Practice exam

What three blocks of addresses are defined by RFC 1918 for private network use? (Choose three.)

1. 10.0.0.0/8 2. 192.168.0.0/16 3. 172.16.0.0/12

What are two features of ARP? (Choose two.)

1. If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply. 2.If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.

Which two statements correctly describe a router memory type and its contents? (Choose two.)

1. RAM is volatile and stores the IP routing table. 2. ROM is nonvolatile and contains basic diagnostic software

What three services are provided by the transport layer? (Choose three.)

1. connection establishment 2. flow control 3. error recovery

34 Two routers that are labeled A and B connect via a serial link, and each router has a switch that is attached through an Ethernet link. Beside the router A LAN are the words 172.16.16.0 /22. Refer to the exhibit. An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22?

172.16.19.255

Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52?

2001:db8:0:f000::/52

Match the functions with the corresponding OSI layer. (Not all options are used.)

Application layer: HTTP and FTP end user program functionality Presentation Layer: compression common format Session Layer: dialog maintenance

For Cisco IOS, which escape sequence allows terminating a traceroute operation?

Ctrl+Shift+6

Which keys act as a hot key combination that is used to interrupt an IOS process?

Ctrl-Shift-6

A small business 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

What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?

It forwards the frame out of all ports except for the port at which the frame was received.

What is done to an IP packet before it is transmitted over the physical medium?

It is encapsulated in a Layer 2 frame.

What are the two sublayers of the OSI model data link layer? (Choose two.)

MAC and LLC

A user reports a lack of network connectivity. The technician takes control of the user machine and attempts to ping other computers on the network and these pings fail. The technician pings the default gateway and that also fails. What can be determined for sure by the results of these tests?

Nothing can be determined for sure at this point.

A network administrator enters the service password-encryption command into the configuration mode of a router. What does this command accomplish?

This command prevents someone from viewing the running configuration passwords.

An IPv6 enabled device sends a data packet with the destination address of FF02::2. What is the target of this packet?​

all IPv6 configured routers on the local link​

What is a basic characteristic of the IP protocol?

connectionless

If data is being sent over a wireless network, then connects to an Ethernet network, and eventually connects to a DSL connection, which header will be replaced each time the data travels through a network infrastructure device?

data link

What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?

destination MAC address

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

extranet

5 A graphic shows the partial configuration of a switch. The commands displayed are as follows: SW1# configure terminal 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# Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses Telnet to connect to the switch, which password is needed to access user EXEC mode?

linevtyin

A technician has been asked to develop a physical topology for a network that provides a high level of redundancy. Which physical topology requires that every node is attached to every other node on the network?

mesh

In an Ethernet network, when a device receives a frame of 1200 bytes, what will it do?

process the frame as it is

Which two OSI model layers are considered to be included in the top layer of the TCP/IP protocol stack? (Choose two.)

session and presentation

What is the purpose of ICMP messages?

to provide feedback of IP packet transmissions