line)# password linevtyin
SW1(config-line)# login
SW1(config-line)# end
SW1#

Answer 8

lineconin

Question 9

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

Answer 9

VLAN 1

Question 10

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?

Answer 10

TCP

Question 11

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

Answer 11

It encourages competition and promotes choices.

Question 12

What are two benefits of using a layered network model?

Answer 12

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

Question 13

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

Answer 13

Network, transport

Question 14

Which name is assigned to the transport layer PDU?

Answer 14

Segment

Question 15

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 that the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)

Answer 15

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

Question 16

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?

Answer 16

Physical layer

Question 17

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

Answer 17

Straight-through

Question 18

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

Answer 18

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

Question 19

What is a characteristic of UTP cabling?

Answer 19

Cancellation

Question 20

What are two characteristics of fiber-optic cable? (Choose two.)

Answer 20

It is not affected by EMI or RFI, it is more expensive than UTP cable is

Question 21

What is a characteristic of the LLC sublayer?

Answer 21

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

Question 22

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?

Answer 22

Partial mesh

Question 23

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

Answer 23

CSMA/CA

Question 24

What are three primary functions provided by Layer 2 data encapsulation? (Choose three.)

Answer 24

Data link layer addressing, detection of errors through CRC calculations, delimiting group of bits into frames

Question 25

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

Answer 25

It will discard the frame

Question 26

What are two examples of the cut-through switching method? (Choose two.)

Answer 26

Fast-forward switching, fragment free switching

Question 27

What are two actions performed by a Cisco switch? (Choose two.)

Answer 27

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

Question 28

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

Answer 28

Store-and forward switching