Cisco Final pt. 2 (41 questions - one third)

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

192.168.1.64/26

Consider the IP address of 192.168.10.0/24 that has been assigned to a high school building. The largest network in this building has 100 devices. If 192.168.10.0 is the network number for the largest network, what would be the network number for the next largest network, which has 40 devices?

192.168.10.128

Which three addresses are valid public addresses? (Choose three.)

198.133.219.17 128.107.12.117 64.104.78.227

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 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

Which domain name would be an example of a top-level domain?

.com

An administrator is testing connectivity to a remote device with the IP address 10.1.1.1. What does the output of this command indicate?

A router along the path did not have a route to the destination

Which scenario describes a function provided by the transport layer?

A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window

A wireless host needs to request an IP address. What protocol would be used to process the request?

DHCP

A user is unable to reach the web site when typing http://www.cisco.com in a web browser, but can reach the same site by typing http://72.163.4.161. What is the issue?

DNS

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 function does pressing the Tab key have when entering a command in IOS?

It completes the remainder of a partially typed word in a command

A PC obtains its IP address from a DHCP server. If the PC is taken off the network for repair, what happens to the IP address configuration?

The address is returned to the pool for reuse when the lease expires

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

Which statement is true about variable-length subnet masking?

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

On the basis of the output, which two statements about network connectivity are correct? (Choose two.)

There is connectivity between this device and the device at 192.168.100.1 There are 4 hops between this device and the device at 192.168.100.1

Which three statements characterize UDP? (Choose three.)

UDP provides basic connectionless transport layer functions UDP relies on application layer protocols for error detection UDP is a low overhead protocol that does not provide sequencing or flow control mechanisms

A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?

WAN

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

by providing mechanisms to manage congested network traffic

Which two tasks are functions of the presentation layer? (Choose two.)

compression encryption

Where are Cisco IOS debug output messages sent by default?

console line

What important information is added to the TCP/IP transport layer header to ensure communication and connectivity with a remote network device?

destination and source port numbers

What type of IPv6 address is FE80::1?

link-local

When applied to a router, which command would help mitigate brute-force password attacks against the router?

login block-for 60 attempts 5 within 60

Which example of malicious code would be classified as a Trojan horse?

malware that was written to look like a video game

A technician can ping the IP address of the web server of a remote company but cannot successfully ping the URL address of the same web server. Which software utility can the technician use to diagnose the problem?

nslookup

When planning for network growth, where in the network should packet captures take place to assess network traffic?

on as many different network segments as possible

What are two characteristics shared by TCP and UDP? (Choose two.)

port numbering use of checksum

What is a key characteristic of the peer-to-peer networking model?

resource sharing without a dedicated server

A network administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode?

secretin

A network technician suspects that a particular network connection between two Cisco switches is having a duplex mismatch. Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port?

show interfaces

What is the TCP mechanism used in congestion avoidance?

sliding window

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

What are two ways that TCP uses the sequence numbers in a segment? (Choose two.)

to identify missing segments at the destination to reassemble the segments at the remote location

In what two situations would UDP be the preferred transport protocol over TCP? (Choose two.)

when a faster delivery mechanism is needed when applications do not need to guarantee delivery of the data