(v5.1+v6.0) Introduction to Networks
What is a characteristic of a fault tolerant network Ans: a network that recovers quickly when a
failure occurs and depends on redundancy to limit the impact of a failure
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? Ans: audio conference, financial transactions, web page
What is a benefit of using cloud computing in networking? Ans: Network capabilities are
extended without requiring investment in new infrastructure, personnel, or software.*
What is the function of the shell in an OS? Ans: It interfaces between the users and the kernel.*
Which connection provides a secure CLI session with encryption to a Cisco switch? Ans: an
SSH connection*
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? Ans: The command is being entered from the wrong mode of
operation.*
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? Ans: to interrupt the ping process*
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? Ans: lineconin*
On which switch interface would an administrator configure an IP address so that the switch can
be managed remotely? Ans: VLAN 1*
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? Ans: TCP*
What is an advantage to using a protocol that is defined by an open standard? Ans: It encourages
competition and promotes choices.*
, What are two benefits of using a layered network model? (Choose two.) Ans: It assists in
protocol design. *It prevents technology in one layer from affecting other layers.*
Which two OSI model layers have the same functionality as two layers of the TCP/IP model?
(Choose two.) Ans: network*transport*
Which name is assigned to the transport layer PDU? Ans: segment*
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?
(Choose three.) Ans: 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*
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? Ans: physical layer*
Which type of UTP cable is used to connect a PC to a switch port? Ans: straight-through**
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.) Ans: 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 is a characteristic of UTP cabling? Ans: cancellation*
What are two characteristics of fiber-optic cable? (Choose two.) Ans: It is not affected by EMI
or RFI.* It is more expensive than UTP cabling is.*
What is a characteristic of the LLC sublayer? Ans: It places information in the frame allowing
multiple Layer 3 protocols to use the same network interface and media.*
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? Ans: partial mesh*
What method is used to manage contention-based access on a wireless network? Ans:
CSMA/CA*
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
Ans: data link layer addressing,* placement and removal of frames from the media detection of
errors through CRC calculations, * delimiting groups of bits into frames*