Datakommunikation CCNA1 (1)

Question 1

What do we call the host that can help another host reach other networks?

Accepted Answer

The default gateway

Question 2

Encapsulation is the process of putting one message format inside another message format

Accepted Answer

True

Question 3

Match the application layer protocol (SMTP) to its Well-Known port number:

Accepted Answer

25

Question 4

A LAN span a large geographical area

Accepted Answer

False

Question 5

Which layer of the OSI model is concerned with the protocols that exchange data between programs running on hosts?

Accepted Answer

Application layer

Question 6

Why do we use the nslookup command?

Accepted Answer

Perform DNS queires

Question 7

What is true about encoding?

Accepted Answer

Converting the information (1 or 0) to an acceptable form for transmission, Differ depending on transmitting medium

Question 8

These contain malicious software or code running on a user device

Accepted Answer

Viruses and worms, Trojan horses

Question 9

Which prompt would indicate that the current mode is "User EXEC Mode"?

Accepted Answer

Router>

Question 10

What is true about a logical topology?

Accepted Answer

Visualize how the network is connected, Shows the flow of traffic, Shows devices, ports and addressing

Question 11

What is the long term solution for the depletion of IPv4 addresses?

Accepted Answer

IPv6 addresses

Question 12

Fiber optic cables:

Accepted Answer

Data is sent as pulses of light, Made of glass or plastic

Question 13

What is true about the Transport Layer?

Accepted Answer

Process-to process communication, Segments, transfers and reassembles data

Question 14

What is true about the Network Layer?

Accepted Answer

Host-to-Host communication

Question 15

What is true about the Data Link Layer?

Accepted Answer

Transfer between network elements, Node-to-Node communication

Question 16

What do we call the rules that describe how to accomplish communication?

Accepted Answer

Protocols

Question 17

The three letters in "CIA triad" stands for:

Accepted Answer

Confidentially/Available/Integrity

Question 18

What is true about intermediary devices?

Accepted Answer

Controls the flow of traffic through the network, Connects networks together, Connect end devices to a network

Question 19

What is true about formatting:

Accepted Answer

Agreed upon format

Question 20

What options are examples of softwares?

Accepted Answer

Firewalls, Web services, Routing services

Question 21

A collection of packet switches and links called networks provide communication services

Accepted Answer

True

Question 22

Match the application layer protocol (HTTPS) to its Well-Known port number:

Accepted Answer

443

Question 23

What is true about decoding?

Accepted Answer

The receiver decodes 1 and 0 into for example ASCII characters, The receiver converts (decodes) the signal back into 1 and 0

Question 24

What is true about a physical topology?

Accepted Answer

Visualize how the network is connected (like a map), Shows the physical location of devices and cables

Question 25

What is true about wireless media?

Accepted Answer

Data is sent over the electromagnetic spectrum

Question 26

Which network infrastructure provides access to other networks over a large geographical area?

Accepted Answer

WAN media

Question 27

What is a denial of service attack (DoS)?

Accepted Answer

Slows down or crash applications and processes on a network device

Question 28

What do we call a set of protocols working together to enable communication?

Accepted Answer

Protocol stack

Question 29

Why are the wire pairs twisted together in a UTP cable?

Accepted Answer

To protect the signal from interference

Question 30

Networks need to be?

Accepted Answer

Delivering reliable services (Qos), Fault tolerant (Redundancy), Scalable and secure

Question 31

What is true about the peer-to peer model?

Accepted Answer

No dedicated central server to provide services, Computers run both client and server software

Question 32

The data need to be segmented into?

Accepted Answer

Segments

Question 33

Zero-day attacks slow down or crash applications and processes on a network device

Accepted Answer

False

Question 34

Match the application layer protocol (HTTP) to its Well-Known port number:

Accepted Answer

80

Question 35

A LAN provides access to end users

Accepted Answer

True

Question 36

Match the application layer protocol (SSH) to its Well-Known port number:

Accepted Answer

22

Question 37

What is true about metallic wires?

Accepted Answer

Usually made of copper, Data is sent as electrical impulses

Question 38

The subnet mask identifies what?

Accepted Answer

The network and host part of an IP address

Question 39

Which command will block login attempts for a period of 60 sec if there are 3 failed login attempts within 20 sec?

Accepted Answer

login block-for 60 attempts 3 within 20

Question 40

A switch direct traffic between networks

Accepted Answer

False

Datakommunikation CCNA1 (1)

Questions 40

Datakommunikation CCNA1 (1)

Questions 40