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INTRODUCTION TO NETWORKING > final > Flashcards

final Flashcards

1
Q

Which two functions are performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)

A

enables IPv4 and IPv6 to utilize the same physical medium
places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame

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2
Q

Floor(config)# interface gi0/1 Floor(config-if)# description Connects to the Registrar LAN Floor(config-if)# ip address 192.168.235.234 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface gi0/0 Floor(config-if)# description Connects to the Manager LAN Floor(config-if)# ip address 192.168.234.114 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/0 Floor(config-if)# description Connects to the ISP Floor(config-if)# ip address 10.234.235.254 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# interface s0/0/1 Floor(config-if)# description Connects to the Head Office WAN Floor(config-if)# ip address 203.0.113.3 255.255.255.0 Floor(config-if)# no shutdown Floor(config-if)# end

A

192.168.235.234

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3
Q

A router boots and enters setup mode. What is the reason for this?

A

The configuration file is missing from NVRAM.

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4
Q

Two students are working on a network design project. One student is doing the drawing, while the other student is writing the proposal. The drawing is finished and the student wants to share the folder that contains the drawing so that the other student can access the file and copy it to a USB drive. Which networking model is being used?

A

peer-to-peer

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5
Q

Which command is used to manually query a DNS server to resolve a specific host name?

A

nslookup

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6
Q

Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?

A

segment

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7
Q

A client packet is received by a server. The packet has a destination port number of 22. What service is the client requesting?

A

SSH

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8
Q

Refer to the exhibit. What does the value of the window size specify?

A

the amount of data that can be sent before an acknowledgment is required

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9
Q

To which TCP port group does the port 414 belong?

A

well-known

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10
Q

Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?

A

The administrator must first enter privileged EXEC mode before issuing the command.

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11
Q

What is a user trying to determine when issuing a ping 10.1.1.1 command on a PC?

A

if there is connectivity with the destination device

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12
Q

What is a characteristic of a switch virtual interface (SVI)?​

A

An SVI is created in software and requires a configured IP address and a subnet mask in order to provide remote access to the switch.

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13
Q

What happens when a switch receives a frame and the calculated CRC value is different than the value that is in the FCS field?

A

The switch drops the frame.

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14
Q

Two network engineers are discussing the methods used to forward frames through a switch. What is an important concept related to the cut-through method of switching?

A

Packets can be relayed with errors when fast-forward switching is used.

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15
Q

Two network engineers are discussing the methods used to forward frames through a switch. What is an important concept related to the cut-through method of switching?

A

Packets can be relayed with errors when fast-forward switching is used.

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16
Q

Which two issues can cause both runts and giants in Ethernet networks? (Choose two.)

A

half-duplex operations
a malfunctioning NIC

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17
Q

Which two commands could be used to check if DNS name resolution is working properly on a Windows PC? (Choose two.)

A

nslookup cisco.com
ping cisco.com

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18
Q

A small advertising company has a web server that provides critical business service. The company connects to the Internet through a leased line service to an ISP. Which approach best provides cost effective redundancy for the Internet connection?

A

Add a connection to the Internet via a DSL line to another ISP.

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19
Q

Only employees connected to IPv6 interfaces are having difficulty connecting to remote networks. The analyst wants to verify that IPv6 routing has been enabled. What is the best command to use to accomplish the task?

A

show running-config

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20
Q

Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)

A

network
transport

21
Q

Which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model? (Choose three.)

A

presentation
application
session

22
Q

Network information:
local router LAN interface: 172.19.29.254 / fe80:65ab:dcc1::10 local router WAN interface: 198.133.219.33 / 2001:db8:FACE:39::10* remote server: 192.135.250.103
What task might a user be trying to accomplish by using the ping 2001:db8:FACE:39::10 command?

A

verifying that there is connectivity to the internet

23
Q

Which two ICMP messages are used by both IPv4 and IPv6 protocols? (Choose two.)​

A

protocol unreachable
route redirection

24
Q

A network technician types the command ping 127.0.0.1 at the command prompt on a computer. What is the technician trying to accomplish?

A

testing the integrity of the TCP/IP stack on the local machine

25
Q

Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary?

A

the use of full-duplex capable Layer 2 switches

26
Q

What does a router do when it receives a Layer 2 frame over the network medium?

A

de-encapsulates the frame

27
Q

Which two acronyms represent the data link sublayers that Ethernet relies upon to operate? (Choose two.)

A

LLC
MAC

28
Q

A network team is comparing topologies for connecting on a shared media. Which physical topology is an example of a hybrid topology for a LAN?

A

extended star

29
Q

Given network 172.18.109.0, which subnet mask would be used if 6 host bits were available?

A

255.255.255.192

30
Q

What type of address is 198.133.219.162?

A

public

31
Q

What does the IP address 192.168.1.15/29 represent?

A

broadcast address

32
Q

Why is NAT not needed in IPv6?​

A

Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

33
Q

What routing table entry has a next hop address associated with a destination network?

A

remote routes

34
Q

Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?

A

destination IPv4 address

35
Q

If the default gateway is configured incorrectly on the host, what is the impact on communications?

A

The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.

36
Q

Which is the compressed format of the IPv6 address fe80:0000:0000:0000:0220:0b3f:f0e0:0029?

A

fe80::220:b3f:f0e0:29

37
Q

Refer to the exhibit. A user issues the command netstat -r on a workstation. Which IPv6 address is one of the link-local addresses of the workstation?

A

fe80::30d0:115:3f57:fe4c/128

38
Q

What type of IPv6 address is represented by ::1/128?

A

Unicast Localhost address

39
Q

What characteristic describes spyware?

A

software that is installed on a user device and collects information about the user

40
Q

Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame?

A

The switch will forward the frame to all ports except port 4.

41
Q

Which destination address is used in an ARP request frame?

A

FFFF.FFFF.FFFF

42
Q

Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next?

A

RT1 will send an ARP reply with its own Fa0/0 MAC address.

43
Q

A network administrator is issuing the login block-for 180 attempts 2 within 30 command on a router. Which threat is the network administrator trying to prevent?

A

a user who is trying to guess a password to access the router

44
Q

Which statement describes the characteristics of packet-filtering and stateful firewalls as they relate to the OSI model?

A

A packet-filtering firewall typically can filter up to the transport layer, whereas a stateful firewall can filter up to the session layer.

45
Q

What are two ways to protect a computer from malware? (Choose two.)

A

Use antivirus software.
Keep software up to date.

46
Q

The employees and residents of Ciscoville cannot access the Internet or any remote web-based services. IT workers quickly determine that the city firewall is being flooded with so much traffic that a breakdown of connectivity to the Internet is occurring. Which type of attack is being launched at Ciscoville?

A

DoS

47
Q

Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)

A

Fiber-optic cabling does not conduct electricity.
Fiber-optic cabling is primarily used as backbone cabling.

48
Q

What OSI physical layer term describes the measure of the transfer of bits across a medium over a given period of time?

A

throughput

49
Q

Refer to the exhibit. What is the maximum possible throughput between the PC and the server?

A

128 kb/s

INTRODUCTION TO NETWORKING (1 decks)

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