CCNA-C
What are the three ranges of IP addresses that are reserved for internal private use?
10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26
Refer to the exhibit. 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?
198.133.219.17, 128.107.12.117, 64.104.78.227
How many hosts are addressable on a network that has a mask of 255.255.255.248?
6
Refer to the exhibit. 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.
Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?
BB:BB:BB:BB:BB:BB
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
Which two protocols operate at the highest layer of the TCP/IP protocol stack?
DNS, POP
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 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 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.
After several configuration changes are made to a router, the copy running-configuration startup-configuration command is issued. Where will the changes be stored?
NVRAM
A technician configures a switch with these commands: SwitchA(config)# interface vlan 1 SwitchA(config-if)# ip address 192.168.1.1 255.255.255.0 SwitchA(config-if)# no shutdown What is the technician configuring?
SVI
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
Refer to the exhibit. From global configuration mode, an administrator is attempting to create a message-of-the-day banner by using the command banner motd V Authorized access only! Violators will be prosecuted! V When users log in using Telnet, the banner does not appear correctly. What is the problem?
The delimiting character appears in the banner message.
Which statement is true about variable-length subnet masking?
The size of each subnet may be different, depending on requirements.
Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct?
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?
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.
What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users?
an SSH connection
Which connection provides a secure CLI session with encryption to a Cisco switch?
an SSH connection
Which two roles can a computer assume in a peer-to-peer network where a file is being shared between two computers?
client, server
Which two tasks are functions of the presentation layer?
compression, encryption
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
Refer to the exhibit. The network administrator for a small advertising company has chosen to use the 192.168.5.96/27 network for internal LAN addressing. As shown in the exhibit, a static IP address is assigned to the company web server. However, the web server cannot access the Internet. The administrator verifies that local workstations with IP addresses that are assigned by a DHCP server can access the Internet, and the web server is able to ping local workstations. Which component is incorrectly configured?
default gateway address
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 are two examples of the cut-through switching method?
fast-forward switching, fragment-free switching
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
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
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
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
What are two services provided by the OSI network layer?
routing packets toward the destination, encapsulating PDUs from the transport layer
What is the process of dividing a data stream into smaller pieces before transmission?
segmentation
What is the TCP mechanism used in congestion avoidance?
sliding window
What information is added during encapsulation at OSI Layer 3?
source and destination IP address
Which type of UTP cable is used to connect a PC to a switch port?
straight-through
When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?
subnet mask
What source IP address does a router use by default when the traceroute command is issued?
the IP address of the outbound interface
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
In computer communication, what is the purpose of message encoding?
to convert information to the appropriate form for transmission
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
What is the purpose of having a converged network?
to reduce the cost of deploying and maintaining the communication infrastructure
What is the function of the HTTP GET message?
to request an HTML page from a web server
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
In what two situations would UDP be the preferred transport protocol over TCP?
when a faster delivery mechanism is needed, when applications do not need to guarantee delivery of the data
