Practice test 1 - Networks + exam

Which netstat command option lists only current connections including IP addresses and port numbers ?

-n

Which netstat conmand option lists only current connections including IP addresses and port numbers?

-n

In the domain name www.apple.com, _______ is the top-level Domain (TLD).

.com

In a class full IPv4 address, the network ID always ends with an octet of ______.

0

The standard port for Telnet is 23 and the host IPv4 address is 10.43.3.87. What is the socket address?

10.43.3.87:23

What is the maximum number of hops a RIP packet can take?

15

What is the maximum frame size for Ethernet II frames used to manage VLAN traffic?

1522

What is the network ID for a network containing IP addresses ranging from 194.73.44.10 to 194.73.44.254? The network is not subnetted.

194.73.44.0

All routers can can interpret layer _______ and often layer _________ addressing. (Choose two)

4 and 3

Choose the protocol and port number used by the HTTPS service.

443, TCP

You send data to IP address (binary) 11111111 11111111 11111111 11111111 on an IPv4 network. Which device will receive the transmission?

All devices on your network segment

Which routing protocol is used on the internet's backbone?

BGP

An IP address containing a first octet in the range of 192-223 belongs to a Class ______ network.

C

SIP regulates _______ for VoIP and video- conferencing .

Call signaling and control

TCP ensures reliable data delivery through sequencing and ________.

Checksum

Which type of network provides security and centralized management?

Client-server

Earlier Ethernet frames were made large enough to fill the entire cable during the transmission to ensure any ________ were detected.

Collisions

Which protocol is used to transfer data quickly?

Connectionless

________ switches operate anywhere between Layer 4 and Layer 7.

Content

Traditional switches operate at the ______ layer of the OSI model.

Data Link

Network nodes use a ______ to send data to a computer on another network or the internet.

Default gateway

Which field in an IPv4 packet informs a router of the level of precedence that should be applied when processing an incoming packet?

Differentiated Services (DiffServ)

Which routing protocol allows routers to exchange information about Best paths with their neighboring routers?

Distance vector

When blocks in an IPv6 address contains all zeros, they can be written as _______

Double colon ::

Which routing method automatically calculates the best path between two networks?

Dynamic

Why would large busy networks most likely use dynamic routing?

Dynamic routing automatically calculates the best path between networks.

Which two routing protocols offer fast convergence time and can be used on core or edge routers?

EIGRP and OSPF

The ________ includes the local host name and the domain name.

FQDM

All protocols are routable .

False

DNS is a hierarchical centralized database system.

False

Latency occurs when a signal traveling on one wire infringes on the signal traveling over an adjacent wire.

False

Network functions are associated with only one layer of the OSI layer.

False

The Application layer includes software applications.

False

The application layer includes software applications.

False

________ is the process of gauging the appropriate rate of transmission based on how fast the recipient can accept data.

Flow control

Which device connects two dissimilar types of networks?

Gateway

Which fields are used by IPv4 and IPv6 respectively to limit the number of times a packet can be forwarded on a network. (Choose two).

Hop limit and TTL

Routers use IGMP to _______.

Identify nodes belonging to a specific multicast group.

Which statement accurately describes the OSI model?

It describes a theoretical representation of what happens between two nodes communicating on a network.

A network uses the RIP routing protocol. A packet has passed from one connectivity device to another 15 times. What will happen to the packet if it has not yet reached its destination?

It is discarded.

What happens if the TCP protocol does not receive an acknowledgment for data it has transmitted?

It will retransmit the data to the recipient.

A ________ allows for an MTU as high as 9198 bytes.

Jumbo frame

Which routing protocol enables routers to communicate beyond neighboring routers; after which, each router can independently map the entire network?

Link-state

Which Data Link sublayer manages access to the physical medium?

MAC

________ addresses are used to find nodes on local area networks only.

MAC

A ________ is a network connecting LANs in the same geographical area.

MAN

The ______ layer translates network addresses into their physical counterparts.

Network

Which OSI layer interprets routing information?

Network layer

Your network is connected to another network via a router. Which OSI layer provides the information required to direct data between the two networks?

Network layer

Which routing protocol provides a fast convergence time and is used on both core and edge routers?

OSPF

Which two routing protocols offer fast convergence time and can be used on core or edge routers?

OSPF and EIGRP

You send a transmission to the socket address 10.1.1.145:110 on your LAN. Which Application layer protocol are you using?

POP3

IPv4 addresses contain four decimal numbers separated by _________

Periods

The ______ layer generates signals as changes in voltage at the NIC.

Physical

Which OSI layer places the signal on the cable?

Physical

Which OSI layer generates and detects voltage to transmit and receive data signals?

Physical layer

Which utility is used to verify that TCP/IP is installed, bound to the NIC, configured correctly, and communicating with the network?

Ping

Which OSI layer handles compression?

Presentation

Which OSI layer manages data encryption?

Presentation

A ______ is a standard method or rule used for communication between networked devices.

Protocol

Select two routing metrics used by routers to determine the best path to a destination when various paths are available.

Reliability and latency

Select two routing metrics used by routers to determine the best path to a destination when various paths are available. (Choose two.)

Reliability and latency

A DNS client that requests information from a DNS name server is referred to as a ____________.

Resolver

A DNS client that requests information from a DNS server is referred to as ______.

Resolver

Protocols that can span more than one LAN (or LAN segment) are ________, because they carry Network layer addressing information that can be interpreted by a router.

Routable

A ________ is a Layer 3 device that uses logical addressing information to direct data between two or more networks.

Router

Which device separates broadcast domains?

Router

A ____ main function is to examine packets and determine where to direct them based on their Network layer addressing information.

Routers

A _________ main function is to examine packets and determine where to direct them based on their Network layer addressing information.

Routers

A _______ is a method used by routing protocols to determine the best path to a destination when various paths are available.

Routing metric

Router communicate with each other through ________.

Routing protocols

An administrator should take the time to troubleshoot all network problems correctly by asking specific questions designed to determine the problem ________

Scope

_______ is one of the most important aspects to consider when looking at how a solution to a problem might affect users and network functionality.

Scope

A _______ facilitates communication and resource sharing between computers on a network.

Server

Which OSI layer is responsible for keeping open a communications path between your computer and the server when you dial in to a remote access server?

Session layer

______ routing is a technique in which a network administrator configures a router to use specific paths between networks.

Static

What happens when a router receives a packet with a TTL of 0?

The router discards the packet and sends an ICMP TTL expired message back to the source host.

What is a routers convergence time?

The time it takes for a router to recognize a Best path in the event of a change or network outage.

The TCP ____ is performed before TCP transmits the actual data.

Three-way handshake

What is the function of ARP?

To obtain the MAC address of a node on the local network and map the MAC address to the nodes IP address

Select two command- line utilities used to troubleshoot and solve common routing problems.

Traceroute and pathping

Which OSI layer is responsible for issuing acknowledgments (ACKs)?

Transport layer

Not all Transport layer protocols are concerned with reliability.

True

On IPv4 networks, IGMP operates at the Network layer of the OSI model to manage multicast transmissions.

True

Segmentation is proffered for greater network efficiency.

True

Each network node has ______ types of addresses.

Two

Which situation requires the use of a connectionless Transport layer protocol?

When viewing a movie on the web

Which command is used to display a complete summary of configuration information on a Windows's computer?

ipconfig/all

The process of determining the best path from Point A on one network to Point B on another is known as ____.

routing