Module 5-10 Tech 171

When a wireless network in a small office is being set up, which type of IP addressing is typically used on the networked devices?

private

Which two parts are components of an IPv4 address? (Choose two.)

host portion, network portion

192.168.100.161/25

host address

203.0.113.100/24

host address

10.10.10.128/25

network address

172.110.12.64/28

network address

192.168.1.191/26

broadcast address

10.0.0.159/27

broadcast address

What is the full decompressed form of the IPv6 address 2001:420:59:0:1::a/64?

2001:0420:0059:0000:0001:0000:0000:000a

A cybersecurity analyst believes an attacker is spoofing the MAC address of the default gateway to perform a man-in-the-middle attack. Which command should the analyst use to view the MAC address a host is using to reach the default gateway?

arp -a

A user sends an HTTP request to a web server on a remote network. During encapsulation for this request, what information is added to the address field of a frame to indicate the destination?

the MAC address of the default gateway

What type of information is contained in an ARP table?

IP address to MAC address mappings

window size

TCP

3-way handshake

TCP

best for VoIP

UDP

connectionless

UDP

port number

UDP AND TCP

checksum

UDP AND TCP

What type of information is contained in a DNS MX record?

the domain name mapped to mail exchange servers

FTP

TCP

http

TCP

SMTP

TCP

DHCP

UDP

TFTP

UDP

A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC?

10 segments

A user issues a ping 192.168.250.103 command and receives a response that includes a code of 1 . What does this code represent?

host unreachable

Which two commands can be used on a Windows host to display the routing table? (Choose two.)

netstat -r, route print

A user issues a ping 2001:db8:FACE:39::10 command and receives a response that includes a code of 2 . What does this code represent?

protocol unreachable

What message informs IPv6 enabled interfaces to use stateful DHCPv6 for obtaining an IPv6 address?

the ICMPv6 Router Advertisement

What is the purpose of ICMP messages?

to provide feedback of IP packet transmissions

4xx

client error

3xx

redirection

sucess

2xx

informational

1xx

server error

5xx

What network service uses the WHOIS protocol?

DNS

What action does a DHCPv4 client take if it receives more than one DHCPOFFER from multiple DHCP servers?

It sends a DHCPREQUEST that identifies which lease offer the client is accepting.

Refer to the exhibit. From the perspective of users behind the NAT router, what type of NAT address is 209.165.201.1?

inside global

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

It is encapsulated in a Layer 2 frame.

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

segment

Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?

client/server

Which type of transmission is used to transmit a single video stream such as a web-based video conference to a select number of users?

multicast

Refer to the exhibit. PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. Which MAC address will PC1 receive in the ARP reply?

the MAC address of the G0/0 interface on R1

What is the result of an ARP poisoning attack?

Client information is stolen.

What is the function of the HTTP GET message?

to request an HTML page from a web server

Which protocol is a client/server file sharing protocol and also a request/response protocol?

SMB

How is a DHCPDISCOVER transmitted on a network to reach a DHCP server?

A DHCPDISCOVER message is sent with the broadcast IP address as the destination address.

What is a description of a DNS zone transfer?

transferring blocks of DNS data from a DNS server to another server

What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.)

64 bytes, 1518 bytes

Which process failed if a computer cannot access the internet and received an IP address of 169.254.142.5?

DHCP

Which statement describes a feature of the IP protocol?

IP relies on upper layer services to handle situations of missing or out-of-order packets.

What is a basic characteristic of the IP protocol?

connectionless

Which statement describes the ping and tracert commands?

Tracert shows each hop, while ping shows a destination reply only.

A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe?

bring your own device

Which method would an IPv6-enabled host using SLAAC employ to learn the address of the default gateway?

router advertisement messages received from the link router

A user issues a ping 192.168.250.103 command and receives a response that includes a code of 1. What does this code represent?

host unreachable

How does network scanning help assess operations security?

It can detect open TCP ports on network systems.

Which two operations are provided by TCP but not by UDP? (Choose two.)

retransmitting any unacknowledged data, acknowledging received data

A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the packet?

when the value in the TTL field reaches zero

A network administrator is testing network connectivity by issuing the ping command on a router. Which symbol will be displayed to indicate that a time expired during the wait for an ICMP echo reply message?

.

A technician is configuring email on a mobile device. The user wants to be able to keep the original email on the server, organize it into folders, and synchronize the folders between the mobile device and the server. Which email protocol should the technician use?

IMAP

At which OSI layer is a source MAC address added to a PDU during the encapsulation process?

data link layer

Which value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?

Time-to-Live

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

route redirection, protocol unreachable

What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.

A device has been assigned the IPv6 address of 2001:0db8:cafe:4500:1000:00d8:0058:00ab/64. Which is the host identifier of the device?

1000:00d8:0058:00ab

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

DHCP, FTP, DNS

A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

The computer has an invalid default gateway address.

A user who is unable to connect to the file server contacts the help desk. The helpdesk technician asks the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose for this ping command?

to test that the host has the capability to reach hosts on other networks

A user gets an IP address of 192.168.0.1 from the company network administrator. A friend of the user at a different company gets the same IP address on another PC. How can two PCs use the same IP address and still reach the Internet, send and receive email, and search the web?

ISPs use Network Address Translation to change a user IP address into an address that can be used on the Internet.

How many host addresses are available on the 192.168.10.128/26 network?

62

What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)

192.168.0.0/16, 172.16.0.0/12, 10.0.0.0/8

Refer to the exhibit. A cybersecurity analyst is viewing captured packets forwarded on switch S1. Which device has the MAC address 50:6a:03:96:71:22?

router DG

A host PC is attempting to lease an address through DHCP. What message is sent by the server to let the client know it is able to use the provided IP information?

DHCPACK

An employee complains that a Windows PC cannot connect to the Internet. A network technician issues the ipconfig command on the PC and is shown an IP address of 169.254.10.3. Which two conclusions can be drawn? (Choose two.)

The PC is configured to obtain an IP address automatically, The PC cannot contact a DHCP server.

What is a function of the tracert command that differs from the ping command when they are used on a workstation?

The tracert command shows the information of routers in the path.

Which two functions or operations are performed by the MAC sublayer? (Choose two.)

It is responsible for Media Access Control, It adds a header and trailer to form an OSI Layer 2 PDU.

Which field in an IPv4 packet header will typically stay the same during its transmission?

Destination Address

What are the two sizes (minimum and expected maximum) of an Ethernet frame? (Choose two.)

1518 bytes, 64 bytes