Module 5-10 Tech 171
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 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 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 are the two sizes (minimum and expected maximum) of an Ethernet frame? (Choose two.)
1518 bytes, 64 bytes
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
informational
1xx
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
sucess
2xx
server error
5xx
How many host addresses are available on the 192.168.10.128/26 network?
62
What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.)
64 bytes, 1518 bytes
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 the result of an ARP poisoning attack?
Client information is stolen.
Which process failed if a computer cannot access the internet and received an IP address of 169.254.142.5?
DHCP
What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)
DHCP, FTP, DNS
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
What network service uses the WHOIS protocol?
DNS
Which field in an IPv4 packet header will typically stay the same during its transmission?
Destination Address
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
What type of information is contained in an ARP table?
IP address to MAC address mappings
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.
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 does network scanning help assess operations security?
It can detect open TCP ports on network systems.
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.
What is done to an IP packet before it is transmitted over the physical medium?
It is encapsulated in a Layer 2 frame.
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.
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.
Which protocol is a client/server file sharing protocol and also a request/response protocol?
SMB
3-way handshake
TCP
FTP
TCP
SMTP
TCP
http
TCP
window size
TCP
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.
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.
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 value, that is contained in an IPv4 header field, is decremented by each router that receives a packet?
Time-to-Live
Which statement describes the ping and tracert commands?
Tracert shows each hop, while ping shows a destination reply only.
DHCP
UDP
TFTP
UDP
best for VoIP
UDP
connectionless
UDP
checksum
UDP AND TCP
port number
UDP AND TCP
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 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
10.0.0.159/27
broadcast address
192.168.1.191/26
broadcast address
4xx
client error
Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?
client/server
What is a basic characteristic of the IP protocol?
connectionless
At which OSI layer is a source MAC address added to a PDU during the encapsulation process?
data link layer
192.168.100.161/25
host address
203.0.113.100/24
host address
Which two parts are components of an IPv4 address? (Choose two.)
host portion, network portion
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
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
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
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
Which two commands can be used on a Windows host to display the routing table? (Choose two.)
netstat -r, route print
10.10.10.128/25
network address
172.110.12.64/28
network address
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
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
3xx
redirection
Which two operations are provided by TCP but not by UDP? (Choose two.)
retransmitting any unacknowledged data, acknowledging received data
Which two ICMP messages are used by both IPv4 and IPv6 protocols? (Choose two.)
route redirection, protocol unreachable
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
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
Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?
segment
What message informs IPv6 enabled interfaces to use stateful DHCPv6 for obtaining an IPv6 address?
the ICMPv6 Router Advertisement
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
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 a DNS MX record?
the domain name mapped to mail exchange servers
What is the purpose of ICMP messages?
to provide feedback of IP packet transmissions
What is the function of the HTTP GET message?
to request an HTML page from a web server
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
What is a description of a DNS zone transfer?
transferring blocks of DNS data from a DNS server to another server
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
