Which two TCP header fields are used to confirm receipt of data? (Choose two.) FCS sequence number acknowledgment number preamble checksum Explanation: Together the TCP sequence number and acknowledgment number…
What does a client application select for a TCP or UDP source port number? a random value in the range of the registered ports a predefined value in the well-known…
What TCP mechanism is used to enhance performance by allowing a device to continuously send a steady stream of segments as long as the device is also receiving necessary acknowledgements?…
A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at…
A client is establishing a TCP session with a server. How is the acknowledgment number in the response segment to the client determined? The acknowledgment number field uses a random…
What is a socket? the combination of the source and destination sequence numbers and port numbers the combination of the source and destination sequence and acknowledgment numbers the combination of…
Refer to the exhibit. Host A and the file server have established a TCP session to exchange data. What acknowledgement number will the file server send to host A to…
Which two commands could be used to check if DNS name resolution is working properly on a Windows PC? (Choose two.) ipconfig /flushdns nbtstat cisco.com nslookup cisco.com net cisco.com ping…
A user reports that the corporate web server cannot be accessed. A technician verifies that the web server can be accessed by its IP address. What are two possible causes…
A DHCP configured PC boots up. What is the order of the messages that are sent and received by this PC in order to obtain an appropriate IP address? DHCPDISCOVER,…
What IPv4-related DNS record type is used by a DNS server in response to a host requesting for a web server address via the URL? MX record A record AAAA…
Which three statements describe a DHCP Discover message? (Choose three.) All hosts receive the message, but only a DHCP server replies. Only the DHCP server receives the message. The message…
Which two tasks can be performed by a local DNS server? (Choose two.) mapping name-to-IP addresses for internal hosts providing IP addresses to local hosts forwarding name resolution requests between…
Which DHCP IPv4 message contains the following information? Destination address: 255.255.255.255 Client IPv4 address: 0.0.0.0 Default gateway address: 0.0.0.0 Subnet mask: 0.0.0.0 DHCPREQUEST DHCPDISCOVER DHCPOFFER DHCPACK Explanation: A client will…
What is the protocol that is used to discover a physical address from a known logical address and what message type does it use? DNS, unicast PING, broadcast ARP, broadcast…
Refer to the exhibit. When PC1 wants to send a packet to PC3, the IP address of the device that will respond to the ARP request is 192.168.1.1 192.168.0.1 192.168.0.2…
What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.) A large number of ARP request and reply messages may…
Refer to the exhibit. What does R1 use as the MAC address of the destination when constructing the frame that will go from R1 to Server B? The packet is…
Refer to the exhibit. PC1 issues an ARP request because it needs to send a packet to PC3. In this scenario, what will happen next? RT1 will send an ARP…
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…