CCNA (200 - 301) Official Cert Guide Chapters 1 - 3 (2022)

What is SFP

What interfaces are SFP/SFP+ be used on?

What is multimode fiber?

What is single-mode fiber?

Why are fiber cables more secure than UTP?

What is a multicast address?

What is the MAC?

What is a broadcast address?

List 4 alternative names for the MAC address.

How many bytes in a MAC address?

How many bits are in a single hex digit?

How many bits in a byte?

How are MAC addresses unique?

What is half duplex logic?

What is full duplex logic?

Acronym 'CSMA/CD'

The CSMA/CD algorithm is used with LANs using what device?

Should ports connecting to a LAN hub use full duplex or half duplex logic?

Why is it important to understand CSMA/CD? Why not just use full duplex logic?

In simple terms, what does CSMA/CD do?

On a LAN using a hub, does everything have to use half duplex logic, or would it only be the ports directly connected to the hub?

On LANs using hubs, what are collisions?

What is meant by a hub flooding frames?

What are the advantages of hub ports using half duplex logic?

What are the limitations of half duplex logic ?

Name three application layer protocols.

Name the major protocol in the network layer.

What are the wired and wireless protocols used in the data link layer?

Name two transport layer protocols.

Explain how a webpage gets from a server to a browser in the application layer.

As a server responds to a request for a file, an OK message is also known as what?

A server sends over the first part of the requested file to a web browser. Do the other parts of the file sent over have HTTP headers?

Explain what TCP is and how it works.

How do sequence numbers work with TCP?

What is HTTP?

What is IP and how does it work?

Forwarding an IP packet is also known as...

What is the Ethernet protocol?

What is 802.11

What three layers on the OSI model are considered as the application layer on the TCP/IP model. List these layers from top to bottom.

What are the terminologies used when data is encapsulated at the transport, data link, and network layers

Why is the OSI model relevant?

What is a protocol data unit (PDU)?

An L2PDU is on what layer?

An L4PDU is on what layer?

What is the IEEE?

What is same layer interaction?

What is adjacent layer interaction?

What do switches do?

What do routers do?

What does a transceiver do?

What is a node?

What is meant by Ethernet?

Ethernet Frame. What does the preamble do?

Ethernet Frame. What does the start frame delimiter (SFD) do?

Ethernet Frame: What does the Type field contain?

Ethernet Frame. What does the data and padding field contain?

Data Link Layer Frames. What does the frame check sequence (FCS) field do?

How does the frame check sequence (FCS) work?

What is Ethernet shared media.

What is Ethernet point-to-point

What are UTP cables?

A UTP with two twisted wire pairs works up to what speeds?

A UTP cable with 4 twisted pairs works up to what speeds?

What are RJ-45s?

Ethernet Frame. What is the minimum and maximum bytes in the data and padding?

What is a crossover cable?

What makes a straight-through cable different from a crossover cable?

Why does pin logic matter?

What does auto-mdix do?

What is EMI?

What is crosstalk?

What does the term 'burned-in address' imply?

Where is half duplex logic used?

What is the cladding used for in fiber cables?

What is an encoding scheme?

What is 'IETF' and what do they do?

What is a telco?

What is the serial link on a router for?

How do serial links transmit data?

Were does a telco place their networking equipment?

How does a leased line reach customers?

What is a T1?

What are 5 other names for a leased line?

What data-link protocols are used by leased lines?

List 5 HDLC fields.

HDLC, what is the purpose of the flag field?

HDLC, what is the control field?

HDLC, what is the address field used for?

HDLC, what makes the Type field different?

Why is Ethernet better than leased lines?

Fiber links such as 1000BASE-ZX make Ethernet a viable WAN technology. What distance does this support?

What is a point of presence (PoP)?

What is EoMPLS

Name two common names (not including EoMPLS) used for an Ethernet WAN.

When transmitting frames over an Ethernet WAN, why does the destination MAC address change?

A host on a network is another name for what?

How do hosts choose where to send IP packets?

What is a routing table?

What is a subnet?

Create IPv4 addresses for two devices on the same subnet.

How many bytes are in an IPv4 header?

How many bits are in the destination and source address fields in the IPv4 header?

For a host to send packets to remote destination, what does it need to know about its own LAN?

What do routers need to know before they can forward packets?

What are routing protocols used for?

What is an internetwork?

What does the routing protocol enable routers to do?

What is a routing update?

What is DNS?

What is a DNS query?

What is a DNS reply?

What address is used when a router forwards a DNS message?

Does a DNS server know every domain name? Explain.

What is ARP?

Where do LAN devices store the MAC address of other devices?

What causes the reoccurrence of ARP requests?

What is an ARP request and how does it work?

What is an ARP reply message?

How would you look at the your computer's ARP cache?

What is the ping command?

An IP network is also known as a what?

What is a unicast IP address?

How is an ARP message broadcasted?

On LANs using hubs, what causes collisions?

What are fiber optic cables made of?

What runs along the length of a fiber cable?

What does a fiber optical transmitter do?

State the common name associated with 10Mbps

State the common name associated with 100Mbps

How fast is Gigabit Ethernet?

10Gbps is known by its common name as what?

State the formal IEEE name for 10BASE-T

State the formal IEEE name for 100BASE-T

State the formal IEEE name for 1000BASE-LX

State the formal IEEE name for 1000BASE-T

State the formal IEEE name for 10GBASE-T

1000BASE-LX supports a cable length of up to what?

A router is sending an IP packet to a device on a local subnet, what will the router lookup as it encapsulates the packet?

Ethernet Frame: How is the type field distinguished?

Besides encapsulation, what does a router do with an IP packet?